A First X-ray View of Infrared Dark Clouds, Precursors to Star Clusters

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Stars, White Dwarfs, Solar System, Irdc G053.11+00, Xmm-Newton Proposal 05037401

Scientific paper

A large population of infrared dark clouds (IRDCs) was recently discovered as a new component of the cold interstellar medium, inside which infrared and radio studies provide evidence for massive star formation. They are thought to represent the earliest phases of the formation of star clusters and massive stars. We propose to observe one of the closest massive IRDCs with XMM-Newton, as the first X-ray study of this new population of objects. This 84 ks EPIC observation of G053.11+00.05 will quantitatively measure the embedded stellar populations, especially the low mass stars that XMM-Newton effectively identifies. The goals are to evaluate the roles of IRDCs in the formation of star clusters and massive stars, and to constrain the current theories of clustered massive star formation.

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