Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apjs...73....1l&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 73, May 1990, p. 1-20.
Astronomy and Astrophysics
Astrophysics
53
Giant Stars, Star Distribution, Star Formation Rate, Stellar Evolution, Astronomical Models, Galaxies, Solar Neighborhood, Stellar Atmospheres, Supernovae, Wolf-Rayet Stars
Scientific paper
Population synthesis calculations applicable to the massive stellar content in nearby galaxies are presented. Stellar evolution calculations are combined with mass loss, model atmospheres with line blanketing, and a spectral type calibration to compute observable parameters of massive stars as a function of the star formation rate and the initial mass function slope. The number of O stars of given spectral types, the number of W-R stars, supernova rates, and fluxes of ionizing photons are predicted. Important constraints for the theories of stellar atmospheres and stellar evolution can be derived from observations if stellar number counts and ionizing flux data are available.
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