H-alpha variability in X-ray transient source X0331 + 53

Details H-alpha variability in X-ray transient source X0331 + 53 H-alpha variability in X-ray transient source X0331 + 53

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97.1186i&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, Dec. 1985, p. 1186-1188.

Astronomy and Astrophysics

Astronomy

14

H Alpha Line, Pulsars, Variable Stars, X Ray Binaries, Light Curve, Spectral Line Width, Stellar Models, Stellar Spectra

Scientific paper

Spectroscopic observations of X0331+53 between October 1984 and March 1985 revealed that the equivalent width of Hα emission decreased by a factor of about four relative to that observed one year ago. This finding, in association with the decline of X-ray activity of the source reported by the EXOSAT group, is interpreted to support the binary model of an OB star and a pulsar in which the Hα emission originates in a direct vicinity of the massive primary star.

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