* Bédard et al. [2024] Bédard A., Blouin S., Cheng S. (2024): Buoyant crystals halt the cooling of white dwarf stars. Nature 627(8003):286–288. 10.1038/s41586-024-07102-y
  * Benvenuto & Althaus [1997] Benvenuto O. G., Althaus L. G. (1997): DB white dwarf evolution in the frame of the full spectrum turbulence theory. MNRAS 288(4):1004–1014. 10.1093/mnras/288.4.1004
  * Bergeron & Liebert [2002] Bergeron P., Liebert J. (2002): Spectroscopic Analysis of the DAB White Dwarf PG 1115+166: An Unresolved DA+DB Degenerate Binary. ApJ 566(2):1091–1094. 10.1086/338279, arXiv:astro-ph/0110549 [astro-ph]
  * Bergeron et al. [1992] Bergeron P., Saffer R. A., Liebert J. (1992): A Spectroscopic Determination of the Mass Distribution of DA White Dwarfs. ApJ 394:228. 10.1086/171575
  * Bergeron et al. [1993] Bergeron P., Wesemael F., Lamontagne R., et al. (1993): Metal-Line Blanketing and the Peculiar H beta Line Profile in the DAO Star Feige 55. ApJ 407:L85. 10.1086/186812
  * Bergeron et al. [1994] Bergeron P., Wesemael F., Beauchamp A., et al. (1994): A Spectroscopic Analysis of DAO and Hot DA White Dwarfs: The Implications of the Presence of Helium and the Nature of DAO Stars. ApJ 432:305. 10.1086/174571
  * Bergeron et al. [1997] Bergeron P., Ruiz M. T., Leggett S. K. (1997): The Chemical Evolution of Cool White Dwarfs and the Age of the Local Galactic Disk. ApJS 108(1):339–387. 10.1086/312955
  * Bergeron et al. [2001] Bergeron P., Leggett S. K., Ruiz M. T. (2001): Photometric and Spectroscopic Analysis of Cool White Dwarfs with Trigonometric Parallax Measurements. ApJS 133(2):413–449. 10.1086/320356, arXiv:astro-ph/0011286 [astro-ph]
  * Bergeron et al. [2011] Bergeron P., Wesemael F., Dufour P., et al. (2011): A Comprehensive Spectroscopic Analysis of DB White Dwarfs. ApJ 737(1):28. 10.1088/0004-637X/737/1/28, arXiv:1105.5433 [astro-ph.SR]
  * Bergeron et al. [2019] Bergeron P., Dufour P., Fontaine G., et al. (2019): On the Measurement of Fundamental Parameters of White Dwarfs in the Gaia Era. ApJ 876(1):67. 10.3847/1538-4357/ab153a, arXiv:1904.02022 [astro-ph.SR]
  * Bergeron et al. [2022] Bergeron P., Kilic M., Blouin S., et al. (2022): On the Nature of Ultracool White Dwarfs: Not so Cool after All. ApJ 934(1):36. 10.3847/1538-4357/ac76c7, arXiv:2206.03174 [astro-ph.SR]
  * Blöcker [2001] Blöcker T. (2001): Evolution on the AGB and beyond: on the formation of H-deficient post-AGB stars. Ap&SS 275:1–14. 10.1023/A:1002777931450, arXiv:astro-ph/0102135 [astro-ph]
  * Blouin [2022] Blouin S. (2022): Missing metals in DQ stars: A simple explanation. A&A 666:L7. 10.1051/0004-6361/202244944, arXiv:2209.11626 [astro-ph.SR]
  * Blouin & Dufour [2019] Blouin S., Dufour P. (2019): The evolution of carbon-polluted white dwarfs at low effective temperatures. MNRAS 490(3):4166–4174. 10.1093/mnras/stz2915, arXiv:1910.06168 [astro-ph.SR]
  * Blouin & Xu [2022] Blouin S., Xu S. (2022): No evidence for a strong decrease of planetesimal accretion in old white dwarfs. MNRAS 510(1):1059–1067. 10.1093/mnras/stab3446, arXiv:2111.12152 [astro-ph.SR]
  * Blouin et al. [2019a] Blouin S., Dufour P., Allard N. F., et al. (2019a): A New Generation of Cool White Dwarf Atmosphere Models. III. WD J2356-209: Accretion of a Planetesimal with an Unusual Composition. ApJ 872(2):188. 10.3847/1538-4357/ab0081, arXiv:1902.03219 [astro-ph.SR]
  * Blouin et al. [2019b] Blouin S., Dufour P., Thibeault C., et al. (2019b): A New Generation of Cool White Dwarf Atmosphere Models. IV. Revisiting the Spectral Evolution of Cool White Dwarfs. ApJ 878(1):63. 10.3847/1538-4357/ab1f82, arXiv:1905.02174 [astro-ph.SR]
  * Blouin et al. [2021] Blouin S., Daligault J., Saumon D. (2021): 22Ne Phase Separation as a Solution to the Ultramassive White Dwarf Cooling Anomaly. ApJ 911(1):L5. 10.3847/2041-8213/abf14b, arXiv:2103.12892 [astro-ph.SR]
  * Blouin et al. [2023a] Blouin S., Bédard A., Tremblay P.-E. (2023a): Carbon dredge-up required to explain the Gaia white dwarf colour-magnitude bifurcation. MNRAS 523(3):3363–3375. 10.1093/mnras/stad1574, arXiv:2305.02827 [astro-ph.SR]
  * Blouin et al. [2023b] Blouin S., Kilic M., Bédard A., et al. (2023b): The ubiquity of carbon dredge-up in hydrogen-deficient white dwarfs as revealed by GALEX. MNRAS 525(1):L112–L116. 10.1093/mnrasl/slad105, arXiv:2307.14295 [astro-ph.SR]
  * Bonsor et al. [2020] Bonsor A., Carter P. J., Hollands M., et al. (2020): Are exoplanetesimals differentiated? MNRAS 492(2):2683–2697. 10.1093/mnras/stz3603, arXiv:2001.04499 [astro-ph.EP]
  * Brassard et al. [2007] Brassard P., Fontaine G., Dufour P., et al. (2007): The Origin and Evolution of DQ White Dwarfs: The Carbon Pollution Problem Revisited. In: Napiwotzki R., Burleigh M. R. (eds.) ASP Conf. Ser. 372: 15th European Workshop on White Dwarfs. San Francisco: Astronomical Society of the Pacific, p. 19
  * Buchan et al. [2022] Buchan A. M., Bonsor A., Shorttle O., et al. (2022): Planets or asteroids? A geochemical method to constrain the masses of White Dwarf pollutants. MNRAS 510(3):3512–3530. 10.1093/mnras/stab3624, arXiv:2111.08779 [astro-ph.EP]
  * Caiazzo et al. [2023] Caiazzo I., Burdge K. B., Tremblay P.-E., et al. (2023): A rotating white dwarf shows different compositions on its opposite faces. Nature 620(7972):61–66. 10.1038/s41586-023-06171-9, arXiv:2308.07430 [astro-ph.SR]
  * Camisassa et al. [2023] Camisassa M., Torres S., Hollands M., et al. (2023): A hidden population of white dwarfs with atmospheric carbon traces in the Gaia bifurcation. A&A 674:A213. 10.1051/0004-6361/202346628, arXiv:2305.02110 [astro-ph.SR]
  * Camisassa et al. [2016] Camisassa M. E., Althaus L. G., Córsico A. H., et al. (2016): The Effect of 22NE Diffusion in the Evolution and Pulsational Properties of White Dwarfs with Solar Metallicity Progenitors. ApJ 823(2):158. 10.3847/0004-637X/823/2/158, arXiv:1604.01744 [astro-ph.SR]
  * Camisassa et al. [2017] Camisassa M. E., Althaus L. G., Rohrmann R. D., et al. (2017): Updated Evolutionary Sequences for Hydrogen-deficient White Dwarfs. ApJ 839(1):11. 10.3847/1538-4357/aa6797, arXiv:1703.05340 [astro-ph.SR]
  * Caron et al. [2023] Caron A., Bergeron P., Blouin S., et al. (2023): A spectrophotometric analysis of cool white dwarfs in the Gaia and pan-STARRS footprint. MNRAS 519(3):4529–4549. 10.1093/mnras/stac3733, arXiv:2212.08014 [astro-ph.SR]
  * Cenarro et al. [2019] Cenarro A. J., Moles M., Cristóbal-Hornillos D., et al. (2019): J-PLUS: The Javalambre Photometric Local Universe Survey. A&A 622:A176. 10.1051/0004-6361/201833036, arXiv:1804.02667 [astro-ph.GA]
  * Chambers et al. [2016] Chambers K. C., Magnier E. A., Metcalfe N., et al. (2016): The Pan-STARRS1 Surveys. arXiv e-prints arXiv:1612.05560. 10.48550/arXiv.1612.05560, arXiv:1612.05560 [astro-ph.IM]
  * Chayer [2014] Chayer P. (2014): Radiative levitation of silicon in the atmospheres of two Hyades DA white dwarfs. MNRAS 437(1):L95–L99. 10.1093/mnrasl/slt149, arXiv:1310.6245 [astro-ph.SR]
  * Chayer et al. [1995a] Chayer P., Fontaine G., Wesemael F. (1995a): Radiative Levitation in Hot White Dwarfs: Equilibrium Theory. ApJS 99:189. 10.1086/192184
  * Chayer et al. [1995b] Chayer P., Vennes S., Pradhan A. K., et al. (1995b): Improved Calculations of the Equilibrium Abundances of Heavy Elements Supported by Radiative Levitation in the Atmospheres of Hot DA White Dwarfs. ApJ 454:429. 10.1086/176494
  * Chayer et al. [2005] Chayer P., Vennes S., Dupuis J., et al. (2005): Abundance of Elements beyond the Iron Group in Cool DO White Dwarfs. ApJ 630(2):L169–L172. 10.1086/491699
  * Chayer et al. [2023] Chayer P., Mendoza C., Meléndez M., et al. (2023): Detection of cesium in the atmosphere of the hot He-rich white dwarf HD 149499B. MNRAS 518(1):368–381. 10.1093/mnras/stac3138, arXiv:2211.01868 [astro-ph.SR]
  * Chen & Hansen [2011] Chen E. Y., Hansen B. M. S. (2011): Cooling curves and chemical evolution curves of convective mixing white dwarf stars. MNRAS 413(4):2827–2837. 10.1111/j.1365-2966.2011.18355.x
  * Chen & Hansen [2012] Chen E. Y., Hansen B. M. S. (2012): The Spectral Evolution of Convective Mixing White Dwarfs, the Non-DA Gap, and White Dwarf Cosmochronology. ApJ 753(1):L16. 10.1088/2041-8205/753/1/L16, arXiv:1205.7068 [astro-ph.SR]
