J/A+A/690/A22 Grid of stellar models (Costa+, 2024)
He-enriched STAREVOL models for globular cluster multiple populations.
Self-consistent isochrones from ZAMS to the TP-AGB phase.
Costa G., Dumont T., Lancon A., Palacios A., Charbonnel C., Prugniel P.,
Ekstrom S., Georgy C., Branco V., Coelho P., Martins L., Borisov S.,
Voggel K., Chantereau W.
<Astron. Astrophys. 690, A22 (2024)>
=2024A&A...690A..22C 2024A&A...690A..22C (SIMBAD/NED BibCode)
ADC_Keywords: Models, evolutionary
Keywords: stars: abundances - stars: AGB and post-AGB - stars: evolution -
stars: low-mass - globular clusters: general
Abstract:
A common property of globular clusters (GCs) is to host multiple
populations characterized by peculiar chemical abundances. Recent
photometric studies suggest that the He content could vary between the
populations of a GC by up to ΔHe∼0.13, in mass fraction. The
initial He content impacts the evolution of low-mass stars by
ultimately modifying their lifetimes, luminosity, temperatures, and,
more generally, the morphology of post-red giant branch (RGB)
evolutionary tracks in the Hertzsprung-Russell diagram. We present new
physically accurate isochrones with different initial He enrichments
and metallicities, with a focus on the methods implemented to deal
with the post-RGB phases. The isochrones are based on tracks computed
with the stellar evolution code STAREVOL for different metallicities
(Z = 0.0002, 0.0009, 0.002, and 0.008) and with several He enrichments
(from 0.248 to 0.600 in mass fraction). We describe the effect of He
enrichment on the morphology of the isochrones and we tested these by
comparing the predicted number counts of horizontal branch and
asymptotic giant branch stars with those of selected GCs.
Comparing the number ratios, we find that our new theoretical ones
agree with the observed values within 1σ in most cases. The work
presented here sets the ground for future studies on stellar
populations in GCs, in which the abundances of light elements in
He-enhanced models will rely on different assumptions for the causes
of this enrichment. The developed methodology permits the computation
of isochrones from new stellar tracks with non canonical stellar
processes. The checked number counts ensure that, at least in this
reference set, the contribution of the luminous late stages of stellar
evolution to the integrated light of a GC is represented adequately.
Description:
Grid of isochrones for four metallicities (Z= 0.0002, 0.0009, 0.002,
0.008) with various initial He enrichments (from 0.248 to 0.600 in
mass fraction).
Isochrones are computed from 8Gyr to 14Gyr. For the whole grid, we
provide the usual stellar parameters (luminosity, effective
temperature, lifetimes, ...), together with the central and surface
abundance for all the elements, i.e. from 1H to 37Cl.
Grid of stellar models are computed with standard physical
prescriptions, and are complete from the zero-age main-sequence to the
beginning of the planetary nebula phase. For the whole grid, we
provide the usual stellar parameters (luminosity, effective
temperature, lifetimes, ...), together with the central and surface
abundance for all the elements, i.e. from 1H to 37Cl.
Heavier elements do not change during the evolution; they are
collected in the variable "Heavys" and can be retrieved using the
solar abundance ratios from Grevesse & Noels (1993, in Origin and
Evolution of the Elements, ed. 752 N. Prantzos, E. Vangioni-Flam, & M.
Casse, 15-25).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 90 58 List of grids of isochrones and
grids of stellar models files
isoc/* . 29 Individual grid of isochrones
mod/* . 29 Individual grid of stellar models
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 F6.4 --- Zini Z initial abundance
(0.0002, 0.0009, 0.002 or 0.008)
8- 15 F8.6 --- Yini Y initial abundance (1)
17- 43 A27 --- FileName File Name with isochrones or stellar models
45- 90 A46 --- Title Title of the file
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Note (1): Y initial abundance are 0.248, 0.248415, 0.249, 0.255, 0.260, 0.270,
0.300, 0.330, 0.370, 0.400, 0.425, 0.450 or 0.600.
