Star complexes in the Andromeda Nebula

Details Star complexes in the Andromeda Nebula Star complexes in the Andromeda Nebula

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pazh....8..585e&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 8, Oct. 1982, p. 585-592) Soviet Astronomy Letters (ISSN 0360-0327), vol. 8, Sept.-Oct.

Astronomy and Astrophysics

Astronomy

7

Andromeda Galaxy, B Stars, O Stars, Supergiant Stars, Photographic Plates, Stellar Color, Stellar Magnitude

Scientific paper

Provisional (V, B-V) diagrams for several of van den Bergh's (1964) OB associations in the Andromeda Nebula (M31) are obtained from plates taken at the Cassegrain foci of 2 m and 1 m Ritchey-Chretien telescopes in order to study the structure of its spiral arms and the position and properties of young groupings of stars. It is found that the proportion of red supergiants in the Andromeda galaxy increases with distance from its center, just as is observed in our Galaxy and in M33. Plates with a limit of 21-22 m B are found to show a considerable number of new star groupings evidently devoid of O stars or relatively compact.

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