  * Chen et al. [2021] Chen J., Ferraro F. R., Cadelano M., et al. (2021): Slowly cooling white dwarfs in M13 from stable hydrogen burning. Nature Astronomy 5:1170–1177. 10.1038/s41550-021-01445-6, arXiv:2109.02306 [astro-ph.GA]
  * Cheng et al. [2019] Cheng S., Cummings J. D., Ménard B. (2019): A Cooling Anomaly of High-mass White Dwarfs. ApJ 886(2):100. 10.3847/1538-4357/ab4989, arXiv:1905.12710 [astro-ph.SR]
  * Coutu et al. [2019] Coutu S., Dufour P., Bergeron P., et al. (2019): Analysis of Helium-rich White Dwarfs Polluted by Heavy Elements in the Gaia Era. ApJ 885(1):74. 10.3847/1538-4357/ab46b9, arXiv:1907.05932 [astro-ph.SR]
  * Cukanovaite et al. [2018] Cukanovaite E., Tremblay P. E., Freytag B., et al. (2018): Pure-helium 3D model atmospheres of white dwarfs. MNRAS 481(2):1522–1537. 10.1093/mnras/sty2383, arXiv:1809.00590 [astro-ph.SR]
  * Cukanovaite et al. [2019] Cukanovaite E., Tremblay P. E., Freytag B., et al. (2019): Calibration of the mixing-length theory for structures of helium-dominated atmosphere white dwarfs. MNRAS 490(1):1010–1025. 10.1093/mnras/stz2656, arXiv:1909.10532 [astro-ph.SR]
  * Cukanovaite et al. [2021] Cukanovaite E., Tremblay P.-E., Bergeron P., et al. (2021): 3D spectroscopic analysis of helium-line white dwarfs. MNRAS 501(4):5274–5293. 10.1093/mnras/staa3684, arXiv:2011.12693 [astro-ph.SR]
  * Cukanovaite et al. [2023] Cukanovaite E., Tremblay P. E., Toonen S., et al. (2023): Local stellar formation history from the 40 pc white dwarf sample. MNRAS 522(2):1643–1661. 10.1093/mnras/stad1020, arXiv:2209.13919 [astro-ph.SR]
  * Cummings et al. [2018] Cummings J. D., Kalirai J. S., Tremblay P. E., et al. (2018): The White Dwarf Initial-Final Mass Relation for Progenitor Stars from 0.85 to 7.5 M ⊙. ApJ 866(1):21. 10.3847/1538-4357/aadfd6, arXiv:1809.01673 [astro-ph.SR]
  * Cunningham et al. [2019] Cunningham T., Tremblay P.-E., Freytag B., et al. (2019): Convective overshoot and macroscopic diffusion in pure-hydrogen-atmosphere white dwarfs. MNRAS 488(2):2503–2522. 10.1093/mnras/stz1759, arXiv:1906.11252 [astro-ph.SR]
  * Cunningham et al. [2020] Cunningham T., Tremblay P.-E., Gentile Fusillo N. P., et al. (2020): From hydrogen to helium: the spectral evolution of white dwarfs as evidence for convective mixing. MNRAS 492(3):3540–3552. 10.1093/mnras/stz3638, arXiv:1911.00014 [astro-ph.SR]
  * Dalton et al. [2012] Dalton G., Trager S. C., Abrams D. C., et al. (2012): WEAVE: the next generation wide-field spectroscopy facility for the William Herschel Telescope. In: McLean I. S., Ramsay S. K., Takami H. (eds.) Ground-based and Airborne Instrumentation for Astronomy IV, vol. 8446. Society of Photo-Optical Instrumentation Engineers, p. 84460P
  * D’Antona & Mazzitelli [1989] D’Antona F., Mazzitelli I. (1989): The Fastest Evolving White Dwarfs. ApJ 347:934. 10.1086/168185
  * de Jong et al. [2014] de Jong R. S., Barden S., Bellido-Tirado O., et al. (2014): 4MOST: 4-metre Multi-Object Spectroscopic Telescope. In: Ramsay S. K., McLean I. S., Takami H. (eds.) Ground-based and Airborne Instrumentation for Astronomy V, vol. 9147. Society of Photo-Optical Instrumentation Engineers, p. 91470M
  * Deal et al. [2013] Deal M., Deheuvels S., Vauclair G., et al. (2013): Accretion from debris disks onto white dwarfs. Fingering (thermohaline) instability and derived accretion rates. A&A 557:L12. 10.1051/0004-6361/201322206, arXiv:1308.5406 [astro-ph.SR]
  * Debes & Sigurdsson [2002] Debes J. H., Sigurdsson S. (2002): Are There Unstable Planetary Systems around White Dwarfs? ApJ 572(1):556–565. 10.1086/340291, arXiv:astro-ph/0202273 [astro-ph]
  * Dehner & Kawaler [1995] Dehner B. T., Kawaler S. D. (1995): Thick to Thin: The Evolutionary Connection between PG 1159 Stars and the Thin Helium–enveloped Pulsating White Dwarf GD 358. ApJ 445:L141. 10.1086/187909, arXiv:astro-ph/9503099 [astro-ph]
  * DESI Collaboration et al. [2016] DESI Collaboration, Aghamousa A., Aguilar J., et al. (2016): The DESI Experiment Part I: Science,Targeting, and Survey Design. arXiv e-prints arXiv:1611.00036. arXiv:1611.00036 [astro-ph.IM]
  * Doyle et al. [2023] Doyle A. E., Klein B. L., Dufour P., et al. (2023): New Chondritic Bodies Identified in Eight Oxygen-bearing White Dwarfs. ApJ 950(2):93. 10.3847/1538-4357/acbd44, arXiv:2303.00063 [astro-ph.SR]
  * Dreizler [1999] Dreizler S. (1999): Hubble Space Telescope spectroscopy of hot helium-rich white dwarfs: metal abundances along the cooling sequence. A&A 352:632–644
  * Dreizler & Heber [1998] Dreizler S., Heber U. (1998): Spectral analyses of PG 1159 star: constraints on the GW Virginis pulsations from HST observations. A&A 334:618–632
  * Dreizler & Werner [1996] Dreizler S., Werner K. (1996): Spectral analysis of hot helium-rich white dwarfs. A&A 314:217–232
  * Dreizler & Wolff [1999] Dreizler S., Wolff B. (1999): Analysis of ultraviolet and extreme-ultraviolet spectra of the DA white dwarf G 191-B2B using self-consistent diffusion models. A&A 348:189–197
  * Dufour [2011] Dufour P. (2011): Stars with Unusual Compositions: Carbon and Oxygen in Cool White Dwarfs. In: Hoard D. W. (ed.) White Dwarf Atmospheres and Circumstellar Environments. New York: Wiley, p. 53–88
  * Dufour et al. [2005] Dufour P., Bergeron P., Fontaine G. (2005): Detailed Spectroscopic and Photometric Analysis of DQ White Dwarfs. ApJ 627(1):404–417. 10.1086/430373, arXiv:astro-ph/0503112 [astro-ph]
  * Dufour et al. [2007a] Dufour P., Bergeron P., Liebert J., et al. (2007a): On the Spectral Evolution of Cool, Helium-Atmosphere White Dwarfs: Detailed Spectroscopic and Photometric Analysis of DZ Stars. ApJ 663(2):1291–1308. 10.1086/518468, arXiv:astro-ph/0703758 [astro-ph]
  * Dufour et al. [2007b] Dufour P., Liebert J., Fontaine G., et al. (2007b): White dwarf stars with carbon atmospheres. Nature 450(7169):522–524. 10.1038/nature06318, arXiv:0711.3227 [astro-ph]
  * Dufour et al. [2008] Dufour P., Fontaine G., Liebert J., et al. (2008): Hot DQ White Dwarfs: Something Different. ApJ 683(2):978–989. 10.1086/589855, arXiv:0805.0331 [astro-ph]
  * Dufour et al. [2010a] Dufour P., Desharnais S., Wesemael F., et al. (2010a): Multiwavelength Observations of the Hot DB Star PG 0112+104. ApJ 718(2):647–656. 10.1088/0004-637X/718/2/647, arXiv:1006.0365 [astro-ph.SR]
  * Dufour et al. [2010b] Dufour P., Kilic M., Fontaine G., et al. (2010b): The Discovery of the Most Metal-rich White Dwarf: Composition of a Tidally Disrupted Extrasolar Dwarf Planet. ApJ 719(1):803–809. 10.1088/0004-637X/719/1/803, arXiv:1006.3710 [astro-ph.SR]
  * Dufour et al. [2012] Dufour P., Kilic M., Fontaine G., et al. (2012): Detailed Compositional Analysis of the Heavily Polluted DBZ White Dwarf SDSS J073842.56+183509.06: A Window on Planet Formation? ApJ 749(1):6. 10.1088/0004-637X/749/1/6, arXiv:1201.6252 [astro-ph.SR]
  * Dufour et al. [2013] Dufour P., Vornanen T., Bergeron P., et al. (2013): White Dwarfs with Carbon Dominated Atmosphere: New Observations and Analysis. In: Krzesiński J., Stachowski G., Moskalik P., et al. (eds.) ASP Conf. Ser. 469: 18th European White Dwarf Workshop. San Francisco: Astronomical Society of the Pacific, p. 167
  * Dufour et al. [2017] Dufour P., Blouin S., Coutu S., et al. (2017): The Montreal White Dwarf Database: A Tool for the Community. In: Tremblay P. E., Gänsicke B., Marsh T. (eds.) ASP Conf. Ser. 509: 20th European Workshop on White Dwarfs. San Francisco: Astronomical Society of the Pacific, p. 3, 1610.00986
  * Dunlap & Clemens [2015] Dunlap B. H., Clemens J. C. (2015): Hot DQ White Dwarf Stars as Failed Type Ia Supernovae. In: Dufour P., Bergeron P., Fontaine G. (eds.) ASP Conf. Ser. 493: 19th European Workshop on White Dwarfs. San Francisco: Astronomical Society of the Pacific, p. 547
  * Dupuis et al. [1992] Dupuis J., Fontaine G., Pelletier C., et al. (1992): A Study of Metal Abundance Patterns in Cool White Dwarfs. I. Time-dependent Calculations of Gravitational Settling. ApJS 82:505. 10.1086/191728
  * Dupuis et al. [1993a] Dupuis J., Fontaine G., Pelletier C., et al. (1993a): A Study of Metal Abundance Patterns in Cool White Dwarfs. II. Simulations of Accretion Episodes. ApJS 84:73. 10.1086/191746
  * Dupuis et al. [1993b] Dupuis J., Fontaine G., Wesemael F. (1993b): A Study of Metal Abundance Patterns in Cool White Dwarfs. III. Comparison of the Predictions of the Two-Phase Accretion Model with the Observations. ApJS 87:345. 10.1086/191808
