Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jrasc..77..142h&link_type=abstract
Journal of the Royal Astronomical Society of Canada (ISSN 0035-872X), vol. 77, June 1983, p. 142-146. Research supported by the
Astronomy and Astrophysics
Astronomy
2
B Stars, Binary Stars, Line Spectra, Orbital Elements, Stellar Spectrophotometry, Radial Velocity, Spectrographs, Stellar Evolution
Scientific paper
The radial velocity of HD28475 = HR1420 was first measured by Hube (1970) who identified the star as a binary system. Independent spectrographic observations were made by Wolff (1978) who recognized the star as a double-lined system. The published radial velocities have been combined with additional observational data to obtain a solution for the orbital elements. It is found that HD28475 consists of two nearly identical stars of spectral type B5. A mass of 6.4 solar masses is assumed for the primary on the basis of data reported by Allen (1976). When this value is combined with the appropriate data obtained in connection with the studies of the spectroscopic orbital elements of HD28475, an orbital inclination of 54 deg and a separation of 3.8 x 10 to the 7th km, or 55 solar radii is found. The system is, therefore, completely detached.
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