Primary nitrogen production at low Z |
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| Authors: | Georges Meynet |
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| Institution: | (1) WE/OBSS, Brussels Free University (VUB), Pleinlaan 2, B-1050 Brussels, Belgium;(2) Harvard College Observatory, Cambridge, MA 21210, USA;(3) Lick Observatory, University of California, Santa Cruz, CA, 94065, USA;(4) Münster University, Germany |
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| Abstract: | Stellar models with axial rotation and very low metallicity Z, typical of the early star generations have been computed. These
models account for the effects of rotation in the same way as previous grids which successfully reproduce the He- and N-enrichments
observed at the surface of massive stars, and also the high numbers of red supergiants observed in low Z galaxies (Meynet and Maeder, 2000; Maeder and Meynet, 2001). At very low metallicity (Z = 0.00001, i.e. one two thousandth of the solar metallicity),these models naturally lead to the production of primary nitrogen.
This revised version was published online in September 2006 with corrections to the Cover Date. |
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| Keywords: | Stars: individual: V605 Aql (N Aql No 4 (1919)) V4334 Sgr (Sakurai's object) post-AGB evolution final He flash objects photometry |
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