  * Dwomoh & Bauer [2023] Dwomoh A. M., Bauer E. B. (2023): Reinterpreting the Polluted White Dwarf SDSS J122859.93+104032.9 in Light of Thermohaline Mixing Models: More Polluting Material from a Larger Orbiting Solid Body. ApJ 952(2):95. 10.3847/1538-4357/acdb69, arXiv:2306.03864 [astro-ph.SR]
  * Eisenstein et al. [2006] Eisenstein D. J., Liebert J., Koester D., et al. (2006): Hot DB White Dwarfs from the Sloan Digital Sky Survey. AJ 132(2):676–691. 10.1086/504424, arXiv:astro-ph/0606702 [astro-ph]
  * El-Badry et al. [2018] El-Badry K., Rix H.-W., Weisz D. R. (2018): An Empirical Measurement of the Initial-Final Mass Relation with Gaia White Dwarfs. ApJ 860(2):L17. 10.3847/2041-8213/aaca9c, arXiv:1805.05849 [astro-ph.SR]
  * Elms et al. [2022] Elms A. K., Tremblay P.-E., Gänsicke B. T., et al. (2022): Spectral analysis of ultra-cool white dwarfs polluted by planetary debris. MNRAS 517(3):4557–4574. 10.1093/mnras/stac2908, arXiv:2206.05258 [astro-ph.SR]
  * Fantin et al. [2019] Fantin N. J., Côté P., McConnachie A. W., et al. (2019): The Canada-France Imaging Survey: Reconstructing the Milky Way Star Formation History from Its White Dwarf Population. ApJ 887(2):148. 10.3847/1538-4357/ab5521, arXiv:1911.02576 [astro-ph.GA]
  * Farihi [2016] Farihi J. (2016): Circumstellar debris and pollution at white dwarf stars. New A Rev. 71:9–34. 10.1016/j.newar.2016.03.001, arXiv:1604.03092 [astro-ph.EP]
  * Farihi et al. [2010] Farihi J., Barstow M. A., Redfield S., et al. (2010): Rocky planetesimals as the origin of metals in DZ stars. MNRAS 404(4):2123–2135. 10.1111/j.1365-2966.2010.16426.x, arXiv:1001.5025 [astro-ph.EP]
  * Farihi et al. [2011] Farihi J., Brinkworth C. S., Gänsicke B. T., et al. (2011): Possible Signs of Water and Differentiation in a Rocky Exoplanetary Body. ApJ 728(1):L8. 10.1088/2041-8205/728/1/L8, arXiv:1101.0158 [astro-ph.EP]
  * Farihi et al. [2013] Farihi J., Gänsicke B. T., Koester D. (2013): Evidence for Water in the Rocky Debris of a Disrupted Extrasolar Minor Planet. Science 342(6155):218–220. 10.1126/science.1239447, arXiv:1310.3269 [astro-ph.EP]
  * Farihi et al. [2016] Farihi J., Koester D., Zuckerman B., et al. (2016): Solar abundances of rock-forming elements, extreme oxygen and hydrogen in a young polluted white dwarf. MNRAS 463(3):3186–3192. 10.1093/mnras/stw2182, arXiv:1608.07278 [astro-ph.EP]
  * Farihi et al. [2022] Farihi J., Dufour P., Wilson T. G. (2022): Missing Metals in DQ Stars; a Compelling Clue to their Origin. arXiv e-prints arXiv:2208.05990. 10.48550/arXiv.2208.05990, arXiv:2208.05990 [astro-ph.SR]
  * Finley et al. [1997] Finley D. S., Koester D., Basri G. (1997): The Temperature Scale and Mass Distribution of Hot DA White Dwarfs. ApJ 488(1):375–396. 10.1086/304668
  * Fleming et al. [1986] Fleming T. A., Liebert J., Green R. F. (1986): The Luminosity Function of DA White Dwarfs. ApJ 308:176. 10.1086/164488
  * Fontaine & Brassard [2002] Fontaine G., Brassard P. (2002): Can White Dwarf Asteroseismology Really Constrain the 12C($\alpha$, $\gamma$)16O Reaction Rate? ApJ 581(1):L33–L37. 10.1086/345787
  * Fontaine & Brassard [2005] Fontaine G., Brassard P. (2005): Carbon in Hot DB White Dwarfs: A New Challenge for the Theory of the Spectral Evolution of White Dwarfs. In: Koester D., Moehler S. (eds.) ASP Conf. Ser. 334: 14th European Workshop on White Dwarfs. San Francisco: Astronomical Society of the Pacific, p. 49
  * Fontaine & Michaud [1979] Fontaine G., Michaud G. (1979): Diffusion time scales in white dwarfs. ApJ 231:826–840. 10.1086/157247
  * Fontaine & van Horn [1976] Fontaine G., van Horn H. M. (1976): Convective white-dwarf envelope model grids for H-, He-, and C-rich compositions. ApJS 31:467–487. 10.1086/190388
  * Fontaine & Wesemael [1987] Fontaine G., Wesemael F. (1987): Recent advances in the theory of white dwarf spectral evolution. In: Philip A. G. D., Hayes D. S., Liebert J. W. (eds.) IAU Colloq. 95: Second Conference on Faint Blue Stars. Schenectady: Davis Press, pp. 319–326
  * Fontaine et al. [1984] Fontaine G., Villeneuve B., Wesemael F., et al. (1984): Carbon in the cool DC and C2 white dwarfs - Dredge-up in compositionally stratified envelopes. ApJ 277:L61–L64. 10.1086/184203
  * Fontaine et al. [2001] Fontaine G., Brassard P., Bergeron P. (2001): The Potential of White Dwarf Cosmochronology. PASP 113(782):409–435. 10.1086/319535
  * Fortin-Archambault et al. [2020] Fortin-Archambault M., Dufour P., Xu S. (2020): Modeling of the Variable Circumstellar Absorption Features of WD 1145+017. ApJ 888(1):47. 10.3847/1538-4357/ab585a, arXiv:1911.05690 [astro-ph.SR]
  * Gaia Collaboration et al. [2016] Gaia Collaboration, Prusti T., de Bruijne J. H. J., et al. (2016): The Gaia mission. A&A 595:A1. 10.1051/0004-6361/201629272, arXiv:1609.04153 [astro-ph.IM]
  * Gaia Collaboration et al. [2018a] Gaia Collaboration, Babusiaux C., van Leeuwen F., et al. (2018a): Gaia Data Release 2. Observational Hertzsprung-Russell diagrams. A&A 616:A10. 10.1051/0004-6361/201832843, arXiv:1804.09378 [astro-ph.SR]
  * Gaia Collaboration et al. [2018b] Gaia Collaboration, Brown A. G. A., Vallenari A., et al. (2018b): Gaia Data Release 2. Summary of the contents and survey properties. A&A 616:A1. 10.1051/0004-6361/201833051, arXiv:1804.09365 [astro-ph.GA]
  * Gaia Collaboration et al. [2021] Gaia Collaboration, Brown A. G. A., Vallenari A., et al. (2021): Gaia Early Data Release 3. Summary of the contents and survey properties. A&A 649:A1. 10.1051/0004-6361/202039657, arXiv:2012.01533 [astro-ph.GA]
  * Gaia Collaboration et al. [2023a] Gaia Collaboration, Montegriffo P., Bellazzini M., et al. (2023a): Gaia Data Release 3. The Galaxy in your preferred colours: Synthetic photometry from Gaia low-resolution spectra. A&A 674:A33. 10.1051/0004-6361/202243709, arXiv:2206.06215 [astro-ph.SR]
  * Gaia Collaboration et al. [2023b] Gaia Collaboration, Vallenari A., Brown A. G. A., et al. (2023b): Gaia Data Release 3. Summary of the content and survey properties. A&A 674:A1. 10.1051/0004-6361/202243940, arXiv:2208.00211 [astro-ph.GA]
  * Gänsicke et al. [2012] Gänsicke B. T., Koester D., Farihi J., et al. (2012): The chemical diversity of exo-terrestrial planetary debris around white dwarfs. MNRAS 424(1):333–347. 10.1111/j.1365-2966.2012.21201.x, arXiv:1205.0167 [astro-ph.EP]
  * García-Berro et al. [2010] García-Berro E., Torres S., Althaus L. G., et al. (2010): A white dwarf cooling age of 8Gyr for NGC 6791 from physical separation processes. Nature 465(7295):194–196. 10.1038/nature09045, arXiv:1005.2272 [astro-ph.SR]
  * García-Zamora et al. [2023] García-Zamora E. M., Torres S., Rebassa-Mansergas A. (2023): White dwarf Random Forest classification through Gaia spectral coefficients. A&A 679:A127. 10.1051/0004-6361/202347601, arXiv:2308.07090 [astro-ph.SR]
  * Genest-Beaulieu & Bergeron [2019a] Genest-Beaulieu C., Bergeron P. (2019a): A Comprehensive Spectroscopic and Photometric Analysis of DA and DB White Dwarfs from SDSS and Gaia. ApJ 871(2):169. 10.3847/1538-4357/aafac6
  * Genest-Beaulieu & Bergeron [2019b] Genest-Beaulieu C., Bergeron P. (2019b): A Photometric and Spectroscopic Investigation of the DB White Dwarf Population Using SDSS and Gaia Data. ApJ 882(2):106. 10.3847/1538-4357/ab379e, arXiv:1908.01728 [astro-ph.SR]
  * Gentile Fusillo et al. [2017] Gentile Fusillo N. P., Gänsicke B. T., Farihi J., et al. (2017): Trace hydrogen in helium atmosphere white dwarfs as a possible signature of water accretion. MNRAS 468(1):971–980. 10.1093/mnras/stx468, arXiv:1702.06542 [astro-ph.SR]
  * Gentile Fusillo et al. [2019] Gentile Fusillo N. P., Tremblay P.-E., Gänsicke B. T., et al. (2019): A Gaia Data Release 2 catalogue of white dwarfs and a comparison with SDSS. MNRAS 482(4):4570–4591. 10.1093/mnras/sty3016, arXiv:1807.03315 [astro-ph.SR]
  * Gentile Fusillo et al. [2020] Gentile Fusillo N. P., Tremblay P.-E., Bohlin R. C., et al. (2020): Cool white dwarfs as standards for infrared observations. MNRAS 491(3):3613–3623. 10.1093/mnras/stz2984, arXiv:1910.08087 [astro-ph.SR]
  * Gentile Fusillo et al. [2021] Gentile Fusillo N. P., Tremblay P. E., Cukanovaite E., et al. (2021): A catalogue of white dwarfs in Gaia EDR3. MNRAS 508(3):3877–3896. 10.1093/mnras/stab2672, arXiv:2106.07669 [astro-ph.SR]
