Determination of Nucleosynthetic Yields of Supernovae and Very Massive Stars from Abundances in Metal‐Poor Stars
نویسندگان
چکیده
منابع مشابه
Chemical Abundances and Yields from Massive Stars
Stellar rotation produces an internal mixing of the elements due to shear instability and meridional circulation. This leads to observable N/C enhancements in massive stars above about 7–9 M⊙. Rotation also favours mass loss by stellar winds. Mass loss effects dominate for masses above 30 M⊙, while mixing dominates below that limit. The effects of mixing are also much larger at lower metallicit...
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Very massive primordial stars (140 M < M < 260 M ) are supposed to end their lives as pair-instability supernovae. Such an event can be traced by a typical chemical signature in low metallicity stars, but at the present time, this signature is lacking in the extremely metal-poor stars we are able to observe. Does it mean that those very massive objects did not form, contrarily to the primordial...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2002
ISSN: 0004-637X,1538-4357
DOI: 10.1086/338277