Wide binary stars at the Galactic poles

Details Wide binary stars at the Galactic poles Wide binary stars at the Galactic poles

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...335l..47g&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 335, Dec. 15, 1988, p. L47-L51.

Physics

11

Binary Stars, Milky Way Galaxy, Stellar Models, Stellar Physics, Angular Correlation, Astronomical Catalogs, Data Sampling, Polar Regions

Scientific paper

Wide binary stars are weakly bound systems easily disrupted by encounters with the constituents of the Galaxy. Thus, they provide a unique way to probe the dynamics and mass distribution of the Galactic disk. Here, five samples of stars complete to visual magnitude 14.0 and covering a total of 110 deg2 near the Galactic poles are used to search for wide binary stars. The estimated number of binaries in the total sample is 3 times smaller than that expected from the previous study by Bahcall and Soneira. The pair separation distribution is compared to a model of wide binary properties using a technique developed by Wasserman and Weinberg. The model predicts that wide binaries should be found in the faint half of the sample (mV >12.0), but none are detected.

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