  * Giammichele et al. [2012] Giammichele N., Bergeron P., Dufour P. (2012): Know Your Neighborhood: A Detailed Model Atmosphere Analysis of Nearby White Dwarfs. ApJS 199(2):29. 10.1088/0067-0049/199/2/29, arXiv:1202.5581 [astro-ph.SR]
  * Gianninas et al. [2010] Gianninas A., Bergeron P., Dupuis J., et al. (2010): Spectroscopic Analysis of Hot, Hydrogen-rich White Dwarfs: The Presence of Metals and the Balmer-line Problem. ApJ 720(1):581–602. 10.1088/0004-637X/720/1/581
  * Gianninas et al. [2011] Gianninas A., Bergeron P., Ruiz M. T. (2011): A Spectroscopic Survey and Analysis of Bright, Hydrogen-rich White Dwarfs. ApJ 743(2):138. 10.1088/0004-637X/743/2/138, arXiv:1109.3171 [astro-ph.SR]
  * Good et al. [2004] Good S. A., Barstow M. A., Holberg J. B., et al. (2004): Comparison of the effective temperatures, gravities and helium abundances of DAO white dwarfs from Balmer and Lyman line studies. MNRAS 355(3):1031–1040. 10.1111/j.1365-2966.2004.08406.x
  * Good et al. [2005] Good S. A., Barstow M. A., Burleigh M. R., et al. (2005): Heavy element abundances in DAO white dwarfs measured from FUSE data. MNRAS 363(1):183–196. 10.1111/j.1365-2966.2005.09428.x, arXiv:astro-ph/0507341 [astro-ph]
  * Greenstein [1986] Greenstein J. L. (1986): The Frequency of Hydrogen White Dwarfs as Observed at High Signal to Noise. ApJ 304:334. 10.1086/164168
  * Hansen et al. [2007] Hansen B. M. S., Anderson J., Brewer J., et al. (2007): The White Dwarf Cooling Sequence of NGC 6397. ApJ 671(1):380–401. 10.1086/522567, arXiv:astro-ph/0701738 [astro-ph]
  * Harrison et al. [2018] Harrison J. H. D., Bonsor A., Madhusudhan N. (2018): Polluted white dwarfs: constraints on the origin and geology of exoplanetary material. MNRAS 479(3):3814–3841. 10.1093/mnras/sty1700, arXiv:1806.09917 [astro-ph.EP]
  * Harrison et al. [2021] Harrison J. H. D., Bonsor A., Kama M., et al. (2021): Bayesian constraints on the origin and geology of exoplanetary material using a population of externally polluted white dwarfs. MNRAS 504(2):2853–2867. 10.1093/mnras/stab736, arXiv:2103.05713 [astro-ph.EP]
  * Heber et al. [1997] Heber U., Napiwotzki R., Lemke M., et al. (1997): Helium line profile variations in the DAB white dwarf HS 0209+0832. A&A 324:L53–L56
  * Heinonen et al. [2020] Heinonen R. A., Saumon D., Daligault J., et al. (2020): Diffusion Coefficients in the Envelopes of White Dwarfs. ApJ 896(1):2. 10.3847/1538-4357/ab91ad, arXiv:2005.05891 [astro-ph.SR]
  * Heintz et al. [2022] Heintz T. M., Hermes J. J., El-Badry K., et al. (2022): Testing White Dwarf Age Estimates Using Wide Double White Dwarf Binaries from Gaia EDR3. ApJ 934(2):148. 10.3847/1538-4357/ac78d9, arXiv:2206.00025 [astro-ph.SR]
  * Herwig et al. [1999] Herwig F., Blöcker T., Langer N., et al. (1999): On the formation of hydrogen-deficient post-AGB stars. A&A 349:L5–L8. arXiv:astro-ph/9908108 [astro-ph]
  * Holberg et al. [1993] Holberg J. B., Barstow M. A., Buckley D. A. H., et al. (1993): Two New Extremely Iron-rich Hot DA White Dwarfs and the Nature of the EUV Opacity. ApJ 416:806. 10.1086/173278
  * Hollands et al. [2017] Hollands M. A., Koester D., Alekseev V., et al. (2017): Cool DZ white dwarfs - I. Identification and spectral analysis. MNRAS 467(4):4970–5000. 10.1093/mnras/stx250, arXiv:1701.07827 [astro-ph.SR]
  * Hollands et al. [2018a] Hollands M. A., Gänsicke B. T., Koester D. (2018a): Cool DZ white dwarfs II: compositions and evolution of old remnant planetary systems. MNRAS 477(1):93–111. 10.1093/mnras/sty592, arXiv:1801.07714 [astro-ph.SR]
  * Hollands et al. [2018b] Hollands M. A., Tremblay P. E., Gänsicke B. T., et al. (2018b): The Gaia 20 pc white dwarf sample. MNRAS 480(3):3942–3961. 10.1093/mnras/sty2057, arXiv:1805.12590 [astro-ph.SR]
  * Hollands et al. [2020] Hollands M. A., Tremblay P. E., Gänsicke B. T., et al. (2020): An ultra-massive white dwarf with a mixed hydrogen-carbon atmosphere as a likely merger remnant. Nature Astronomy 4:663–669. 10.1038/s41550-020-1028-0, arXiv:2003.00028 [astro-ph.SR]
  * Hollands et al. [2021] Hollands M. A., Tremblay P.-E., Gänsicke B. T., et al. (2021): Alkali metals in white dwarf atmospheres as tracers of ancient planetary crusts. Nature Astronomy 5:451–459. 10.1038/s41550-020-01296-7, arXiv:2101.01225 [astro-ph.EP]
  * Hollands et al. [2022] Hollands M. A., Tremblay P. E., Gänsicke B. T., et al. (2022): Spectral analysis of cool white dwarfs accreting from planetary systems: from the ultraviolet to the optical. MNRAS 511(1):71–82. 10.1093/mnras/stab3696, arXiv:2112.08887 [astro-ph.SR]
  * Hoskin et al. [2020] Hoskin M. J., Toloza O., Gänsicke B. T., et al. (2020): White dwarf pollution by hydrated planetary remnants: hydrogen and metals in WD J204713.76-125908.9. MNRAS 499(1):171–182. 10.1093/mnras/staa2717, arXiv:2009.05053 [astro-ph.EP]
  * Hoyer et al. [2017] Hoyer D., Rauch T., Werner K., et al. (2017): Complete spectral energy distribution of the hot, helium-rich white dwarf RX J0503.9-2854. A&A 598:A135. 10.1051/0004-6361/201629869, arXiv:1610.09177 [astro-ph.SR]
  * Hoyer et al. [2018] Hoyer D., Rauch T., Werner K., et al. (2018): Search for trans-iron elements in hot, helium-rich white dwarfs with the HST Cosmic Origins Spectrograph. A&A 612:A62. 10.1051/0004-6361/201732401, arXiv:1801.02414 [astro-ph.SR]
  * Hügelmeyer et al. [2005] Hügelmeyer S. D., Dreizler S., Werner K., et al. (2005): Spectral analyses of DO white dwarfs and PG 1159 stars from the Sloan Digital Sky Survey. A&A 442(1):309–314. 10.1051/0004-6361:20053280, arXiv:astro-ph/0508101 [astro-ph]
  * Hügelmeyer et al. [2006] Hügelmeyer S. D., Dreizler S., Homeier D., et al. (2006): Spectral analyses of eighteen hot H-deficient (pre-) white dwarfs from the Sloan Digital Sky Survey Data Release 4. A&A 454(2):617–624. 10.1051/0004-6361:20064869, arXiv:astro-ph/0605551 [astro-ph]
  * Iben & Tutukov [1984] Iben J.I., Tutukov A. V. (1984): Cooling of low-mass carbon-oxygen dwarfs from the planetary nucleus stage through the crystallization stage. ApJ 282:615–630. 10.1086/162241
  * Iben et al. [1983] Iben J.I., Kaler J. B., Truran J. W., et al. (1983): On the evolution of those nuclei of planetary nebulae that experiencea final helium shell flash. ApJ 264:605–612. 10.1086/160631
  * Isern [2019] Isern J. (2019): The Star Formation History in the Solar Neighborhood as Told by Massive White Dwarfs. ApJ 878(1):L11. 10.3847/2041-8213/ab238e, arXiv:1905.10779 [astro-ph.GA]
  * Izquierdo et al. [2021] Izquierdo P., Toloza O., Gänsicke B. T., et al. (2021): GD 424 - a helium-atmosphere white dwarf with a large amount of trace hydrogen in the process of digesting a rocky planetesimal. MNRAS 501(3):4276–4288. 10.1093/mnras/staa3987, arXiv:2012.12957 [astro-ph.EP]
  * Jiménez-Esteban et al. [2018] Jiménez-Esteban F. M., Torres S., Rebassa-Mansergas A., et al. (2018): A white dwarf catalogue from Gaia-DR2 and the Virtual Observatory. MNRAS 480(4):4505–4518. 10.1093/mnras/sty2120, arXiv:1807.02559 [astro-ph.SR]
  * Jiménez-Esteban et al. [2023] Jiménez-Esteban F. M., Torres S., Rebassa-Mansergas A., et al. (2023): Spectral classification of the 100 pc white dwarf population from Gaia-DR3 and the virtual observatory. MNRAS 518(4):5106–5122. 10.1093/mnras/stac3382, arXiv:2211.08852 [astro-ph.SR]
  * Johnson et al. [2022] Johnson T. M., Klein B. L., Koester D., et al. (2022): Unusual Abundances from Planetary System Material Polluting the White Dwarf G238-44. ApJ 941(2):113. 10.3847/1538-4357/aca089, arXiv:2211.02673 [astro-ph.EP]
  * Jordan & Koester [1986] Jordan S., Koester D. (1986): Model atmospheres and synthetic spectra for white dwarfs with chemically stratified atmospheres. A&AS 65:367–377
  * Jura & Xu [2010] Jura M., Xu S. (2010): The Survival of Water Within Extrasolar Minor Planets. AJ 140(5):1129–1136. 10.1088/0004-6256/140/5/1129, arXiv:1001.2595 [astro-ph.EP]
  * Jura & Young [2014] Jura M., Young E. D. (2014): Extrasolar Cosmochemistry. Ann. Rev. Earth Planet. Sci. 42(1):45–67. 10.1146/annurev-earth-060313-054740
  * Jura et al. [2012] Jura M., Xu S., Klein B., et al. (2012): Two Extrasolar Asteroids with Low Volatile-element Mass Fractions. ApJ 750(1):69. 10.1088/0004-637X/750/1/69, arXiv:1203.2885 [astro-ph.EP]
