Stellar yields in CNO from rotating stellar models

Details Stellar yields in CNO from rotating stellar models Stellar yields in CNO from rotating stellar models

2003-01-15

arxiv.org/abs/astro-ph/0301288v1

Astronomy and Astrophysics

Astrophysics

9 pages, 7 figures, for proceedings of the conference ``CNO in the Universe'', C. Charbonnel, D. Schaerer and G. Meynet eds.,

Scientific paper

For $^{12}$C and $^{16}$O, rotating models predict in general enhanced yields. At high metallicity, the carbon and oxygen yields from the very high mass stars, which go through a WR phase, are little affected by rotation. For $^{14}$N, rotation allows the production of important amounts of primary nitrogen in {\it intermediate mass stars} at very low metallicity. The process invoked for this production is different, from the classically accepted scenario {\it i.e.} the Hot Bottom Burning (HBB) in Asymptotic Giant Branch (AGB) stars. Rotating models also predict important productions of primary $^{13}$C, $^{17}$O and $^{22}$Ne at very low metallicity.

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