Confirmation of a 9.8 day period of CYG X-2.
Abstract
New spectroscopic observations of Cyg X-2 confirm the period, phasing, amplitude, and shape of the velocity variations previously discovered. The degenerate dwarf model put forward by Branduardi et al. (1979) to explain the X-ray behavior cannot be reconciled with these observations.
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- April 1980
- DOI:
- Bibcode:
- 1980PASP...92..147C
- Keywords:
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- Binary Stars;
- Neutron Stars;
- Orbital Elements;
- Stellar Spectra;
- X Ray Sources;
- Astronomical Spectroscopy;
- Radial Velocity;
- Stellar Luminosity;
- Stellar Mass Accretion;
- Astrophysics