Radial velocities for contact binary systems. I. W UMa and AW UMa.
Abstract
Radial velocity observations obtained by a numerical cross-correlation technique are presented for the two W Ursae Majoris type contact binaries W UMa and AW UMa. Spectroscopic mass ratios are determined, for the first time in the case of AW UMa, and compared with the photometric values. The results obtained show a significant discrepancy in the case of W UMa but good agreement for AW UMa, and it is suggested that a possible explanation is in terms of line distortion.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- June 1981
- DOI:
- 10.1093/mnras/195.4.931
- Bibcode:
- 1981MNRAS.195..931M
- Keywords:
-
- Binary Stars;
- Radial Velocity;
- Stellar Spectra;
- Cross Correlation;
- Mass Ratios;
- Photographic Plates;
- Astronomy