Optical and ultraviolet spectroscopy of three F + B binary stars

Details Optical and ultraviolet spectroscopy of three F + B binary stars Optical and ultraviolet spectroscopy of three F + B binary stars

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103..444b&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 103, May 1991, p. 444-451.

Astronomy and Astrophysics

Astronomy

1

B Stars, Binary Stars, F Stars, Ultraviolet Spectroscopy, Emission Spectra, H Alpha Line, Iue, Stellar Luminosity

Scientific paper

Optical and ultraviolet spectroscopy is presented for three F + B objects that are members of the first group of strongly interacting, F II + B systems. The data obtained confirm that HD 59771, HD 242257, and CoD -30 5135 are all binary star systems consisting of a luminous F-type component and a B star. Strong, variable H-alpha emission is seen in all the stars. It is found that the UV spectrum of HD 59771 resembles the spectrum of HD 207739. CoD -30 5135 has the most dramatic mid-UV spectrum seen among the scores of observed cool + hot star systems.

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