Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26as...48..165o&link_type=abstract
Astronomy and Astrophysics Supplement Series, vol. 48, May 1982, p. 165-218.
Astronomy and Astrophysics
Astrophysics
20
Binary Stars, Main Sequence Stars, Stellar Evolution, Stellar Magnitude, Stellar Spectrophotometry, Visual Photometry, Electrophotometers, Metallic Stars, Stellar Luminosity, Stellar Mass
Scientific paper
Individual absolute visual magnitudes M(v) are derived for intrinsically bright stars and evolved stars. The results are collected for 106 objects believed to be members of binary systems. uvby-beta photometry was empirically calibrated in terms of M(v) for main sequence stars and photoelectrically determined apparent magnitudes. The derived M(v) values are not significantly different from those stated in the Wilson catalogue (1976). Binary systems with main sequence primaries and secondary components off the main sequence were also investigated. Several systems in which at least one component may be in the pre-main sequence contraction stage are pointed out. A wide variety of comments and derived data are given individually for 136 double stars, including metallicities, distance moduli, and masses.
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