Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...125..302g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 125, no. 2, Sept. 1983, p. 302-307.
Astronomy and Astrophysics
Astrophysics
3
Binary Stars, Cepheid Variables, Dwarf Stars, Stellar Evolution, Apsides, Astrometry, Chemical Composition, Hertzsprung-Russell Diagram, Mass To Light Ratios, Orbital Elements, Stellar Spectrophotometry
Scientific paper
Physical quantities for the massive components of β Sco A, the brightest member of the multiple system β Sco, are calculated on the basis of the spectroscopic orbit elements and of the photometric measurements carried out when the system underwent occultations. The age of the system is determined by using Stother's (1972) evolutionary models. The stars of the Upper Scorpius complex (to which β Sco belongs), that are earlier than (B-V)0 = -0.20, agree with the same value of the age (log t ranging from 6.7 and 6.8, t in years), but later stars appear to be older. An analysis of the various data used supports the value of 170 pc as the mean distance to Upper Scorpius.
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