Rotation of FK Comae

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

DOI:https://doi.org/10.1086/132635· OSTI ID:6770557

Rucinski, S M ^[1]

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1. York Univ., Toronto (Canada)

V sin i for the rapidly rotating G-type giant FK Com is estimated using high-resolution coude spectra and the Fourier transform approach. The result, V sin i = 159 + or - 4 km/s, agrees well with recent determinations which used direct comparison of FK Com spectra with those of artificially broadened standards. If FK Com does not differ drastically in its internal structure from more normal stars, its angular momentum is a few (perhaps 10) times larger than for single rapidly rotating stars following standard relations for the upper main sequence. It angular momentum is about 3 times smaller than that of the orbital motion in a typical W UMa-type system. 30 refs.

• OSTI ID: 6770557
• 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
GIANT STARS
ROTATION
ANGULAR MOMENTUM
COMPARATIVE EVALUATIONS
DATA PROCESSING
FOURIER TRANSFORMATION
SPECTRA
STAR EVOLUTION
INTEGRAL TRANSFORMATIONS
MOTION
PROCESSING
STARS
TRANSFORMATIONS
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources