Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26as...41..255o&link_type=abstract
Astronomy and Astrophysics Supplement Series, vol. 41, Aug. 1980, p.255-270.
Astronomy and Astrophysics
Astrophysics
19
Binary Stars, Stellar Evolution, Stellar Spectrophotometry, Ubv Spectra, Visual Photometry, Main Sequence Stars, Stellar Magnitude, Stellar Temperature
Scientific paper
Visual magnitudes and color indices b-y, m1, c1 and beta have been obtained for the members of 39 double or multiple systems containing stars with magnitudes greater than 4m. Relationships between stellar ages, spectral types and photometric indices are given from a sample of about 3,500 stars. Data is presented with regard to MK spectral types, the separation, and absolute magnitudes; also tabulated are the mean values of photometric unreddened indices with their standard deviation for intervals of 0.2 in log age. From calculations for each binary of the relative difference in the ages of the components and the difference in the effective temperatures, an increase in the relative differences in ages with the differences in temperatures is noted.
Chareton M.
Oblak Edouard
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