Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...18311109w&link_type=abstract
American Astronomical Society, 183rd AAS Meeting, #111.09; Bulletin of the American Astronomical Society, Vol. 25, p.1458
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Scientific paper
FK Comae is an evolved G giant rotating at vsin i = 164.5 +/- 2.1kms(-1) and exhibits a very strong Hα emission line. In addition, it has long been known to have other signatures of magnetic activity characteristic of RS CVn systems and Weak-lined T Tauri stars such as Delta V ~ 0.1 photometric variability indicative of spots, and strong X-ray and UV line emission. Our recent detailed analysis of the spectrum of this star have turned up variations in vsin i that we attribute to changes in the shape of the star of order 2.5%. We present the data for several seasons to support this interpretation and discuss three possible explanations for this highly unusual observed behavior.
Ramsey Lawrence W.
Welty Alan D.
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