The KW object - Onset of a Massive Cluster Formation Caught in the Act

Details The KW object - Onset of a Massive Cluster Formation Caught in the Act The KW object - Onset of a Massive Cluster Formation Caught in the Act

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..322..385h&link_type=abstract

The Formation and Evolution of Massive Young Star Clusters, ASP Conference Series, Vol. 322. Edited by H.J.G.L.M. Lamers, L.J.

Astronomy and Astrophysics

Astronomy

Scientific paper

A multicolour high-resolution imaging study of the KW object indicates that this puzzling IR source is a binary system of early B-type stars with a projected separation of 2600 AU, associated with a faint IR reflection nebula. The brighter component with an IR luminosity of 4.1 ⋯ 103 L&sun; is obscured by 25 mag of visual extinction and exhibits a huge IR excess. The system is embedded in a small cluster of about 100 stars of which 25% also show IR excess emission. From the density of OB stars within the central 0.1 pc of 2.4 ⋯ 103 stars pc-3 we suggest that a new massive cluster is presently forming in the molecular cloud M 17 SW.

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