The early nucleosynthesis of O and Fe

Bibcode
1990Ap&SS.170..361A
DOI
10.1007/BF00652693
Abia, C.; Canal, R.; Isern, J.
Bibliographical reference

(IAU, European Regional Astronomy Meeting, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics and Space Science (ISSN 0004-640X), vol. 170, no. 1-2, Aug. 1990, p. 361-365.

Advertised on:
8
1990
Number of authors
3
IAC number of authors
0
Citations
1
Refereed citations
1
Description
The new observational O/Fe vs Fe/H relationship in halo dwarfs is analyzed in terms of a model of chemical evolution for the solar neighborhood. The role of nucleosynthesis prescriptions for SN II and SN I (both Ia and Ib) is analyzed. It is shown that, by adopting iron yields for SN II according to the observations of SN 1987A and by assuming double degenerate systems to be the progenitors of SN Ia and Wolf-Rayet stars to be the progenitors of SN Ib, it is possible to reproduce quite well the behavior of the O/Fe ratio for halo and disk stars. Nevertheless, best agreement is obtained when introducing in addition a variable IMF during the halo evolution.
Type
Non-refereed
Stellar evolution
Gravitational waves
Milky Way Galaxy
Star formation
Supernovae
White dwarf stars
Wolf-Rayet stars

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