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Byte-by-byte Description of file (#): isoc/*
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
4- 8 F5.2 Gyr Age Age of the stars
13- 26 F14.12 Msun Mini Initial mass
29- 36 F8.6 --- Zini Initial metallicity
39- 43 F5.3 --- OmOcini Initial rotation
48- 55 F8.6 K logTeff Log10 Effective temperature
57- 65 F9.6 Lsun logL Log10 Surface luminosity
67- 75 F9.6 Lsun logLgrav Log10 gravitational luminosity
79- 94 F16.14 Msun M Current stellar mass
96- 104 F9.5 Rsun R Photospheric radius
106- 110 F5.2 [cm/s2] logg Log10 Photospheric gravity
113- 121 E9.3 g/cm3 rhophot Photospheric density
123- 132 F10.6 [Msun/yr] logMdot Log10 Mass-loss rate
135- 142 F8.6 [K] logTc Log10 central temperature
144- 152 F9.6 [dPa] logPc Log10 central pressure (cgs)
155- 162 F8.6 [g/cm3] logrhoc Log10 central density
165- 172 F8.6 [K] logTmax Log10 maximum of temperature
175- 182 F8.6 Msun MrTmax Mass coordinate of Tmax
185- 192 F8.6 [g/cm3] logrhomax Log10 Density at the location of Tmax
194- 204 E11.4 10-7W/g epsnucl Central total nuclear energy production
rate (in erg/g/s)
206- 216 E11.5 10-7W/g epsgrav Central gravothermal energy production
rate (in erg/g/s)
219- 228 E10.5 10-7W/g epsnu Central plasma neutrino energy loss rate
(in erg/g/s)
231- 239 E9.2 Lsun LH Luminosity associated with H burning
241- 250 F10.6 Lsun LHe Luminosity associated with He burning
253- 261 F9.7 Msun MrbCE Mass at the base of convective envelope
264- 272 E9.4 --- normRbCE Radius at the base of convective envelope
in Rstar unit
275- 281 F7.5 [K] logTb Log10 temperature at the base of the
convective envelope
283- 290 F8.5 [g/cm3] logrhob Log10 density at the base of the
convective envelope
293- 301 F9.7 Msun MrtCC Mass at the top of convective core
304- 313 E10.5 --- normRtCC Radius at the top of convective core
in Rstar unit
315- 321 F7.5 [K] logTt Log10 temperature at the top of
convective core
323- 330 F8.5 [g/cm3] logrhot Log10 density at the top of convective
core
333- 342 E10.5 --- H1s Surface abundance of H (mass fraction)
345- 354 E10.5 --- H2s Surface abundance of 2H (mass fraction)
357- 366 E10.5 --- He3s Surface abundance of 3He (mass fraction)
369- 378 E10.5 --- He4s Surface abundance of 4He (mass fraction)
381- 390 E10.5 --- Li6s Surface abundance of 6Li (mass fraction)
393- 402 E10.5 --- Li7s Surface abundance of 7Li (mass fraction)
405- 414 E10.5 --- Be7s Surface abundance of 7Be (mass fraction)
417- 426 E10.5 --- Be9s Surface abundance of 9Be (mass fraction)
429- 438 E10.5 --- B10s Surface abundance of 10B (mass fraction)
441- 450 E10.5 --- B11s Surface abundance of 11B (mass fraction)
453- 462 E10.5 --- C12s Surface abundance of 12C (mass fraction)
465- 474 E10.5 --- C13s Surface abundance of 13C (mass fraction)
477- 486 E10.5 --- C14s Surface abundance of 14C (mass fraction)
489- 498 E10.5 --- N14s Surface abundance of 14N (mass fraction)
501- 510 E10.5 --- N15s Surface abundance of 15N (mass fraction)
513- 522 E10.5 --- O16s Surface abundance of 16O (mass fraction)
525- 534 E10.5 --- O17s Surface abundance of 17O (mass fraction)
537- 546 E10.5 --- O18s Surface abundance of 18O (mass fraction)
549- 558 E10.5 --- F19s Surface abundance of 19F (mass fraction)
