Stellar models and isochrones from low-mass to massive stars including pre-main sequence phase with accretion

Article Article scientifique Article Stellar models and isochrones from low-mass to massive stars including pre-main sequence phase with accretion eng 2019-04-25 2019-04-25 author Haemmerle Lionel 582194 author Eggenberger Patrick 504578 Département d'astronomie (ASTRO) author Ekström Sylvia 0000-0002-2564-5660 514725 Département d'astronomie (ASTRO) author Georgy Cyril 0000-0003-2362-4089 540258 Département d'astronomie (ASTRO) author Meynet Georges 22422 Département d'astronomie (ASTRO) author Postel Andreas 854775 author Audard Marc 0000-0003-4721-034X 646393 Département d'astronomie (ASTRO) author Sorensen Peter 505871 author Fragkos Anastasios 0000-0003-1474-1523 826418 Département d'astronomie (ASTRO) A137 10.1051/0004-6361/201935051 0004-6361 https://www.aanda.org/10.1051/0004-6361/201935051 Grids of stellar models are useful tools to derive the properties of stellar clusters, in particular young clusters hosting massive stars, and to provide information on the star formation process in various mass ranges. Because of their short evolutionary timescale, massive stars end their life while their low-mass siblings are still on the pre-main sequence (pre-MS) phase. Thus the study of young clusters requires consistent consideration of all the phases of stellar evolution. But despite the large number of grids that are available in the literature, a grid accounting for the evolution from the pre-MS accretion phase to the post-MS phase in the whole stellar mass range is still lacking. We build a grid of stellar models at solar metallicity with masses from 0.8 M⊙ to 120 M⊙, including pre-MS phase with accretion. We use the GENEC code to run stellar models on this mass range. The accretion law is chosen to match the observations of pre-MS objects on the Hertzsprung-Russell diagram. We describe the evolutionary tracks and isochrones of our models. The grid is connected to previous MS and post-MS grids computed with the same numerical method and physical assumptions, which provides the widest grid in mass and age to date. Stars: formation Stars: massive Stars: evolution Stars: pre-main sequence Stars: protostars Stars: general Dewey 520 26 Département d'astronomie 12 false Astronomy & astrophysics 624 8b62822a-08d9-403b-af61-696af97c8564 Article (Published version) Restricted Article_scientifique_from_crossref.pdf 847876 application/pdf 7ad7ff5dd7a3835ba524e974612665440fb46a364c66eaebf8943342143c5c72 restrictedAccess Faculté des sciences / Département d'astronomie

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Stellar models and isochrones from low-mass to massive stars including pre-main sequence phase with accretion	Astronomy & astrophysics			2019	22	0

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Sorensen, Peter