Abstract
New DA white dwarf models with thick H and He surface layers are presented. Uncertainties in cool WD ages resulting from the lack of opacities in the weakly degenerate regime are estimated at ∼10%. Luminosity functions computed using these DA sequences suggest that the age of the local Galactic disk is in the range 6.5 to 11 Gyr. Phase separation of crystallizing C/O-core models has the potential to add up to ∼20% to the ages of the coolest WDs, but the suggested process by which the matter is redistributed in the core is not sufficiently compelling.
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© 1995 Springer Verlag
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Wood, M.A. (1995). Theoretical white dwarf luminosity functions: DA models. In: Koester, D., Werner, K. (eds) White Dwarfs. Lecture Notes in Physics, vol 443. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-59157-5_171
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DOI: https://doi.org/10.1007/3-540-59157-5_171
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