1. Helium and metal diffusion in the Sun and in cluster stars
- Author
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Scilla Degl'Innocenti
- Subjects
Physics ,Metallicity ,Stellar collision ,Astronomy ,Astronomy and Astrophysics ,Astrophysics ,Horizontal branch ,Blue straggler ,T Tauri star ,Stars ,Star cluster ,Space and Planetary Science ,Stellar dynamics ,Astrophysics::Solar and Stellar Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,Astrophysics::Galaxy Astrophysics - Abstract
In this contribution I will review the present knowledge about helium and metal diffusion efficiency in the Sun and in old cluster stars and the influence of the uncertainties still present on these mechanisms concerning the stellar characteristics in different evolutionary phases. I will also discuss the relevance of the current uncertainties on the assumed chemical composition for the main evolutionary features of population II stars.
- Published
- 2010
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