Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...283..200m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 283, Aug. 1, 1984, p. 200-204.
Astronomy and Astrophysics
Astrophysics
26
Giant Stars, Peculiar Stars, Radial Velocity, Stellar Spectra, Binary Stars, Cross Correlation, Stellar Models
Scientific paper
The authors present observations of the radial velocity behavior of the peculiar, rapidly rotating late-type giant FK Comae. Observations of the Na D lines in FK Comae and several well-studied radial velocity standards were obtained on 15 nights during late winter and spring 1982. Using cross-correlation techniques to search for variations against the standards, the authors set an upper limit of 5 km s-1. The implications of this limit on models for FK Comae extant in the literature are discussed in detail, with the conclusion that models requiring accretion from a binary companion are inconsistent with the current data.
McCarthy James K.
Ramsey Lawrence W.
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