A complete sample of wide binaries in the solar neighborhood

Details A complete sample of wide binaries in the solar neighborhood A complete sample of wide binaries in the solar neighborhood

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj....100.1968c&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 100, Dec. 1990, p. 1968-1980. Research supported by NSERC.

Astronomy and Astrophysics

Astronomy

42

Binary Stars, Solar Neighborhood, Stellar Mass, Astronomical Catalogs, Milky Way Galaxy, Radial Velocity

Scientific paper

A well-defined sample of unambiguously bound wide binaries in the solar neighborhood is presented. The sample appears complete for physical systems where s is greater than 0.32 mpc, M(V) is less than 9.0, pi is 0.040 arcsec or greater, and delta is larger than -12 deg. The sample contains 39 systems, of which about 41 percent are hierarchical systems. The distribution of the separations from the sample obeys a simple power law relation. A sharp cutoff in number density is indicated at about 0.1 pc. Based on the sample, number densities for wide binaries are calculated as a function of separation. It appears that about 3 percent of local stars should be members of systems wider than 0.01 pc.

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