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2009

The Massive Star Forming Region, Cygnus OB2

Wright, N. J., Drake, J. J.

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We present results from a catalogue of 1696 X-ray point sources detected in the massive star forming region (SFR) Cygnus OB2, the majority of which have optical or near-IR associations.

We derive ages of 3.5 and 5.25 Myrs for the stellar populations in our two fields, in agreement with recent studies that suggest that the central 1-3 Myr OB association is surrounded and contaminated by an older population with an age of 5-10 Myrs.
The fraction of sources with proto-planetary disks, as traced by K-band excesses, are unusually low.
Though this has previously been interpreted as due to the influence of the large number of OB stars in Cyg OB2, contamination from an older population of stars in the region could also be responsible.

The Massive Star Forming Region, Cygnus OB2 · Around

Built on

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Kroupa, P., 2002, Science
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