Grids of stellar models including second harmonic and colors: Solar composition (Z = 0.0172, X = 0.7024)

Küçük Resim Yok

Tarih

2015

Yazarlar

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Institute of Physics Publishing

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

Grids of stellar evolution are required in many fields of astronomy/ astrophysics, such as planet hosting stars, binaries, clusters, chemically peculiar stars, etc. In this study, a grid of stellar evolution models with updated ingredients and recently determined solar abundances is presented. The solar values for the initial abundances of hydrogen, heavy elements and mixing-length parameter are 0.0172, 0.7024 and 1.98, respectively. The mass step is small enough (0.01 M?) that interpolation for a given star mass is not required. The range of stellar mass is 0.74 to 10.00 M?. We present results in different forms of tables for easy and general application. The second stellar harmonic, required for analysis of apsidal motion of eclipsing binaries, is also listed. We also construct rotating models to determine the effect of rotation on stellar structure and derive fitting formulae for luminosity, radius and the second harmonic as a function of rotational parameter. We also compute and list colors and bolometric corrections ofmodels required for transformation between theoretical and observational results. The results are tested for the Sun, the Hyades cluster, the slowly rotating chemically peculiar Am stars and eclipsing binaries with apsidal motion. The theoretical and observational results along isochrones are in good agreement. The grids are also applicable to rotating stars provided that equatorial velocity is given. © 2015 National Astronomical Observatories, Chinese Academy of Sciences and IOP Publishing Ltd.

Açıklama

Anahtar Kelimeler

Binaries: eclipsing, Stars: chemically peculiar, Stars: evolution, Stars: interior

Kaynak

Research in Astronomy and Astrophysics

WoS Q Değeri

Scopus Q Değeri

Q2

Cilt

15

Sayı

12

Künye