First grids of low-mass stellar models and isochrones with self-consistent treatment of rotation From 0.2 to 1.5 M⊙ at seven metallicities from PMS to TAMS

被引:110
作者
Amard, L. [1 ,2 ,3 ]
Palacios, A. [2 ]
Charbonnel, C. [1 ,4 ,5 ]
Gallet, F. [1 ,6 ]
Georgy, C. [1 ]
Lagarde, N. [7 ]
Siess, L. [8 ]
机构
[1] Univ Geneva, Dept Astron, Chemin Maillettes 51, CH-1290 Versoix, Switzerland
[2] Univ Montpellier, LUPM UMR 5299, CNRS, UM, CC 72, F-34095 Montpellier 05, France
[3] Univ Exeter, Dept Phys & Astron, Stoker Rd, Exeter EX4 4QL, Devon, England
[4] CNRS, IRAP, UMR 5277, 14 Av E Belin, F-31400 Toulouse, France
[5] Univ Toulouse, 14 Av E Belin, F-31400 Toulouse, France
[6] Univ Grenoble Alpes, IPAG, CNRS, F-38000 Grenoble, France
[7] Univ Bourgogne Franche Comte, OSU THETA Franche Comte Bourgogne, Inst UTINAM, CNRS,UMR 6213,Observ Besancon, BP 1615, F-25010 Besancon, France
[8] Univ Libre Bruxelles, Inst Astron & Astrophys, CP226,Blvd Triomphe, B-1050 Brussels, Belgium
基金
欧洲研究理事会;
关键词
stars: evolution; stars: rotation; stars: low-mass; stars: pre-main sequence; PRE-MAIN-SEQUENCE; ANGULAR-MOMENTUM LOSS; EQUATION-OF-STATE; SURFACE MAGNETIC-FIELDS; SOLAR-TYPE STARS; AGB STARS; INTERNAL-ROTATION; GRAVITY-WAVES; EVOLUTION; WINDS;
D O I
10.1051/0004-6361/201935160
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Aims. We present an extended grid of state-of-the art stellar models for low-mass stars including updated physics (nuclear reaction rates, surface boundary condition, mass-loss rate, angular momentum transport, rotation-induced mixing, and torque prescriptions). We evaluate the impact of wind braking, realistic atmospheric treatment, rotation, and rotation-induced mixing on the structural and rotational evolution from the pre-main sequence (PMS) to the turn-off. Methods. Using the STAREVOL code, we provide an updated PMS grid. We computed stellar models for seven different metallicities, from [Fe/H] = 1 dex to [Fe/H] = +0.3 dex with a solar composition corresponding to Z = 0.0134. The initial stellar mass ranges from 0.2 to 1.5 M with extra grid refinement around one solar mass. We also provide rotating models for three different initial rotation rates (slow, median, and fast) with prescriptions for the wind braking and disc-coupling timescale calibrated on observed properties of young open clusters. The rotational mixing includes the most recent description of the turbulence anisotropy in stably stratified regions. Results. The overall behaviour of our models at solar metallicity, and their constitutive physics, are validated through a detailed comparison with a variety of distributed evolutionary tracks. The main differences arise from the choice of surface boundary conditions and initial solar composition. The models including rotation with our prescription for angular momentum extraction and self-consistent formalism for angular momentum transport are able to reproduce the rotation period distribution observed in young open clusters over a wide range of mass values. These models are publicly available and can be used to analyse data coming from present and forthcoming asteroseismic and spectroscopic surveys such as Gaia, TESS, and PLATO.
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页数:21
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