New full evolutionary sequences of H and He atmosphere massive white dwarf stars using MESA
Abstract
We explore the evolution of hydrogen-rich and hydrogen-deficient white dwarf stars with masses between 1.012 and 1.307 Msun, and initial metallicity of Z=0.02. These sequences are the result of main sequence stars with masses between 8.8 and 11.8 Msun. The simulations were performed with MESA, starting at the zero-age main sequence, through thermally pulsing and mass-loss phases, ending at the white dwarfs cooling sequence. We present reliable chemical profiles for the whole mass range considered, covering the different expected central compositions, i.e. C/O, O/Ne and Ne/O/Mg, and its dependence with the stellar mass. In addition, we present detailed chemical profiles of hybrid C/O-O/Ne core white dwarfs, found in the mass range between 1.024 and 1.15 Msun. We present the initial-to-final mass relation, mass-radius relation, and cooling times considering the effects of atmosphere and core composition.
Keywords
Cite
@article{arxiv.1807.04774,
title = {New full evolutionary sequences of H and He atmosphere massive white dwarf stars using MESA},
author = {G. R. Lauffer and A. D. Romero and S. O. Kepler},
journal= {arXiv preprint arXiv:1807.04774},
year = {2018}
}
Comments
17 pages, 16 figures, 3 tables, accepted for publication in MNRAS. Cooling tracks available at ftp://cdsarc.u-strasbg.fr/pub/cats/J/MNRAS/480/1547