  * Kaiser et al. [2021] Kaiser B. C., Clemens J. C., Blouin S., et al. (2021): Lithium pollution of a white dwarf records the accretion of an extrasolar planetesimal. Science 371(6525):168–172. 10.1126/science.abd1714, arXiv:2012.12900 [astro-ph.EP]
  * Kalirai [2012] Kalirai J. S. (2012): The age of the Milky Way inner halo. Nature 486(7401):90–92. 10.1038/nature11062, arXiv:1205.6802 [astro-ph.GA]
  * Kawka et al. [2023] Kawka A., Ferrario L., Vennes S. (2023): The non-explosive stellar merging origin of the ultra-massive carbon-rich white dwarfs. MNRAS 520(4):6299–6311. 10.1093/mnras/stad553, arXiv:2302.11118 [astro-ph.SR]
  * Kepler et al. [2019] Kepler S. O., Pelisoli I., Koester D., et al. (2019): White dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 14. MNRAS 486(2):2169–2183. 10.1093/mnras/stz960, arXiv:1904.01626 [astro-ph.SR]
  * Kepler et al. [2021] Kepler S. O., Koester D., Pelisoli I., et al. (2021): White dwarf and subdwarf stars in the Sloan Digital Sky Survey Data Release 16. MNRAS 507(3):4646–4660. 10.1093/mnras/stab2411, arXiv:2108.10915 [astro-ph.SR]
  * Kilic et al. [2017] Kilic M., Munn J. A., Harris H. C., et al. (2017): The Ages of the Thin Disk, Thick Disk, and the Halo from Nearby White Dwarfs. ApJ 837(2):162. 10.3847/1538-4357/aa62a5, arXiv:1702.06984 [astro-ph.SR]
  * Kilic et al. [2018] Kilic M., Hambly N. C., Bergeron P., et al. (2018): Gaia reveals evidence for merged white dwarfs. MNRAS 479(1):L113–L117. 10.1093/mnrasl/sly110, arXiv:1805.01227 [astro-ph.SR]
  * Kilic et al. [2020] Kilic M., Bergeron P., Kosakowski A., et al. (2020): The 100 pc White Dwarf Sample in the SDSS Footprint. ApJ 898(1):84. 10.3847/1538-4357/ab9b8d, arXiv:2006.00323 [astro-ph.SR]
  * Kilic et al. [2024] Kilic M., Bergeron P., Blouin S., et al. (2024): White Dwarf Merger Remnants: The DAQ Subclass. arXiv e-prints arXiv:2403.08878. 10.48550/arXiv.2403.08878, arXiv:2403.08878 [astro-ph.SR]
  * Klein et al. [2010] Klein B., Jura M., Koester D., et al. (2010): Chemical Abundances in the Externally Polluted White Dwarf GD 40: Evidence of a Rocky Extrasolar Minor Planet. ApJ 709(2):950–962. 10.1088/0004-637X/709/2/950, arXiv:0912.1422 [astro-ph.EP]
  * Klein et al. [2011] Klein B., Jura M., Koester D., et al. (2011): Rocky Extrasolar Planetary Compositions Derived from Externally Polluted White Dwarfs. ApJ 741(1):64. 10.1088/0004-637X/741/1/64, arXiv:1108.1565 [astro-ph.EP]
  * Klein et al. [2021] Klein B. L., Doyle A. E., Zuckerman B., et al. (2021): Discovery of Beryllium in White Dwarfs Polluted by Planetesimal Accretion. ApJ 914(1):61. 10.3847/1538-4357/abe40b, arXiv:2102.01834 [astro-ph.SR]
  * Koester [1976] Koester D. (1976): Convective Mixing and Accretion in White Dwarfs. A&A 52:415
  * Koester [2009] Koester D. (2009): Accretion and diffusion in white dwarfs. New diffusion timescales and applications to GD 362 and G 29-38. A&A 498(2):517–525. 10.1051/0004-6361/200811468, arXiv:0903.1499 [astro-ph.SR]
  * Koester [2015] Koester D. (2015): On Thermohaline Mixing in Accreting White Dwarfs. In: Dufour P., Bergeron P., Fontaine G. (eds.) ASP Conf. Ser. 493: 19th European Workshop on White Dwarfs. San Francisco: Astronomical Society of the Pacific, p. 129, 10.48550/arXiv.1408.6934, 1408.6934
  * Koester & Kepler [2015] Koester D., Kepler S. O. (2015): DB white dwarfs in the Sloan Digital Sky Survey data release 10 and 12. A&A 583:A86. 10.1051/0004-6361/201527169, arXiv:1509.08244 [astro-ph.SR]
  * Koester & Kepler [2019] Koester D., Kepler S. O. (2019): Carbon-rich (DQ) white dwarfs in the Sloan Digital Sky Survey. A&A 628:A102. 10.1051/0004-6361/201935946, arXiv:1905.11174 [astro-ph.SR]
  * Koester & Knist [2006] Koester D., Knist S. (2006): New DQ white dwarfs in the Sloan Digital Sky Survey DR4: confirmation of two sequences. A&A 454(3):951–956. 10.1051/0004-6361:20065287, arXiv:astro-ph/0603734 [astro-ph]
  * Koester & Wilken [2006] Koester D., Wilken D. (2006): The accretion-diffusion scenario for metals in cool white dwarfs. A&A 453(3):1051–1057. 10.1051/0004-6361:20064843, arXiv:astro-ph/0603185 [astro-ph]
  * Koester et al. [1982] Koester D., Weidemann V., Zeidler E. M. (1982): Atmospheric parameters and carbon abundance of white dwarfs of spectral types C2 and DC. A&A 116:147–157
  * Koester et al. [1994] Koester D., Liebert J., Saffer R. A. (1994): GD 323: New Observations and Analysis of the Prototype DAB White Dwarf. ApJ 422:783. 10.1086/173770
  * Koester et al. [2005] Koester D., Rollenhagen K., Napiwotzki R., et al. (2005): Metal traces in white dwarfs of the SPY (ESO Supernova Ia Progenitor Survey) sample. A&A 432(3):1025–1032. 10.1051/0004-6361:20041927
  * Koester et al. [2011] Koester D., Girven J., Gänsicke B. T., et al. (2011): Cool DZ white dwarfs in the SDSS. A&A 530:A114. 10.1051/0004-6361/201116816, arXiv:1105.0268 [astro-ph.SR]
  * Koester et al. [2014a] Koester D., Gänsicke B. T., Farihi J. (2014a): The frequency of planetary debris around young white dwarfs. A&A 566:A34. 10.1051/0004-6361/201423691, arXiv:1404.2617 [astro-ph.SR]
  * Koester et al. [2014b] Koester D., Provencal J., Gänsicke B. T. (2014b): Atmospheric parameters and carbon abundance for hot DB white dwarfs. A&A 568:A118. 10.1051/0004-6361/201424231, arXiv:1407.6157 [astro-ph.SR]
  * Koester et al. [2020] Koester D., Kepler S. O., Irwin A. W. (2020): New white dwarf envelope models and diffusion. Application to DQ white dwarfs. A&A 635:A103. 10.1051/0004-6361/202037530, arXiv:2002.10170 [astro-ph.SR]
  * Kollmeier et al. [2017] Kollmeier J. A., Zasowski G., Rix H.-W., et al. (2017): SDSS-V: Pioneering Panoptic Spectroscopy. arXiv e-prints arXiv:1711.03234. 10.48550/arXiv.1711.03234, arXiv:1711.03234 [astro-ph.GA]
  * Krzesinski et al. [2009] Krzesinski J., Kleinman S. J., Nitta A., et al. (2009): A hot white dwarf luminosity function from the Sloan Digital Sky Survey. A&A 508(1):339–344. 10.1051/0004-6361/200912094
  * Kudritzki & Puls [2000] Kudritzki R.-P., Puls J. (2000): Winds from Hot Stars. ARA&A 38:613–666. 10.1146/annurev.astro.38.1.613
  * Kupka et al. [2018] Kupka F., Zaussinger F., Montgomery M. H. (2018): Mixing and overshooting in surface convection zones of DA white dwarfs: first results from ANTARES. MNRAS 474(4):4660–4671. 10.1093/mnras/stx3119, arXiv:1712.00641 [astro-ph.SR]
  * Lawlor & MacDonald [2006] Lawlor T. M., MacDonald J. (2006): The mass of helium in white dwarf stars and the formation and evolution of hydrogen-deficient post-AGB stars. MNRAS 371(1):263–282. 10.1111/j.1365-2966.2006.10641.x, arXiv:astro-ph/0605747 [astro-ph]
  * Leggett et al. [1998] Leggett S. K., Ruiz M. T., Bergeron P. (1998): The Cool White Dwarf Luminosity Function and the Age of the Galactic Disk. ApJ 497(1):294–302. 10.1086/305463
  * Liebert [1983] Liebert J. (1983): G35-26: carbon in a peculiar DA white dwarf. PASP 95:878–882. 10.1086/131264
  * Liebert et al. [2005] Liebert J., Bergeron P., Holberg J. B. (2005): The Formation Rate and Mass and Luminosity Functions of DA White Dwarfs from the Palomar Green Survey. ApJS 156(1):47–68. 10.1086/425738, arXiv:astro-ph/0406657 [astro-ph]
  * Limoges & Bergeron [2010] Limoges M. M., Bergeron P. (2010): A Spectroscopic Analysis of White Dwarfs in the Kiso Survey. ApJ 714(2):1037–1051. 10.1088/0004-637X/714/2/1037, arXiv:1003.4313 [astro-ph.SR]
  * Limoges et al. [2009] Limoges M. M., Bergeron P., Dufour P. (2009): Spectroscopic Analysis of the White Dwarf KUV 02196+2816: A New Unresolved DA+DB Degenerate Binary. ApJ 696(2):1461–1465. 10.1088/0004-637X/696/2/1461, arXiv:0902.3640 [astro-ph.SR]
  * Limoges et al. [2015] Limoges M. M., Bergeron P., Lépine S. (2015): Physical Properties of the Current Census of Northern White Dwarfs within 40 pc of the Sun. ApJS 219(2):19. 10.1088/0067-0049/219/2/19, arXiv:1505.02297 [astro-ph.SR]
  * Löbling et al. [2020] Löbling L., Maney M. A., Rauch T., et al. (2020): First discovery of trans-iron elements in a DAO-type white dwarf (BD-22∘3467). MNRAS 492(1):528–548. 10.1093/mnras/stz3247, arXiv:1911.09573 [astro-ph.SR]
  * López-Sanjuan et al. [2022] López-Sanjuan C., Tremblay P. E., Ederoclite A., et al. (2022): J-PLUS: Spectral evolution of white dwarfs by PDF analysis. A&A 658:A79. 10.1051/0004-6361/202141746, arXiv:2110.14421 [astro-ph.SR]
  * MacDonald & Vennes [1991] MacDonald J., Vennes S. (1991): How Much Hydrogen Is There in a White Dwarf? ApJ 371:719. 10.1086/169937
