The young open cluster NGC 346 in the Small Magellanic Cloud

Details The young open cluster NGC 346 in the Small Magellanic Cloud The young open cluster NGC 346 in the Small Magellanic Cloud

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pasp...98.1133n&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 98, Nov. 1986, p. 1133-1139.

Astronomy and Astrophysics

Astronomy

34

Astronomical Photometry, Magellanic Clouds, O Stars, Open Clusters, Astronomical Spectroscopy, Color-Magnitude Diagram, H Ii Regions, Radial Velocity

Scientific paper

The authors present CCD photometry and spectrographic observations for stars in the open cluster NGC 346, which excites the largest H II region in the Small Magellanic Cloud. These observations show that NGC 346 is an extremely young cluster, containing more than 20 hot O-type stars. A radial-velocity study of the brightest stars, and also of the nearby supergiant Of star Sk 80, discloses atmospheric expansion due to strong stellar winds, but no large-amplitude radial-velocity variations due to short-period binary motion. However, two stars are probably longer period binaries.

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