Determination of a binary period for the variable X-ray source A 1907+09.
Abstract
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.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- October 1980
- DOI:
- 10.1093/mnras/193.1.7P
- Bibcode:
- 1980MNRAS.193P...7M
- Keywords:
-
- 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;
- Astrophysics