  * MacDonald et al. [1998] MacDonald J., Hernanz M., Jose J. (1998): Evolutionary calculations of carbon dredge-up in helium envelope white dwarfs. MNRAS 296(3):523–530. 10.1046/j.1365-8711.1998.01392.x, arXiv:astro-ph/9803121 [astro-ph]
  * Macfarlane et al. [2017] Macfarlane S. A., Woudt P. A., Dufour P., et al. (2017): The OmegaWhite Survey for short-period variable stars - IV. Discovery of the warm DQ white dwarf OW J175358.85-310728.9. MNRAS 470(1):732–741. 10.1093/mnras/stx741, arXiv:1703.08122 [astro-ph.SR]
  * Manseau et al. [2016] Manseau P. M., Bergeron P., Green E. M. (2016): A Spectroscopic Search for Chemically Stratified White Dwarfs in the Sloan Digital Sky Survey. ApJ 833(2):127. 10.3847/1538-4357/833/2/127
  * Manser et al. [2024] Manser C. J., Gänsicke B. T., Izquierdo P., et al. (2024): The frequency of metal-enrichment of cool helium-atmosphere white dwarfs using the DESI Early Data Release. MNRAS 10.1093/mnrasl/slae026, arXiv:2402.18644 [astro-ph.EP]
  * Martin et al. [2005] Martin D. C., Fanson J., Schiminovich D., et al. (2005): The Galaxy Evolution Explorer: A Space Ultraviolet Survey Mission. ApJ 619(1):L1–L6. 10.1086/426387, arXiv:astro-ph/0411302 [astro-ph]
  * McCleery et al. [2020] McCleery J., Tremblay P.-E., Gentile Fusillo N. P., et al. (2020): Gaia white dwarfs within 40 pc II: the volume-limited Northern hemisphere sample. MNRAS 499(2):1890–1908. 10.1093/mnras/staa2030, arXiv:2006.00874 [astro-ph.SR]
  * Melis et al. [2011] Melis C., Farihi J., Dufour P., et al. (2011): Accretion of a Terrestrial-like Minor Planet by a White Dwarf. ApJ 732(2):90. 10.1088/0004-637X/732/2/90, arXiv:1102.0311 [astro-ph.SR]
  * Michaud et al. [2015] Michaud G., Alecian G., Richer J. (2015): Atomic Diffusion in Stars. Cham: Springer International
  * Miller Bertolami & Althaus [2006] Miller Bertolami M. M., Althaus L. G. (2006): Full evolutionary models for PG 1159 stars. Implications for the helium-rich O(He) stars. A&A 454(3):845–854. 10.1051/0004-6361:20054723, arXiv:astro-ph/0603846 [astro-ph]
  * Miller Bertolami et al. [2006] Miller Bertolami M. M., Althaus L. G., Serenelli A. M., et al. (2006): New evolutionary calculations for the born again scenario. A&A 449(1):313–326. 10.1051/0004-6361:20053804, arXiv:astro-ph/0511406 [astro-ph]
  * Miller Bertolami et al. [2017] Miller Bertolami M. M., Althaus L. G., Córsico A. H. (2017): On the Formation of DA White Dwarfs with low Hydrogen Contents: Preliminary Results. In: Tremblay P. E., Gänsicke B., Marsh T. (eds.) ASP Conf. Ser. 509: 20th European Workshop on White Dwarfs. San Francisco: Astronomical Society of the Pacific, p. 435, 1609.08683
  * Moss et al. [2024] Moss A., Bergeron P., Kilic M., et al. (2024): Discovery of a magnetic double-faced DBA white dwarf. MNRAS 527(4):10111–10122. 10.1093/mnras/stad3825
  * Napiwotzki [1992] Napiwotzki R. (1992): Analysis of central stars of old planetary nebulae: Problems with the Balmer lines. In: Heber U., Jeffery C. S. (eds.) The Atmospheres of Early-Type Stars, vol. 401. Berlin: Springer, p. 310, 10.1007/3-540-55256-1_328
  * Napiwotzki [1999] Napiwotzki R. (1999): Spectroscopic investigation of old planetaries. IV. Model atmosphere analysis. A&A 350:101–119. arXiv:astro-ph/9908181 [astro-ph]
  * Napiwotzki & Rauch [1994] Napiwotzki R., Rauch T. (1994): The Balmer line problem of hot stars and the impact of ion-dynamical effects on the Stark broadening of HI and HeII lines. A&A 285:603–608
  * O’Brien et al. [2023] O’Brien M. W., Tremblay P. E., Gentile Fusillo N. P., et al. (2023): Gaia white dwarfs within 40 pc - III. Spectroscopic observations of new candidates in the Southern hemisphere. MNRAS 518(2):3055–3073. 10.1093/mnras/stac3303, arXiv:2210.01608 [astro-ph.SR]
  * O’Brien et al. [2024] O’Brien M. W., Tremblay P. E., Klein B. L., et al. (2024): The 40 pc sample of white dwarfs from Gaia. MNRAS 527(3):8687–8705. 10.1093/mnras/stad3773, arXiv:2312.02735 [astro-ph.SR]
  * Oswalt et al. [1996] Oswalt T. D., Smith J. A., Wood M. A., et al. (1996): A lower limit of 9.5 Gyr on the age of the Galactic disk from the oldest white dwarf stars. Nature 382(6593):692–694. 10.1038/382692a0
  * Ourique et al. [2019] Ourique G., Romero A. D., Kepler S. O., et al. (2019): A study of cool white dwarfs in the Sloan Digital Sky Survey Data Release 12. MNRAS 482(1):649–657. 10.1093/mnras/sty2751, arXiv:1810.03554 [astro-ph.SR]
  * Ourique et al. [2020] Ourique G., Kepler S. O., Romero A. D., et al. (2020): Evidence of spectral evolution on the white dwarf sample from the Gaia mission. MNRAS 492(4):5003–5010. 10.1093/mnras/staa120, arXiv:2001.04378 [astro-ph.SR]
  * Paquette et al. [1986] Paquette C., Pelletier C., Fontaine G., et al. (1986): Diffusion in White Dwarfs: New Results and Comparative Study. ApJS 61:197. 10.1086/191112
  * Paxton et al. [2011] Paxton B., Bildsten L., Dotter A., et al. (2011): Modules for Experiments in Stellar Astrophysics (MESA). ApJS 192(1):3. 10.1088/0067-0049/192/1/3, arXiv:1009.1622 [astro-ph.SR]
  * Pelletier et al. [1986] Pelletier C., Fontaine G., Wesemael F., et al. (1986): Carbon Pollution in Helium-rich White Dwarf Atmospheres: Time-dependent Calculations of the Dredge-up Process. ApJ 307:242. 10.1086/164410
  * Pereira et al. [2005] Pereira C., Bergeron P., Wesemael F. (2005): Discovery of Spectroscopic Variations in the DAB White Dwarf GD 323. ApJ 623(2):1076–1082. 10.1086/429219, arXiv:astro-ph/0501620 [astro-ph]
  * Petitclerc et al. [2005] Petitclerc N., Wesemael F., Kruk J. W., et al. (2005): FUSE Observations of DB White Dwarfs. ApJ 624(1):317–330. 10.1086/428750
  * Preval et al. [2013] Preval S. P., Barstow M. A., Holberg J. B., et al. (2013): A comprehensive near- and far-ultraviolet spectroscopic study of the hot DA white dwarf G191-B2B. MNRAS 436(1):659–674. 10.1093/mnras/stt1604, arXiv:1308.4825 [astro-ph.SR]
  * Preval et al. [2019] Preval S. P., Barstow M. A., Bainbridge M., et al. (2019): A far-UV survey of three hot, metal-polluted white dwarf stars: WD0455-282, WD0621-376, and WD2211-495. MNRAS 487(3):3470–3487. 10.1093/mnras/stz1506, arXiv:1905.12350 [astro-ph.SR]
  * Provencal et al. [2000] Provencal J. L., Shipman H. L., Thejll P., et al. (2000): Carbon and Hydrogen in Hot DB White Dwarfs. ApJ 542(2):1041–1056. 10.1086/317030
  * Quirion et al. [2012] Quirion P. O., Fontaine G., Brassard P. (2012): Wind Competing Against Settling: A Coherent Model of the GW Virginis Instability Domain. ApJ 755(2):128. 10.1088/0004-637X/755/2/128
  * Raddi et al. [2015] Raddi R., Gänsicke B. T., Koester D., et al. (2015): Likely detection of water-rich asteroid debris in a metal-polluted white dwarf. MNRAS 450(2):2083–2093. 10.1093/mnras/stv701, arXiv:1503.07864 [astro-ph.SR]
  * Rauch et al. [1998] Rauch T., Dreizler S., Wolff B. (1998): Spectral analysis of O(He)-type post-AGB stars. A&A 338:651–660
  * Rauch et al. [2013] Rauch T., Werner K., Bohlin R., et al. (2013): The virtual observatory service TheoSSA: Establishing a database of synthetic stellar flux standards. I. NLTE spectral analysis of the DA-type white dwarf G191-B2B. A&A 560:A106. 10.1051/0004-6361/201322336, arXiv:1308.6450 [astro-ph.SR]
  * Rauch et al. [2014a] Rauch T., Werner K., Quinet P., et al. (2014a): Stellar laboratories. II. New Zn iv and Zn v oscillator strengths and their validation in the hot white dwarfs G191-B2B and RE 0503-289. A&A 564:A41. 10.1051/0004-6361/201423491, arXiv:1403.2183 [astro-ph.SR]
  * Rauch et al. [2014b] Rauch T., Werner K., Quinet P., et al. (2014b): Stellar laboratories. III. New Ba v, Ba vi, and Ba vii oscillator strengths and the barium abundance in the hot white dwarfs G191-B2B and RE 0503-289. A&A 566:A10. 10.1051/0004-6361/201423878, arXiv:1404.6094 [astro-ph.SR]
  * Rauch et al. [2015a] Rauch T., Hoyer D., Quinet P., et al. (2015a): Stellar laboratories. V. The Xe vi ultraviolet spectrum and the xenon abundance in the hot DO-type white dwarf RE 0503-289. A&A 577:A88. 10.1051/0004-6361/201526078, arXiv:1504.01991 [astro-ph.SR]
  * Rauch et al. [2015b] Rauch T., Werner K., Quinet P., et al. (2015b): Stellar laboratories. IV. New Ga iv, Ga v, and Ga vi oscillator strengths and the gallium abundance in the hot white dwarfs G191-B2B and RE 0503-289. A&A 577:A6. 10.1051/0004-6361/201425326, arXiv:1501.07751 [astro-ph.SR]
