A-type stars: evolution, rotation and binarity

Details A-type stars: evolution, rotation and binarity A-type stars: evolution, rotation and binarity

2004-10-29

arxiv.org/abs/astro-ph/0410730v1

Astronomy and Astrophysics

Astrophysics

11 pages, 7 figures, conference: The A-star Puzzle, IAU Simp. 224, 2004

Scientific paper

10.1017/S1743921304004375

We discuss the internal structure of stars in the mass range 1.5 to 4 M_sun from the PMS to the subgiant phase with a particular emphasis on the convective core and the convective superficial layers. Different physical aspects are considered such as overshooting, treatment of convection, microscopic diffusion and rotation. Their influence on the internal structure and on the photospheric chemical abundances is briefly described. The role of binarity in determining the observed properties and as a tool to constrain the internal structure is also introduced and the current limits of theories of orbital evolution and of available binary data--sets are discussed. keywords{stars: evolution, stars: binaries: general, stars: rotation}

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