Grids of evolutionary models of massive stars with mass loss and overshooting - Properties of Wolf-Rayet stars sensitive to overshooting

Details Grids of evolutionary models of massive stars with mass loss and overshooting - Properties of Wolf-Rayet stars sensitive to overshooting Grids of evolutionary models of massive stars with mass loss and overshooting - Properties of Wolf-Rayet stars sensitive to overshooting

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...182..243m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 182, no. 2, Aug. 1987, p. 243-263.

Statistics

Computation

358

Computational Grids, Stellar Evolution, Stellar Mass Accretion, Stellar Mass Ejection, Stellar Models, Wolf-Rayet Stars, Abundance, Convective Flow, Hertzsprung-Russell Diagram, Mass Flow Rate, Stellar Structure, Supergiant Stars

Scientific paper

An attempt is made to establish a reference grid of massive star models, following the evolution of stars whose initial mass is 120, 85, 69, 40, 25, 20, and 15 solar masses from the zero-age sequence to the end of the C-burning phase. The overshooting parameter chosen, together with the extent and mass loss rates adopted, generates an MS narrowing for O-stars and a large MS widening for early B-type stars. When compared to other sets of models, the present results allow the identification of several novel observable properties that are sensitive to overshooting for a given mass loss: (1) the mapping of surface C/N and O/N ratios for stars in the upper HR diagram, (2) the mass limits for red supergiants and W-R stars, and (3) the slope of the mass-luminosity relation for W-R stars.

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