Statistics – Computation
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apjs...58..711v&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 58, Aug. 1985, p. 711-769.
Statistics
Computation
561
Abundance, Iron, Metallicity, Star Clusters, Stellar Evolution, Stellar Mass, Stellar Models, Color-Magnitude Diagram, Computational Astrophysics, Hydrogen, Interstellar Extinction, Milky Way Galaxy, Nuclear Reactions, Open Clusters, Pleiades Cluster, Praesepe Star Clusters, Stellar Interiors, Tables (Data)
Scientific paper
Post-main sequence tracks for 18 masses in the mass/solar mass range between 0.7 and 3.0 have been computed for each of five metal abundances. All of the calculations assumed an initial helium content of 0.25 and a value of 1.6 for the usual mixing-length parameter. The latest Los Alamos opacities, which have important ramifications for predicted mass-luminosity relations, were utilized. Isochrones for ages ranging from 300 million to 15 billion yr were calculated for each grid and transposed to the (Mv, B-V) plane using model atmospheres. The latter are also used to provide boundary conditions for stellar interior calculations. The isochrones were compared to relevant synthetic C-M diagrams of the Pleiades. Praesepe, M67, NGC 188, and NGC 2420 open clusters to check the accuracy of the calculations. The agreement was generally found to be good.
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