The stellar content of associations and star complexes in M33

Details The stellar content of associations and star complexes in M33 The stellar content of associations and star complexes in M33

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.178..227i&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 178, no. 2, April 1991, p. 227-249.

Astronomy and Astrophysics

Astrophysics

15

Star Clusters, Stellar Systems, Andromeda Galaxy, Astronomical Catalogs, Star Distribution

Scientific paper

Photographic UBV photometry is used to map stellar associations and star complexes in M33 to characterize the galaxy and compare the results to other nearby galaxies. The appearance of the associations is revised according to the images and a cluster analysis, which show them clustering within the classical OB associations. A shock wave across the southern spiral arm can be tested observationally by the stellar associations, and the central region, contrasting the outer region, is found to be rich in WR, O, and luminous stars. The difference between derived association ages and expansion ages suggests the existence of two or more generations of star formation in the old associations.

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