Keck Rotational Velocities of the Faintest Pleiades and Hyades Members

Details Keck Rotational Velocities of the Faintest Pleiades and Hyades Members Keck Rotational Velocities of the Faintest Pleiades and Hyades Members

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aj....112.1562j&link_type=abstract

Astronomical Journal v.112, p.1562

Astronomy and Astrophysics

Astronomy

47

Open Clusters And Associations: Hyades, Open Clusters And Associations: Pleiades, Instruments: Spectrographs

Scientific paper

We have derived rotational velocities of faint Pleiades and Hyades members from high resolution spectra obtained with the HIRES spectrograph on the Keck telescope. The stars observed span the mass where stars become totally convective. We find no change in the character of the distribution of rotational velocities at this point, but instead a gradual trend of increasing rotational velocities. The range in rotational velocities at a given mass in the Pleiades decreases with decreasing mass, and the amount of spindown between Pleiades and Hyades age decreases with decreasing mass. We observe for two of our stars a broad Ha emission component.

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