On H-alpha variability in Alpha Lyrae

Details On H-alpha variability in Alpha Lyrae On H-alpha variability in Alpha Lyrae

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97...60c&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, Jan. 1985, p. 60, 61.

Astronomy and Astrophysics

Astronomy

3

A Stars, H Alpha Line, Line Shape, O Stars, Variability, Diurnal Variations, Stellar Spectrophotometry

Scientific paper

Observations of Alpha Lyr obtained in a 36-nm band centered on H-alpha using a rapid-scanning spectrophotometer with entrance slit 120 microns, exit slit 250 microns, FWHM resolution 650 pm, and scan duration 4.28 min at the Cassegrain focus of the 61-cm reflecting telescope at Yerkes Observatory over 17.5 h on six nights spanning 43 days in July-August 1984, are reported. A typical scan is presented graphically, and no variability of the type observed by Goraya and Singh (1983) in October 1983, is found.

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