Are binaries concentrated toward the centers of open clusters

Details Are binaries concentrated toward the centers of open clusters Are binaries concentrated toward the centers of open clusters

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...241..275a&link_type=abstract

Astrophysical Journal, Part 1, vol. 241, Oct. 1, 1980, p. 275-278.

Astronomy and Astrophysics

Astrophysics

14

Binary Stars, Open Clusters, Star Distribution, Astronomical Catalogs, Radial Distribution

Scientific paper

The distances in the plane of the sky from the centers of eight open clusters have been derived for 48 spectroscopic and visual binaries and 113 constant-velocity stars. These show no evidence for a concentration of binaries toward the center of young clusters but indicate 2 sigma evidence for a binary concentration toward the centers of old clusters or 2.4 sigma evidence from spectroscopic binaries alone. The detailed radial distributions of binaries in old clusters confirm this concentration, showing that the binaries near the cluster centers are harder (or of shorter periods).

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