Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108..964p&link_type=abstract
The Astronomical Journal, vol. 108, no. 3, p. 964-969
Astronomy and Astrophysics
Astronomy
14
Binary Stars, Radial Velocity, Sky Surveys (Astronomy), Star Clusters, Stellar Rotation, Astronomical Photometry, Astronomical Spectroscopy, Chronology, Color, Stellar Magnitude, Tables (Data), Velocity Measurement
Scientific paper
A radial velocity survey of the open cluster IC 4665 is reported for a group of candidate members previously identified on the basis of proper motion and photometry. Of those candidates observed, 20 out of 42 have radial velocities consistent with membership; these cluster members populate the F5-K0 dwarf region and represent the first relatively conclusive membership determinations for such solar-type stars in IC 4665. Three new spectroscopic binary members of the cluster have been identified. Rotational velocities have also been derived; the v sin i distribution among IC 4665 members reveals that most apparent G dwarf members of IC 4665 are seen to exhibit substantial rotation (v sin i greater than 10 km/s). When compared to evolutionary isochrones, the current list of intermediate-mass members appears to support earlier suggestions that IC 4665 has an age comparable to the Pleiades.
Giampapa Mark S.
Prosser Charles F.
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