Evolution and seismology of Procyon
1993; IOP Publishing; Volume: 405; Linguagem: Inglês
10.1086/172362
ISSN1538-4357
Autores Tópico(s)Geophysics and Gravity Measurements
Resumoview Abstract Citations (42) References (33) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Evolution and Seismology of Procyon Guenther, D. B. ; Demarque, P. Abstract We have calculated an array of stellar models for Procyon A that are based on the best physics available to us, including the latest opacities and nuclear cross sections. The array of models spans the error space centered on Procyon's mass, chemical composition, effective temperature, and luminosity. We find that with OPAL opacities no convective overshoot is needed at the edge of the convective core to match Procyon's position in the H-R diagram. We discuss the discrepancy between the astrophysical mass and the astrometric mass, which is reduced by the more up-to-date physics in the models, and describe how oscillation data can be used to distinguish among the possible models and help resolve the discrepancy. We have calculated oscillation frequencies for the l = 0, 1, 2, and 3 p-modes and oscillation periods for the l = 1, 2, and 3 g-modes for several of these models. Publication: The Astrophysical Journal Pub Date: March 1993 DOI: 10.1086/172362 Bibcode: 1993ApJ...405..298G Keywords: F Stars; Stellar Evolution; Stellar Models; Stellar Oscillations; Stellar Physics; Opacity; Stellar Composition; Stellar Convection; Stellar Envelopes; Stellar Interiors; Stellar Mass; Astrophysics full text sources ADS | data products SIMBAD (3)
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