Theoretical models of Cepheid variables and their BVI(c) colors and magnitudes

Abstract

view Abstract Citations (161) References (48) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Theoretical Models of Cepheid Variables and Their BVI C Colors and Magnitudes Chiosi, C. ; Wood, P. R. ; Capitanio, N. Abstract Pulsation models for Cepheid variables have been constructed and used to derive PMR and associated relations and the positions of the instability strips. Theoretical quantities have been transformed into observational UBVR(c)I(c) magnitudes and colors. The instability strips for three modes of pulsation have been obtained, and analytical fits to the effective temperature and luminosity along the blue and red edges of the instability strips are presented. The use of new Cepheid models and of the mass-period-luminosity-color relations leads to a good determination of the pulsational mass of the Cepheid stars. The problem of mass discrepancy can likely be solved by the adoption of mild-to-large overshoot models to derive the evolutionary mass. It is suggested that abundance-dependent studies that rely on B-V as a color should be treated with caution. It is recommended that V-I be used as a color. Publication: The Astrophysical Journal Supplement Series Pub Date: June 1993 DOI: 10.1086/191790 Bibcode: 1993ApJS...86..541C Keywords: Cepheid Variables; Stellar Color; Stellar Luminosity; Stellar Magnitude; Stellar Mass; Stellar Oscillations; Bolometers; Magellanic Clouds; Stellar Interiors; Astrophysics; STARS: INTERIORS; STARS: OSCILLATIONS; STARS: VARIABLES: CEPHEIDS full text sources ADS | data products SIMBAD (3)