New Wolf-Rayet stars in Galactic open clusters - Sher 1 and the giant H II region core Westerlund 2

Details New Wolf-Rayet stars in Galactic open clusters - Sher 1 and the giant H II region core Westerlund 2 New Wolf-Rayet stars in Galactic open clusters - Sher 1 and the giant H II region core Westerlund 2

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....102..642m&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 102, Aug. 1991, p. 642-653. Research supported by NSERC.

Astronomy and Astrophysics

Astronomy

38

Galactic Clusters, H Ii Regions, Milky Way Galaxy, Open Clusters, Ubv Spectra, Wolf-Rayet Stars, Color-Color Diagram, Color-Magnitude Diagram, Sky Surveys (Astronomy)

Scientific paper

Two new Galactic Wolf-Rayet stars were found in open clusters: a WN4
star in the O9 cluster Sher 1 and a WN7 star in the O7 cluster
Westerlund 2. This confirms a previous trend, namely that fainter,
hotter WN stars tend to be older than brighter, cooler WN stars. This
may be a consequence of evolution via extreme mass loss.

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