Statistics – Computation
Scientific paper
Oct 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apjs...74..463c&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 74, Oct. 1990, p. 463-499.
Statistics
Computation
72
Globular Clusters, Helium, Hydrogen, Nuclear Astrophysics, Stellar Evolution, Stellar Mass, Computational Astrophysics, Hertzsprung-Russell Diagram, Stellar Luminosity, Stellar Models
Scientific paper
This paper presents a grid of evolutionary computations covering the major phases of H and He burning for stars having masses between 3 and 9 solar masses. The computations have been performed for two different assumptions on the amount of original helium (Y = 0.23 and 0.27) and for the three values of the metallicity Z = 0.02, 0.006, and 0.002. All the evolutionary tracks have been computed from the main-sequence phase up to the carbon ignition or to the reignition of the H shell which marks the start of the thermally pulsating phase. Comparison is made with the results of previous investigations, discussing the origin of some relevant variations. Extensive tabulations of the evolutionary results are reported and shortly discussed. The starting luminosity of thermal pulses has been identified for 23 models which do not ignite carbon, supporting previous evaluations of this parameter given in the literature.
Castellani Vittorio
Chieffi Alessandro
Straniero Oscar
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