J/MNRAS/480/1547    Full Evolutionary Sequences of Massive WDs  (Lauffer+, 2018)
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New full evolutionary sequences of H- and He-atmosphere massive
white dwarf stars using MESA.
    Lauffer G.R., Romero A.D., Kepler S.O.
    <Mon. Not. R. Astron. Soc. 480, 1547 (2018)>
    =2018MNRAS.480.1547L        (SIMBAD/NED BibCode)
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ADC_Keywords: Models, atmosphere ; Stars, white dwarf
Keywords: methods: numerical - stars: evolution - stars: white dwarfs

Abstract:
    We explore the evolution of hydrogen-rich and hydrogen-deficient white
    dwarf stars with masses between 1.012 and 1.307M_{sun}, and initial
    metallicity of Z=0.02. These sequences are the result of
    main-sequence stars with masses between 8.8 and 11.8M_{sun}. The
    simulations were performed with MESA (Modules for Experiments in
    Stellar Astrophysics), starting at the zero-age main sequence, through
    thermally pulsing and mass-loss phases, ending at the white dwarf
    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 on 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 1.15M_{sun}. We present the initial-to-final mass
    relation, the mass-radius relation and cooling times considering the
    effects of atmosphere and core composition.

Description:
    Set of 16 .dat files with the cooling tracks for all evolutionary
    sequences computed. Which .dat file is named as
    Atmosphere_composition-Mass.dat. For example: H_atm-M1.0124.dat,
    He_atm-M1.22.dat

File Summary:
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 FileName      Lrecl  Records   Explanations
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ReadMe            80        .   This file
table1.dat        60       16   List of evolutionary tracks sequences
tracks/*           .       32   Individual tracks for H and He
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Byte-by-byte Description of file: table1.dat
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   Bytes Format Units   Label        Explanations
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   1-  5  F5.2  Msun    MZAMS        Values of initial mass at ZAMS
   7- 11  F5.3  Msun    MWD          White dwarfs mass
  13- 17  F5.3  ---     mlogMH/MWD   Hydrogen content for H-rich sequence
                                      (-logMH/MWD)
  19- 23  F5.3  ---     mlogMHe/MWD  Helium content for H-rich sequence
                                      (-logMHe/MWD)
  25- 41  A17   ---     NameH        Name of evolutionary tracks sequence with
                                      H atmosphere in subdirectory tracks
  43- 60  A18   ---     NameHe       Name of evolutionary tracks sequence with
                                      He atmosphere in subdirectory tracks
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Byte-by-byte Description of file (#): tracks/*
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   Bytes Format   Units   Label     Explanations
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   1- 18 F18.16   [K]     logTeff   Effective temperature in log scale
  20- 42 F23.20   [Lsun]  logL      Luminosity in log scale
  44- 61 F18.16   [cm/s2] logg      Surface gravity in log scale
  63- 81 F19.16   [Rsun]  logR      Radius in log scale
  83-100 F18.16   Msun    Mass      Mass
 102-123 E22.15   Gyr     Age       Cooling age
 125-144 F20.18   Gyr     AgeTot    Total age
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Acknowledgements:
    Gabriel Lauffer Ramos, gabriel.lauffer(at)ufrgs.br

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(End)       Gabriel Lauffer Ramos [UFRGS], Patricia Vannier [CDS]    24-Sep-2018
