Additional evolutionary stellar models with core overshooting and mass loss - Apsidal motion constants

Details Additional evolutionary stellar models with core overshooting and mass loss - Apsidal motion constants Additional evolutionary stellar models with core overshooting and mass loss - Apsidal motion constants

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26as...91..217c&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 91, no. 2, Dec. 1991, p. 217-227. Research supported by CICY

Astronomy and Astrophysics

Astrophysics

7

Stellar Composition, Stellar Cores, Stellar Evolution, Stellar Mass Ejection, Stellar Models, Stellar Motions, Apsides, Chemical Composition, Tables (Data)

Scientific paper

New model calculations, taking core overshooting and mass loss into account, are performed in order to extend the range of available chemical compositions and masses of a previously published grid of stellar evolutionary models used to analyze apsidal motion observations (Claret and Gimenez, 1991). Four additional chemical compositions were adopted apart from the standard solar composition (X, Z) - (0.70, 0.02). The calculations are extended for the standard model (Claret and Gimenez, 1989), as well as for the nonstandard one with solar composition (Claret and Gimenez, 1991), up to values of log M - 1.6 in order to allow a straightforward comparison between observational data and theoretical models of massive binaries showing apsidal motion variations and also to permit the study of the effect of adopting different initial chemical compositions. Recent opacity tables from Los Alamos as well as revised rates of nuclear burning are used, and the stellar structure constants are computed for all the models presented.

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