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Title:
An analysis of the Yale Bright Star Catalog
Authors:
Bahcall, John N.; Casertano, Stefano; Ratnatunga, Kavan U.
Affiliation:
AA(Institute for Advanced Study, Princeton, NJ), AB(Institute for Advanced Study, Princeton, NJ), AC(Institute for Advanced Study, Princeton, NJ)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 320, Sept. 15, 1987, p. 515-526. (ApJ Homepage)
Publication Date:
09/1987
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
Astronomical Catalogs, Giant Stars, Star Distribution, Stellar Color, Stellar Magnitude, B Stars, Color-Magnitude Diagram, Milky Way Galaxy, O Stars
DOI:
10.1086/165569
Bibliographic Code:
1987ApJ...320..515B

Abstract

The authors analyze the direction, color, and apparent-magnitude distributions of a complete sample of 3993 stars with mv<= 6.0 mag and B-V >= 0.0 from the Yale Bright Star Catalog (BSC). Many of the sample stars are intrinsically bright disk giants. The total number and overall distributions of the BSC stars (excluding O and B stars) are well described by the standard Galaxy model with two major density components. The spatial distribution of O and B stars shows a density enhancement due to the Gould Belt in a 15° region inclined about 20°±3° to the Galactic plane. The total number of O and B stars in the Galaxy is estimated to be ≡107.

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