Statistics – Computation
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...410...99b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 410, no. 1, p. 99-109.
Statistics
Computation
49
Magellanic Clouds, Massive Stars, Star Clusters, Stellar Models, Supergiant Stars, Metallicity, Stellar Evolution, Stellar Interiors
Scientific paper
We extend previous evolutionary computations of intermediate-mass stars to the range of massive star models. The computations have been performed for a fine grid of metallicities covering the range Z = 0.002-0.02, i.e., for a range of metallicity which appears suitable for evolving stars in young Magellanic Clouds globular clusters. Selected stellar models up to 20 solar masses have been followed from the ZAMS through both the H-burning and He-burning phases till the final exhaustion of central He. The assumptions affecting the theory of massive stars are discussed, producing evidences supporting the adopted evolutionary scenario. The correlation between the star metallicity and the occurrence of blue loops during the central He burning phase is discussed, showing how star metallicity can tune the red-to-blue number ratio of He burning supergiants.
Brocato Enzo
Castellani Vittorio
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