Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...340l..57d&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 340, May 15, 1989, p. L57-L60. Research supported by Michigan Sta
Astronomy and Astrophysics
Astrophysics
45
Horizontal Branch Stars, Milky Way Galaxy, Stellar Spectrophotometry, Distance, Monte Carlo Method, Spectral Line Width
Scientific paper
An investigation of the clustering of field horizontal-branch stars in the Galactic halo is reported which examines this question using a catalog of over 4400 candidate field horizontal-branch stars distributed over roughly 2300 sq deg of sky, primarily in the southern Galactic hemisphere. A two-point correlation analysis indicates that the catalog contains an excess of stellar pairs with angular separations of less than 10 arcsec; at the approximate distances of these stars (5-8 kpc from the Sun) the corresponding linear separations are r of less than 25 pc. The possible connection with loose groups of halo field horizontal-branch stars noted previously by Sommer-Larsen and Christensen (1987) and by Beers and Doinidis (1988) is discussed.
Beers Timothy C.
Doinidis Steve P.
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