  * Rauch et al. [2016a] Rauch T., Quinet P., Hoyer D., et al. (2016a): Stellar laboratories. VI. New Mo iv-vii oscillator strengths and the molybdenum abundance in the hot white dwarfs G191-B2B and RE 0503-289. A&A 587:A39. 10.1051/0004-6361/201527324, arXiv:1512.07525 [astro-ph.SR]
  * Rauch et al. [2016b] Rauch T., Quinet P., Hoyer D., et al. (2016b): Stellar laboratories. VII. New Kr iv - vii oscillator strengths and an improved spectral analysis of the hot, hydrogen-deficient DO-type white dwarf RE 0503-289. A&A 590:A128. 10.1051/0004-6361/201628131, arXiv:1603.00701 [astro-ph.SR]
  * Rauch et al. [2017a] Rauch T., Gamrath S., Quinet P., et al. (2017a): Stellar laboratories . VIII. New Zr iv-vii, Xe iv-v, and Xe vii oscillator strengths and the Al, Zr, and Xe abundances in the hot white dwarfs G191-B2B and RE 0503-289. A&A 599:A142. 10.1051/0004-6361/201629794, arXiv:1611.07364 [physics.atom-ph]
  * Rauch et al. [2017b] Rauch T., Quinet P., Knörzer M., et al. (2017b): Stellar laboratories . IX. New Se v, Sr iv-vii, Te vi, and I vi oscillator strengths and the Se, Sr, Te, and I abundances in the hot white dwarfs G191-B2B and RE 0503-289. A&A 606:A105. 10.1051/0004-6361/201730383, arXiv:1706.09215 [astro-ph.SR]
  * Rauch et al. [2020] Rauch T., Gamrath S., Quinet P., et al. (2020): Stellar laboratories. X. New Cu IV-VII oscillator strengths and the first detection of copper and indium in hot white dwarfs. A&A 637:A4. 10.1051/0004-6361/201936620, arXiv:2004.01633 [astro-ph.SR]
  * Reindl et al. [2014a] Reindl N., Rauch T., Werner K., et al. (2014a): Analysis of cool DO-type white dwarfs from the Sloan Digital Sky Survey data release 10. A&A 572:A117. 10.1051/0004-6361/201424861, arXiv:1410.7666 [astro-ph.SR]
  * Reindl et al. [2014b] Reindl N., Rauch T., Werner K., et al. (2014b): On helium-dominated stellar evolution: the mysterious role of the O(He)-type stars. A&A 566:A116. 10.1051/0004-6361/201423498, arXiv:1405.1589 [astro-ph.SR]
  * Reindl et al. [2023] Reindl N., Islami R., Werner K., et al. (2023): The bright blue side of the night sky: Spectroscopic survey of bright and hot (pre-) white dwarfs. A&A 677:A29. 10.1051/0004-6361/202346865, arXiv:2307.03721 [astro-ph.SR]
  * Renedo et al. [2010] Renedo I., Althaus L. G., Miller Bertolami M. M., et al. (2010): New Cooling Sequences for Old White Dwarfs. ApJ 717(1):183–195. 10.1088/0004-637X/717/1/183, arXiv:1005.2170 [astro-ph.SR]
  * Rogers et al. [2024] Rogers L. K., Bonsor A., Xu S., et al. (2024): Seven white dwarfs with circumstellar gas discs I: white dwarf parameters and accreted planetary abundances. MNRAS 527(3):6038–6054. 10.1093/mnras/stad3557, arXiv:2311.14048 [astro-ph.EP]
  * Rolland et al. [2018] Rolland B., Bergeron P., Fontaine G. (2018): On the Spectral Evolution of Helium-atmosphere White Dwarfs Showing Traces of Hydrogen. ApJ 857(1):56. 10.3847/1538-4357/aab713, arXiv:1803.05965 [astro-ph.SR]
  * Rolland et al. [2020] Rolland B., Bergeron P., Fontaine G. (2020): A Convective Dredge-up Model as the Origin of Hydrogen in DBA White Dwarfs. ApJ 889(2):87. 10.3847/1538-4357/ab6602, arXiv:2001.01085 [astro-ph.SR]
  * Romero et al. [2012] Romero A. D., Córsico A. H., Althaus L. G., et al. (2012): Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models. MNRAS 420(2):1462–1480. 10.1111/j.1365-2966.2011.20134.x, arXiv:1109.6682 [astro-ph.SR]
  * Salaris & Cassisi [2017] Salaris M., Cassisi S. (2017): Chemical element transport in stellar evolution models. RSOS 4(8):170192. 10.1098/rsos.170192, arXiv:1707.07454 [astro-ph.SR]
  * Salaris et al. [2022] Salaris M., Cassisi S., Pietrinferni A., et al. (2022): The updated BASTI stellar evolution models and isochrones - III. White dwarfs. MNRAS 509(4):5197–5208. 10.1093/mnras/stab3359, arXiv:2111.09285 [astro-ph.SR]
  * Saumon et al. [2022] Saumon D., Blouin S., Tremblay P.-E. (2022): Current challenges in the physics of white dwarf stars. Phys. Rep. 988:1–63. 10.1016/j.physrep.2022.09.001, arXiv:2209.02846 [astro-ph.SR]
  * Schreiber et al. [2019] Schreiber M. R., Gänsicke B. T., Toloza O., et al. (2019): Cold Giant Planets Evaporated by Hot White Dwarfs. ApJ 887(1):L4. 10.3847/2041-8213/ab42e2, arXiv:1912.02345 [astro-ph.SR]
  * Schuh et al. [2002] Schuh S. L., Dreizler S., Wolff B. (2002): Equilibrium abundances in hot DA white dwarfs as derived from self-consistent diffusion models. I. Analysis of spectroscopic EUVE data. A&A 382:164–173. 10.1051/0004-6361:20011588, arXiv:astro-ph/0111245 [astro-ph]
  * Scóccola et al. [2006] Scóccola C. G., Althaus L. G., Serenelli A. M., et al. (2006): DQ white-dwarf stars with low C abundance: possible progenitors. A&A 451(1):147–155. 10.1051/0004-6361:20053769, arXiv:astro-ph/0602196 [astro-ph]
  * Sion [1984] Sion E. M. (1984): Implications of the absolute magnitude distribution functions of DA and non-DA white dwarfs. ApJ 282:612–614. 10.1086/162240
  * Sion [1999] Sion E. M. (1999): White Dwarfs in Cataclysmic Variables. PASP 111(759):532–555. 10.1086/316361
  * Sion et al. [1983] Sion E. M., Greenstein J. L., Landstreet J. D., et al. (1983): A proposed new white dwarf spectral classification system. ApJ 269:253–257. 10.1086/161036
  * Subasavage et al. [2017] Subasavage J. P., Jao W.-C., Henry T. J., et al. (2017): The Solar Neighborhood. XXXIX. Parallax Results from the CTIOPI and NOFS Programs: 50 New Members of the 25 parsec White Dwarf Sample. AJ 154(1):32. 10.3847/1538-3881/aa76e0, arXiv:1706.00709 [astro-ph.SR]
  * Swan et al. [2019] Swan A., Farihi J., Koester D., et al. (2019): Interpretation and diversity of exoplanetary material orbiting white dwarfs. MNRAS 490(1):202–218. 10.1093/mnras/stz2337, arXiv:1908.08047 [astro-ph.EP]
  * Swan et al. [2023] Swan A., Farihi J., Melis C., et al. (2023): Planetesimals at DZ stars - I. Chondritic compositions and a massive accretion event. MNRAS 526(3):3815–3831. 10.1093/mnras/stad2867, arXiv:2309.06467 [astro-ph.EP]
  * Tassoul et al. [1990] Tassoul M., Fontaine G., Winget D. E. (1990): Evolutionary Models for Pulsation Studies of White Dwarfs. ApJS 72:335. 10.1086/191420
  * Torres et al. [2023] Torres S., Cruz P., Murillo-Ojeda R., et al. (2023): White dwarf spectral type-temperature distribution from Gaia DR3 and the Virtual Observatory. A&A 677:A159. 10.1051/0004-6361/202346977, arXiv:2307.13629 [astro-ph.SR]
  * Tremblay & Bergeron [2008] Tremblay P. E., Bergeron P. (2008): The Ratio of Helium- to Hydrogen-Atmosphere White Dwarfs: Direct Evidence for Convective Mixing. ApJ 672(2):1144–1152. 10.1086/524134, arXiv:0710.1073 [astro-ph]
  * Tremblay et al. [2011] Tremblay P. E., Bergeron P., Gianninas A. (2011): An Improved Spectroscopic Analysis of DA White Dwarfs from the Sloan Digital Sky Survey Data Release 4. ApJ 730(2):128. 10.1088/0004-637X/730/2/128, arXiv:1102.0056 [astro-ph.SR]
  * Tremblay et al. [2013] Tremblay P. E., Ludwig H. G., Steffen M., et al. (2013): Pure-hydrogen 3D model atmospheres of cool white dwarfs. A&A 552:A13. 10.1051/0004-6361/201220813, arXiv:1302.2013 [astro-ph.SR]
  * Tremblay et al. [2014] Tremblay P. E., Kalirai J. S., Soderblom D. R., et al. (2014): White Dwarf Cosmochronology in the Solar Neighborhood. ApJ 791(2):92. 10.1088/0004-637X/791/2/92, arXiv:1406.5173 [astro-ph.SR]
  * Tremblay et al. [2015] Tremblay P. E., Ludwig H. G., Freytag B., et al. (2015): Calibration of the Mixing-length Theory for Convective White Dwarf Envelopes. ApJ 799(2):142. 10.1088/0004-637X/799/2/142, arXiv:1412.1789 [astro-ph.SR]
  * Tremblay et al. [2019] Tremblay P. E., Cukanovaite E., Gentile Fusillo N. P., et al. (2019): Fundamental parameter accuracy of DA and DB white dwarfs in Gaia Data Release 2. MNRAS 482(4):5222–5232. 10.1093/mnras/sty3067, arXiv:1811.03084 [astro-ph.SR]
  * Unglaub [2008] Unglaub K. (2008): Mass-loss and diffusion in subdwarf B stars and hot white dwarfs: do weak winds exist? A&A 486(3):923–940. 10.1051/0004-6361:20078019, arXiv:0808.1072 [astro-ph]
  * Unglaub & Bues [1998] Unglaub K., Bues I. (1998): The effect of diffusion and mass loss on the helium abundance in hot white dwarfs and subdwarfs. A&A 338:75–84
  * Unglaub & Bues [2000] Unglaub K., Bues I. (2000): The chemical evolution of hot white dwarfs in the presence of diffusion and mass loss. A&A 359:1042–1058
