The Stellar Content of Obscured Galactic Giant H II Regions

Abstract

Near infrared images of the Galactic giant HII region W43 reveal a dense stellar cluster at its center. Broad band JHK photometry of the young cluster and K-band spectra of three of its bright stars are presented. The 2 micron spectrum of the brightest star in the cluster is very well matched to the spectra of Wolf-Rayet stars of sub-type WN7. Two other stars are identified as O type giants or supergiants by their NIII and CIV emission. The close spatial clustering of O and the hydrogen WN type stars is analogous to the intense star burst clusters R136 in the Large Magellanic Cloud and NGC3603 in the Galaxy.

22 pages (LaTex), including 7 figures (eps)

References in corpus (4)

• HST/NICMOS Observations of Massive Stellar Clusters Near the Galactic Center
• Massive Stars in the Quintuplet Cluster
• The Stellar Content of Obscured Galactic Giant H II Regions
• H-Band Spectroscopic Classification of OB Stars

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