561- 570 E10.5 --- Ne20s Surface abundance of 20Ne (mass fraction)
573- 582 E10.5 --- Ne21s Surface abundance of 21Ne (mass fraction)
585- 594 E10.5 --- Ne22s Surface abundance of 22Ne (mass fraction)
597- 606 E10.5 --- Na23s Surface abundance of 23Na (mass fraction)
609- 618 E10.5 --- Mg24s Surface abundance of 24Mg (mass fraction)
621- 630 E10.5 --- Mg25s Surface abundance of 25Mg (mass fraction)
633- 642 E10.5 --- Mg26s Surface abundance of 26Mg (mass fraction)
645- 654 E10.5 --- Al26s Surface abundance of 26Al (mass fraction)
657- 666 E10.5 --- Al27s Surface abundance of 27Al (mass fraction)
669- 678 E10.5 --- Si28s Surface abundance of 28Si (mass fraction)
681- 690 E10.5 --- Si29s Surface abundance of 29Si (mass fraction)
693- 702 E10.5 --- Si30s Surface abundance of 30Si (mass fraction)
705- 714 E10.5 --- P31s Surface abundance of 31P (mass fraction)
717- 726 E10.5 --- S32s Surface abundance of 32S (mass fraction)
729- 738 E10.5 --- S33s Surface abundance of 33S (mass fraction)
741- 750 E10.5 --- S34s Surface abundance of 34S (mass fraction)
753- 762 E10.5 --- S35s Surface abundance of 35S (mass fraction)
765- 774 E10.5 --- CL35s Surface abundance of 35Cl (mass fraction)
777- 786 E10.5 --- S36s Surface abundance of 36S (mass fraction)
789- 798 E10.5 --- CL36s Surface abundance of 36Cl (mass fraction)
801- 810 E10.5 --- CL37s Surface abundance of 37Cl (mass fraction)
813- 822 E10.5 --- Heavys Surface abundance of Heavys
(mass fraction)
825- 834 E10.5 --- H1c Central abundance of 1H (mass fraction)
837- 846 E10.5 --- H2c Central abundance of 2H (mass fraction)
849- 858 E10.5 --- He3c Central abundance of 3He (mass fraction)
861- 870 E10.5 --- He4c Central abundance of 4He (mass fraction)
873- 882 E10.5 --- C12c Central abundance of 12C (mass fraction)
885- 894 E10.5 --- C13c Central abundance of 13C (mass fraction)
897- 906 E10.5 --- C14c Central abundance of 14C (mass fraction)
909- 918 E10.5 --- N14c Central abundance of 14N (mass fraction)
921- 930 E10.5 --- N15c Central abundance of 15N (mass fraction)
933- 942 E10.5 --- O16c Central abundance of 16O (mass fraction)
945- 954 E10.5 --- O17c Central abundance of 17O (mass fraction)
957- 966 E10.5 --- O18c Central abundance of 18O (mass fraction)
969- 978 E10.5 --- F19c Central abundance of 19F (mass fraction)
981- 990 E10.5 --- Ne20c Central abundance of 20Ne (mass fraction)
993-1002 E10.5 --- Ne21c Central abundance of 21Ne (mass fraction)
1005-1014 E10.5 --- Ne22c Central abundance of 22Ne (mass fraction)
1017-1026 E10.5 --- Na23c Central abundance of 23Na (mass fraction)
1029-1038 E10.5 --- Mg24c Central abundance of 24Mg (mass fraction)
1041-1050 E10.5 --- Mg25c Central abundance of 25Mg (mass fraction)
1053-1062 E10.5 --- Mg26c Central abundance of 26Mg (mass fraction)
1065-1074 E10.5 --- Al26c Central abundance of 26Al (mass fraction)
1077-1086 E10.5 --- Al27c Central abundance of 27Al (mass fraction)
1089-1098 E10.5 --- Si28c Central abundance of 28Si (mass fraction)
--------------------------------------------------------------------------------
Byte-by-byte Description of file (#): mod/*
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
5- 8 F4.2 Msun Mini Initial masses
12- 14 I3 --- Model [1/500] Model number
17- 32 E16.11 yr Time Age
35- 42 F8.6 [K] logTeff Log10 Effective temperature