  * Vennes & Fontaine [1992] Vennes S., Fontaine G. (1992): An Interpretation of the Spectral Properties of Hot Hydrogen-rich White Dwarfs with Stratified H/He Model Atmospheres. ApJ 401:288. 10.1086/172060
  * Vennes et al. [1988] Vennes S., Pelletier C., Fontaine G., et al. (1988): The Presence of Helium in Hot DA White Dwarfs: The Role of Radiative Levitation and the Case for Stratified Atmospheres. ApJ 331:876. 10.1086/166606
  * Vennes et al. [2005] Vennes S., Chayer P., Dupuis J. (2005): Discovery of Photospheric Germanium in Hot DA White Dwarfs. ApJ 622(2):L121–L124. 10.1086/429667
  * Vennes et al. [2006] Vennes S., Chayer P., Dupuis J., et al. (2006): Iron in Hot DA White Dwarfs. ApJ 652(2):1554–1562. 10.1086/508509, arXiv:astro-ph/0608416 [astro-ph]
  * Vennes et al. [2024] Vennes S., Kawka A., Klein B. L., et al. (2024): A cool, magnetic white dwarf accreting planetary debris. MNRAS 527(2):3122–3138. 10.1093/mnras/stad3370, arXiv:2311.07937 [astro-ph.SR]
  * Veras [2021] Veras D. (2021): Planetary Systems Around White Dwarfs. In: Oxford Research Encyclopedia of Planetary Science. Oxford: Oxford University Press, p. 1, 10.1093/acrefore/9780190647926.013.238
  * Veras et al. [2014] Veras D., Shannon A., Gänsicke B. T. (2014): Hydrogen delivery onto white dwarfs from remnant exo-Oort cloud comets. MNRAS 445(4):4175–4185. 10.1093/mnras/stu2026, arXiv:1409.7691 [astro-ph.SR]
  * Vincent et al. [2024] Vincent O., Barstow M. A., Jordan S., et al. (2024): Classification and parameterization of a large Gaia sample of white dwarfs using XP spectra. A&A 682:A5. 10.1051/0004-6361/202347694, arXiv:2308.05572 [astro-ph.SR]
  * Voss et al. [2007] Voss B., Koester D., Napiwotzki R., et al. (2007): High-resolution UVES/VLT spectra of white dwarfs observed for the ESO SN Ia progenitor survey. II. DB and DBA stars. A&A 470(3):1079–1088. 10.1051/0004-6361:20077285
  * Wachlin et al. [2017] Wachlin F. C., Vauclair G., Vauclair S., et al. (2017): Importance of fingering convection for accreting white dwarfs in the framework of full evolutionary calculations: the case of the hydrogen-rich white dwarfs GD 133 and G 29-38. A&A 601:A13. 10.1051/0004-6361/201630094, arXiv:1612.09320 [astro-ph.SR]
  * Wachlin et al. [2022] Wachlin F. C., Vauclair G., Vauclair S., et al. (2022): New simulations of accreting DA white dwarfs: Inferring accretion rates from the surface contamination. A&A 660:A30. 10.1051/0004-6361/202142289, arXiv:2109.11370 [astro-ph.SR]
  * Weidemann & Koester [1995] Weidemann V., Koester D. (1995): Surface carbon abundances and compositional stratification of cool helium-rich white dwarfs. A&A 297:216–222
  * Werner [1996a] Werner K. (1996a): On the Balmer Line Problem. ApJ 457:L39. 10.1086/309889
  * Werner [1996b] Werner K. (1996b): Search for trace amounts of hydrogen in hot DO white dwarfs. A&A 309:861–866
  * Werner & Dreizler [1994] Werner K., Dreizler S. (1994): On the nickel abundance in hot hydrogen-rich white dwarfs. A&A 286:L31–L34
  * Werner & Herwig [2006] Werner K., Herwig F. (2006): The Elemental Abundances in Bare Planetary Nebula Central Stars and the Shell Burning in AGB Stars. PASP 118(840):183–204. 10.1086/500443, arXiv:astro-ph/0512320 [astro-ph]
  * Werner & Rauch [2014] Werner K., Rauch T. (2014): Weak metal lines in optical high-resolution Very Large Telescope and Keck spectra of “cool” PG 1159 stars. A&A 569:A99. 10.1051/0004-6361/201424051
  * Werner et al. [1991] Werner K., Heber U., Hunger K. (1991): Non-LTE analysis of four PG1159 stars. A&A 244:437
  * Werner et al. [2007] Werner K., Rauch T., Kruk J. W. (2007): Discovery of photospheric argon in very hot central stars of planetary nebulae and white dwarfs. A&A 466(1):317–322. 10.1051/0004-6361:20077101, arXiv:astro-ph/0702387 [astro-ph]
  * Werner et al. [2012] Werner K., Rauch T., Ringat E., et al. (2012): First Detection of Krypton and Xenon in a White Dwarf. ApJ 753(1):L7. 10.1088/2041-8205/753/1/L7
  * Werner et al. [2014] Werner K., Rauch T., Kepler S. O. (2014): New hydrogen-deficient (pre-) white dwarfs in the Sloan Digital Sky Survey Data Release 10. A&A 564:A53. 10.1051/0004-6361/201423441
  * Werner et al. [2017] Werner K., Rauch T., Kruk J. W. (2017): Far-UV spectroscopy of two extremely hot, helium-rich white dwarfs. A&A 601:A8. 10.1051/0004-6361/201630266
  * Werner et al. [2018a] Werner K., Rauch T., Knörzer M., et al. (2018a): First detection of bromine and antimony in hot stars. A&A 614:A96. 10.1051/0004-6361/201832723, arXiv:1803.04809 [astro-ph.SR]
  * Werner et al. [2018b] Werner K., Rauch T., Kruk J. W. (2018b): Metal abundances in hot white dwarfs with signatures of a superionized wind. A&A 609:A107. 10.1051/0004-6361/201731740, arXiv:1711.04138 [astro-ph.SR]
  * Werner et al. [2019] Werner K., Rauch T., Reindl N. (2019): Spectral analysis of the extremely hot DA white dwarf PG 0948+534. MNRAS 483(4):5291–5300. 10.1093/mnras/sty3408, arXiv:1812.07486 [astro-ph.SR]
  * Wesemael et al. [1993] Wesemael F., Greenstein J. L., Liebert J., et al. (1993): An Atlas of Optical Spectra of White-Dwarf Stars. PASP 105:761. 10.1086/133228
  * Wesemael et al. [1994] Wesemael F., Bergeron P., Lamontagne R. L., et al. (1994): Hot Degenerates in the Montreal-Cambridge-Tololo Survey. II. Two New Hybrid White Dwarfs, MCT 0128-3846 and MCT 0453-2933, and the Nature of the DAB Stars. ApJ 429:369. 10.1086/174326
  * Williams et al. [2013] Williams K. A., Winget D. E., Montgomery M. H., et al. (2013): Photometric Variability in a Warm, Strongly Magnetic DQ White Dwarf, SDSS J103655.39+652252.2. ApJ 769(2):123. 10.1088/0004-637X/769/2/123, arXiv:1304.3165 [astro-ph.SR]
  * Williams et al. [2016] Williams K. A., Montgomery M. H., Winget D. E., et al. (2016): Variability in Hot Carbon-dominated Atmosphere (Hot DQ) White Dwarfs: Rapid Rotation? ApJ 817(1):27. 10.3847/0004-637X/817/1/27, arXiv:1511.08834 [astro-ph.SR]
  * Wilson et al. [2015] Wilson D. J., Gänsicke B. T., Koester D., et al. (2015): The composition of a disrupted extrasolar planetesimal at SDSS J0845+2257 (Ton 345). MNRAS 451(3):3237–3248. 10.1093/mnras/stv1201, arXiv:1505.07466 [astro-ph.EP]
  * Winget et al. [1987] Winget D. E., Hansen C. J., Liebert J., et al. (1987): An Independent Method for Determining the Age of the Universe. ApJ 315:L77. 10.1086/184864
  * Wolff et al. [2000] Wolff B., Jordan S., Koester D., et al. (2000): The nature of the DAB white dwarf HS 0209+0832. A&A 361:629–640
  * Xu et al. [2013] Xu S., Jura M., Klein B., et al. (2013): Two Beyond-primitive Extrasolar Planetesimals. ApJ 766(2):132. 10.1088/0004-637X/766/2/132, arXiv:1302.4799 [astro-ph.EP]
  * Xu et al. [2014] Xu S., Jura M., Koester D., et al. (2014): Elemental Compositions of Two Extrasolar Rocky Planetesimals. ApJ 783(2):79. 10.1088/0004-637X/783/2/79, arXiv:1401.4252 [astro-ph.EP]
  * Xu et al. [2017] Xu S., Zuckerman B., Dufour P., et al. (2017): The Chemical Composition of an Extrasolar Kuiper-Belt-Object. ApJ 836(1):L7. 10.3847/2041-8213/836/1/L7, arXiv:1702.02868 [astro-ph.EP]
  * Xu et al. [2019] Xu S., Dufour P., Klein B., et al. (2019): Compositions of Planetary Debris around Dusty White Dwarfs. AJ 158(6):242. 10.3847/1538-3881/ab4cee, arXiv:1910.07197 [astro-ph.SR]
  * York et al. [2000] York D. G., Adelman J., Anderson J.John E., et al. (2000): The Sloan Digital Sky Survey: Technical Summary. AJ 120(3):1579–1587. 10.1086/301513, arXiv:astro-ph/0006396 [astro-ph]
  * Zuckerman & Reid [1998] Zuckerman B., Reid I. N. (1998): Metals in Cool DA White Dwarfs. ApJ 505(2):L143–L146. 10.1086/311608
  * Zuckerman et al. [2003] Zuckerman B., Koester D., Reid I. N., et al. (2003): Metal Lines in DA White Dwarfs. ApJ 596(1):477–495. 10.1086/377492
  * Zuckerman et al. [2007] Zuckerman B., Koester D., Melis C., et al. (2007): The Chemical Composition of an Extrasolar Minor Planet. ApJ 671(1):872–877. 10.1086/522223, arXiv:0708.0198 [astro-ph]
  * Zuckerman et al. [2010] Zuckerman B., Melis C., Klein B., et al. (2010): Ancient Planetary Systems are Orbiting a Large Fraction of White Dwarf Stars. ApJ 722(1):725–736. 10.1088/0004-637X/722/1/725, arXiv:1007.2252 [astro-ph.SR]
  * Zuckerman et al. [2011] Zuckerman B., Koester D., Dufour P., et al. (2011): An Aluminum/Calcium-rich, Iron-poor, White Dwarf Star: Evidence for an Extrasolar Planetary Lithosphere? ApJ 739(2):101. 10.1088/0004-637X/739/2/101, arXiv:1107.2167 [astro-ph.SR]