Rapid rotation among Pleiades K dwarfs

Details Rapid rotation among Pleiades K dwarfs Rapid rotation among Pleiades K dwarfs

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...274l..37s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 274, Nov. 1, 1983, p. L37-L41. Research supported b

Other

20

Dwarf Stars, K Stars, Late Stars, Pleiades Cluster, Star Clusters, Stellar Evolution, Stellar Rotation, Variable Stars, Angular Velocity, H Alpha Line, Stellar Spectra

Scientific paper

Spectroscopic observations of Pleiades K dwarfs indicate that these stars have equatorial rotational velocities as high as 150 km/s, nearly an order of magnitude greater than other Pleiades dwarfs of similar mass. This confirms that some short-period variables discovered photometrically are indeed rapidly rotating stars. These rapid rotators are probably heavily spotted stars like other late-type stars that exhibit periodic photometric variations. They are definitely not ellipsoidal stars or close binaries.

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