Hydrogen-alpha observations of RS Canum Venaticorum stars. III. The eclipsing systems AR Lacertae and SZ Piscium.
Abstract
The authors have spectroscopically monitored two eclipsing double-lined RS CVn binaries, AR Lacertae and SZ Piscium, over many orbital periods at the wavelength of Hα. Excess Hα emission profiles were derived by subtracting composite comparison spectra synthesized from observations of single inactive stars. AR Lac showed no excess Hα emission. SZ Psc was highly active with emission from the cooler stellar component. SZ Psc also underwent a large Hα outburst during and after which profiles were suggestive of a circumstellar origin.
- Publication:
-
The Astronomical Journal
- Pub Date:
- April 1984
- DOI:
- 10.1086/113547
- Bibcode:
- 1984AJ.....89..549H
- Keywords:
-
- Eclipsing Binary Stars;
- H Alpha Line;
- Stellar Spectrophotometry;
- Emission Spectra;
- Solar Flares;
- Spectral Energy Distribution;
- Stellar Envelopes;
- Stellar Rotation;
- Stellar Temperature;
- Temporal Distribution;
- Astrophysics