Determination of a binary period for the variable X-ray source A1907+09

Details Determination of a binary period for the variable X-ray source A1907+09 Determination of a binary period for the variable X-ray source A1907+09

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.193p...7m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 193, Oct. 1980, p. 7P-13P. Research supported by the Science Research C

Astronomy and Astrophysics

Astronomy

37

Astrometry, Binary Stars, H Alpha Line, Stellar Spectra, X Ray Sources, Ariel 5 Satellite, Emission Spectra, Flare Stars, Light Curve, Sky Surveys (Astronomy), X Ray Binaries

Scientific paper

An analysis of observations of A1907+09 made with the Ariel V Sky Survey Instrument between 1974 November and 1980 February has revealed a binary period of 8.380 + or - 0.002 day. During the last observation, in 1980 January, a long outburst was observed and limited spectral information was obtained. The light curve supports the proposition that A1907+09 is a member of the class of X-ray binaries containing a massive optical component.

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