Grids of stellar models V. (Meynet+ 1994)

Details Grids of stellar models V. (Meynet+ 1994) Grids of stellar models V. (Meynet+ 1994)

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ycat..41030097m&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/103/97. Originally published in: 1994A&AS..103...97M

Computer Science

Models: Evolutionary, Mass Loss, Hr Diagrams

Scientific paper

Most outputs of massive star evolution critically depend on the mass loss rates. In order to broaden the comparison basis and to illustrate the effects of different mass loss rates, we have computed new sets of models, with initial masses between 12 and 120 M&sun;, and metallicities, Z, between 0.001 and 0.040, with a mass loss rate increased by a factor of two during the phases when the stellar winds are believed to be essentially driven by the radiation pressure. A moderate core-overshooting and the new radiative opacities from Iglesias et al. (1992ApJ...397..717I) and Kurucz (1991) were taken into account. These models complete the homogeneous and extended theoretical database formed by the previous grids of this series, computed by Schaller et al. (1992, Cat. J/A+AS/96/269) for Z=0.020 and Z=0.001, by Schaerer et al. (1992, Cat. J/A+AS/98/523; 1993, Cat. J/A+AS/102/339) for Z=0.008 and Z=0.040 and by Charbonnel et al. (1993, Cat. J/A+AS/101/415) for Z=0.004. This paper closes this series. Of particular interest is the predicted behaviour of metal rich stars such as may be found in the inner regions of our Galaxy. New evolutionary connexions are found, in particular we show that the most massive and metal rich stars may spend a relatively long time as He and N enriched stars and may even end their evolution as white dwarfs.
(33 data files).

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