44- 52 F9.6 [Lsun] logL Log10 Surface luminosity
54- 62 F9.6 [Lsun] logLgrav Log10 gravitational luminosity
67- 76 F10.8 Msun M Current stellar mass
80- 88 F9.5 Rsun R Photospheric radius
90- 94 F5.2 [cm/s2] logg Log10 Photospheric gravity
97- 105 E9.4 g/cm3 rho_phot photospheric density
107- 116 F10.6 [Msun/yr] logMdot Log10 Mass-loss rate
119- 126 F8.6 [K] logTc Log10 central temperature
128- 136 F9.6 [dPa] logPc Log10 central pressure (cgs)
139- 146 F8.6 [g/cm3] logrhoc Log10 central density
149- 156 F8.6 [K] logTmax Log10 maximum of temperature
159- 166 F8.6 Msun MrTmax Mass coordinate of Tmax
169- 176 F8.6 [g/cm3] logrhomax Log10 Density at the location of Tmax
178- 188 E11.5 10-7W/g epsnucl Central total nuclear energy production
rate (in erg/g/s)
190- 200 E11.5 10-7W/g epsgrav Central gravothermal energy production
rate (in erg/g/s)
203- 212 E10.5 10-7W/g epsnu Central plasma neutrino energy loss rate
(in erg/g/s)
215- 223 F9.6 Lsun LH Luminosity associated with H burning
225- 234 F10.6 Lsun LHe Luminosity associated with He burning
237- 245 F9.7 Msun MrbCE Mass at the base of convective envelope
248- 256 E9.5 ----- normRbCE Radius at the base of convective envelope
in Rstar unit
259- 265 F7.5 [K] logTb Log10 temperature at the base of the
convective envelope
267- 274 F8.5 [g/cm3] logrhob Log10 density at the base of the
convective envelope
277- 285 F9.7 Msun MrtCC Mass at the top of convective core
288- 296 E9.4 --- normRtCC Radius at the top of convective core
in Rstar unit
299- 305 F7.5 [K] logTt Log10 temperature at the top of convective
core
307- 314 F8.5 [g/cm3] logrhot Log10 density at the top of convective
core
317- 326 E10.5 --- H1s Surface abundance of H (mass fraction)
329- 338 E10.5 --- H2s Surface abundance of 2H (mass fraction)
341- 350 E10.5 --- He3s Surface abundance of 3He (mass fraction)
353- 362 E10.5 --- He4s Surface abundance of 4He (mass fraction)
365- 374 E10.5 --- Li6s Surface abundance of 6Li (mass fraction)
377- 386 E10.5 --- Li7s Surface abundance of 7Li (mass fraction)
389- 398 E10.5 --- Be7s Surface abundance of 7Be (mass fraction)
401- 410 E10.5 --- Be9s Surface abundance of 9Be (mass fraction)
413- 422 E10.5 --- B10s Surface abundance of 10B (mass fraction)
425- 434 E10.5 --- B11s Surface abundance of 11B (mass fraction)
437- 446 E10.5 --- C12s Surface abundance of 12C (mass fraction)
449- 458 E10.5 --- C13s Surface abundance of 13C (mass fraction)
461- 470 E10.5 --- C14s Surface abundance of 14C (mass fraction)
473- 482 E10.5 --- N14s Surface abundance of 14N (mass fraction)
485- 494 E10.5 --- N15s Surface abundance of 15N (mass fraction)
497- 506 E10.5 --- O16s Surface abundance of 16O (mass fraction)
509- 518 E10.5 --- O17s Surface abundance of 17O (mass fraction)
521- 530 E10.5 --- O18s Surface abundance of 18O (mass fraction)
533- 542 E10.5 --- F19s Surface abundance of 19F (mass fraction)
545- 554 E10.5 --- Ne20s Surface abundance of 20Ne (mass fraction)
557- 566 E10.5 --- Ne21s Surface abundance of 21Ne (mass fraction)
569- 578 E10.5 --- Ne22s Surface abundance of 22Ne (mass fraction)
581- 590 E10.5 --- Na23s Surface abundance of 23Na (mass fraction)
593- 602 E10.5 --- Mg24s Surface abundance of 24Mg (mass fraction)
605- 614 E10.5 --- Mg25s Surface abundance of 25Mg (mass fraction)
