The bright stellar content of the giant galactic H II region NGC 3603

Details The bright stellar content of the giant galactic H II region NGC 3603 The bright stellar content of the giant galactic H II region NGC 3603

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...124..273m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 124, no. 2, Aug. 1983, p. 273-278. Research supported by the National Research

Astronomy and Astrophysics

Astrophysics

81

B Stars, H Ii Regions, Interstellar Matter, O Stars, Wolf-Rayet Stars, Hertzsprung-Russell Diagram, Interstellar Extinction, Star Clusters, Stellar Spectrophotometry

Scientific paper

NGC 3603 is the closest example of a massive giant H II region like those which serve as distance indicators in some extragalactic systems. On the basis of optical spectral types of the dozen or so brightest stars in NGC 3603, the goals of this investigation are: to check for cluster membership; to improve the distance estimate of this potential giant H II region calibrator; to compare the stellar content with other giant H II regions, like NGC 2070 in 30 Dor, which contains a relatively large fraction of luminous, strong-wind WN stars; to get a handle on the stellar (extrapolated from the optical) UV flux available to ionize the surrounding nebula.

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