The open cluster NGC 6193 - Another cluster rich in spectroscopic binaries

Details The open cluster NGC 6193 - Another cluster rich in spectroscopic binaries The open cluster NGC 6193 - Another cluster rich in spectroscopic binaries

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pasp..100.1076a&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, Sept. 1988, p. 1076-1083.

Astronomy and Astrophysics

Astronomy

25

Binary Stars, Open Clusters, Star Distribution, Astronomical Spectroscopy, Radial Velocity, Stellar Rotation, Stellar Spectra

Scientific paper

From spectrographic observations of probable members of NGC 6193 the authors have obtained radial velocities, projected axial rotational velocities, and approximate spectral types. They computed the average axial rotation with respect to the field stars for the members of NGC 6193 as 0.67±0.08 and an average heliocentric radial velocity for the cluster of -33.1 km sec-1. Six new spectroscopic binaries and a He-rich star were discovered. The authors compare the high incidence of spectroscopic binaries among the main-sequence members of NGC 6193 with clusters of similar average axial rotation.

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