617- 626 E10.5 --- Mg26s Surface abundance of 26Mg (mass fraction)
629- 638 E10.5 --- Al26s Surface abundance of 26Al (mass fraction)
641- 650 E10.5 --- Al27s Surface abundance of 27Al (mass fraction)
653- 662 E10.5 --- Si28s Surface abundance of 28Si (mass fraction)
665- 674 E10.5 --- Si29s Surface abundance of 29Si (mass fraction)
677- 686 E10.5 --- Si30s Surface abundance of 30Si (mass fraction)
689- 698 E10.5 --- P31s Surface abundance of 31P (mass fraction)
701- 710 E10.5 --- S32s Surface abundance of 32S (mass fraction)
713- 722 E10.5 --- S33s Surface abundance of 33S (mass fraction)
725- 734 E10.5 --- S34s Surface abundance of 34S (mass fraction)
737- 746 E10.5 --- S35s Surface abundance of 35S (mass fraction)
749- 758 E10.5 --- CL35s Surface abundance of 35Cl (mass fraction)
761- 770 E10.5 --- S36s Surface abundance of 36S (mass fraction)
773- 782 E10.5 --- CL36s Surface abundance of 36Cl (mass fraction)
785- 794 E10.5 --- CL37s Surface abundance of 37Cl (mass fraction)
797- 806 E10.5 --- Heavys Surface abundance of Heavys
(mass fraction)
809- 818 E10.5 --- H1c Central abundance of 1H (mass fraction)
821- 830 E10.5 --- H2c Central abundance of 2H (mass fraction)
833- 842 E10.5 --- He3c Central abundance of 3He (mass fraction)
845- 854 E10.5 --- He4c Central abundance of 4He (mass fraction)
857- 866 E10.5 --- C12c Central abundance of 12C (mass fraction)
869- 878 E10.5 --- C13c Central abundance of 13C (mass fraction)
881- 890 E10.5 --- C14c Central abundance of 14C (mass fraction)
893- 902 E10.5 --- N14c Central abundance of 14N (mass fraction)
905- 914 E10.5 --- N15c Central abundance of 15N (mass fraction)
917- 926 E10.5 --- O16c Central abundance of 16O (mass fraction)
929- 938 E10.5 --- O17c Central abundance of 17O (mass fraction)
941- 950 E10.5 --- O18c Central abundance of 18O (mass fraction)
953- 962 E10.5 --- F19c Central abundance of 19F (mass fraction)
965- 974 E10.5 --- Ne20c Central abundance of 20Ne (mass fraction)
977- 986 E10.5 --- Ne21c Central abundance of 21Ne (mass fraction)
989- 998 E10.5 --- Ne22c Central abundance of 22Ne (mass fraction)
1001-1010 E10.5 --- Na23c Central abundance of 23Na (mass fraction)
1013-1022 E10.5 --- Mg24c Central abundance of 24Mg (mass fraction)
1025-1034 E10.5 --- Mg25c Central abundance of 25Mg (mass fraction)
1037-1046 E10.5 --- Mg26c Central abundance of 26Mg (mass fraction)
1049-1058 E10.5 --- Al26c Central abundance of 26Al (mass fraction)
1061-1070 E10.5 --- Al27c Central abundance of 27Al (mass fraction)
1073-1082 E10.5 --- Si28c Central abundance of 28Si (mass fraction)
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Acknowledgements:
Guglielmo Costa, guglielmo.costa.astro(at)gmail.com
This work was supported by the Agence Nationale de la Recherche grant
POPSYCLE number ANR-19-CE31-0022.
References:
Chantereau, Charbonnel & Decressin, 2015A&A...578A.117C 2015A&A...578A.117C
Charbonnel & Chantereau, 2016A&A...586A..21C 2016A&A...586A..21C
Chantereau, Charbonnel & Meynet, 2016A&A...592A.111C 2016A&A...592A.111C, Cat. J/A+A/592/A111
Chantereau, Charbonnel & Meynet, 2017A&A...602A..13C 2017A&A...602A..13C
Martins, Chantereau & Charbonnel, 2021A&A...650A.162M 2021A&A...650A.162M
(End) Patricia Vannier [CDS] 17-Sep-2024