Stromgren and H-beta photometry of stars earlier than G0 in the Southern Coalsack direction

Details Stromgren and H-beta photometry of stars earlier than G0 in the Southern Coalsack direction Stromgren and H-beta photometry of stars earlier than G0 in the Southern Coalsack direction

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26as...77..227f&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 77, no. 2, Feb. 1989, p. 227-236. Sponsorship: Coordenacao d

Astronomy and Astrophysics

Astrophysics

5

Astronomical Photometry, Early Stars, H Beta Line, Stellar Color, A Stars, Astronomical Catalogs, B Stars, F Stars, Interstellar Matter

Scientific paper

Four-color and H-beta photometry have been obtained for 236 stars earlier than G0 in order to study the color excess distribution in the Southern Coalsack direction. The beta histogram of the stars reveals a relative absence of stars in the range of A4 to A9. The (b-y) distribution for B-type stars suggests the existence of three different types of stars located at different distances.

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