The relationship between stellar visual surface brightness and colour

Details The relationship between stellar visual surface brightness and colour The relationship between stellar visual surface brightness and colour

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.191..435b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 191, May 1980, p. 435-444. NSF-supported research.

Astronomy and Astrophysics

Astronomy

17

Atmospheric Models, Brightness Temperature, Giant Stars, Stellar Luminosity, Stellar Spectra, Abundance, Gravitational Effects, Hertzsprung-Russell Diagram, Stellar Atmospheres, Stellar Models

Scientific paper

Synthetic stellar spectra, computed for model stellar atmospheres for giant stars and for a Vega model, are used to study the dependence of stellar visual surface brightness (FV) on colour. The models show that while the basic relationship is a thermal one, metal abundance effects do occur in the FV-(B-V), FV-(V-R) and FV-(R-I) diagrams and gravity effects occur in the FV-(B-V) diagram. The combined effects of metal abundance and gravity are smallest in the FV-(V-R) diagram and the relationship between FV and (V-R) agrees with that found observationally by Barnes and Evans.

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