Astronomy and Astrophysics – Astronomy
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.226..249h&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 226, May 1, 1987, p. 249-256.
Astronomy and Astrophysics
Astronomy
13
Binary Stars, O Stars, Stellar Evolution, Stellar Orbits, Subdwarf Stars, Astronomical Models, Stellar Mass, Stellar Spectra, Stellar Winds
Scientific paper
HD 128220 is a double-lined binary containing a subdwarf O star. A new orbital solution is presented, based principally on IUE spectroscopy. The implications of the solution for the physical parameters of the subdwarf are discussed, with the results that MOsin3i = 1.6±0.7 M_sun;; ROsin3/2i = 1.2±0.4 R_sun;; and log(LOsin3i/L_sun;) = 3.6±0.3.
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