Gamma Cassiopeiae - Spectroscopic variations and its association with the variable X-ray source MX0053 + 60
- 1 December 1976
- journal article
- research article
- Published by IOP Publishing in Publications of the Astronomical Society of the Pacific
- Vol. 88 (526) , 911
- https://doi.org/10.1086/130045
Abstract
Qualitative changes in the spectral appearance of Gamma Cas since 1941 are presented. Velocity variations are searched for to aid in the interpretation of the recently discovered X-ray flux. No evidence is found for velocity variations exceeding 20 km/s, and no periodicities in the range from 2.5 to 4000 days are detected. It is concluded that Gamma Cas is probably a single star, although the possible existence of a low-mass companion cannot be ruled out.Keywords
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