A ug 2 00 4 Star Formation in the W 49 A Molecular Cloud : Birth of a Massive Star Cluster


The W49A star-forming region is embedded in a 10 6 M ⊙ molecular cloud, one of the most massive in our Galaxy. It has been long known as one of the most luminous radio H II regions, containing 30 − 40 compact and ultracompact H II regions and several hot cores. We have detected a previously unknown massive star cluster (Cluster 1) embedded in the W49… (More)

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