Newly Born O Stars in Clusters

Details Newly Born O Stars in Clusters Newly Born O Stars in Clusters

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..388..387c&link_type=abstract

Mass Loss from Stars and the Evolution of Stellar Clusters ASP Conference Series, Vol. 388, proceedings of the conference held 2

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Scientific paper

We present 4.5μm, 8μm, and 24μm images of four UCHII regions that we have obtained using the Spitzer IRAC and MIPS instruments. We show that the exciting stars of one of our objects appears double and the other three are multiple, e.g., small clusters. These latter sources also have other nearby (within 5 pc) star forming regions. The birth of relatively isolated massive stars seems typically to be in small clusters and connects to multiple nearby sites of star formation. We resolve the dust cocoons surrounding the exciting sources of spatial dimension ≈ 1pc, as predicted by the models. Three of the cocoons are asymmetric.

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