Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984aj.....89..549h&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 89, April 1984, p. 549-558.
Astronomy and Astrophysics
Astronomy
26
Eclipsing Binary Stars, H Alpha Line, Stellar Spectrophotometry, Emission Spectra, Solar Flares, Spectral Energy Distribution, Stellar Envelopes, Stellar Rotation, Stellar Temperature, Temporal Distribution
Scientific paper
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.
Huenemoerder David P.
Ramsey Lawrence W.
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