Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.223...79m&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 223, Nov. 1, 1986, p. 79-85.
Astronomy and Astrophysics
Astronomy
B Stars, Binary Stars, Radial Velocity, Stellar Spectra, Stellar Atmospheres, Stellar Evolution, Stellar Orbits, Supergiant Stars
Scientific paper
A spectral- and radial-velocity study of the components of the close visual binary system υ Carinae is presented. The data show that the fainter star of this system is an early B star of spectral type B3 - 4 IV, and that both components are located at a common distance of 400 pc, having a common age of 1.2×107yr. Slightly different radial-velocity values are determined for the members of the system, indicating an eccentric orbit. The authors also find evidence that the supergiant A8 Ib component has an outward expanding atmosphere.
Mandrini Cristina Hemilse
Niemela Virpi S.
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