The Delta Scuti variable AI Canum Venaticorum - Short-period variables, spectroscopic binaries, and the Bright Star Catalogue

Journal Article · Thu Mar 01 00:00:00 EST 1990 · Publications of the Astronomical Society of the Pacific; (USA)

DOI:https://doi.org/10.1086/132637· OSTI ID:6806923

King, J R; Liu, Tianxing ^[1]

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1. Hawaii Univ., Honolulu (USA) Boston Univ., MA (USA)

The observational history of the Delta Scuti star AI CVn was traced, and it was found to be incomplete and contradictory. It is suggested that the star is misclassified as a spectroscopic binary in The Bright Star Catalogue and that simultaneous spectroscopic and photometric observations are needed to determine the true nature of this star. Spectra presented give the most precisely determined radial velocities to data. The line profiles show no indication of a double-lined spectroscopic binary. The FWHM of the lines vary due to pulsation only, and the line broadening can be explained by a quite plausible value of the rotational velocity. A list of 20 other bright star is presented, which could be misclassified as spectroscopic binaries and are, therefore, candidates for further study. 21 refs.

• OSTI ID: 6806923
• Journal Information: Publications of the Astronomical Society of the Pacific; (USA), Vol. 102; ISSN 0004-6280
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
CLASSIFICATION
CATALOGS
CEPHEIDS
ERRORS
HISTORICAL ASPECTS
RADIAL VELOCITY
SPECTRA
SPECTROPHOTOMETRY
WHITE DWARF STARS
DOCUMENT TYPES
DWARF STARS
PULSATING VARIABLE STARS
STARS
VARIABLE STARS
VELOCITY
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources