The early nucleosynthesis of O and Fe

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

(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.

Fecha de publicación:
8
1990
Número de autores
3
Número de autores del IAC
0
Número de citas
1
Número de citas referidas
1
Descripción
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.
Tipo
Sin árbitro
Evolución estelar
Ondas gravitacionales
Via Láctea
Formación estelar
Supernovas
Estrellas enanas blancas
Estrellas Wolf-Rayet

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