Protostars and Planets VI, Heidelberg, July 15-20, 2013

Poster 1H011

Herschel Reveals Massive Cold Clump Candidates in NGC 7538

Fallscheer, Cassandra (UVic/NRC-Herzberg)
Reid, Mike (University of Toronto)
Di Francesco, James (NRC-Herzberg/UVic)
Martin, Peter (CITA)
Hill, Tracey (CEA Saclay)

Observations of the high-mass star formation region NGC 7538 taken with the Herschel Space Observatory were made at 70, 160, 250, 350, and 500 micron as part of the Herschel imaging study of OB Young Stellar objects (HOBYS) Key Programme. Within the one square degree field, we identify 780 dense sources and classify 224 of those. With the intention of investigating the existence of cold massive starless or class 0-like clumps that would have the potential to form intermediate- to high-mass stars, we further isolate 13 clumps as the most likely candidates for follow-up studies. A peculiar feature in the observations is a large, nearly complete ring of material. The evacuated ring is of unknown origin and hosts a number of the detected sources.

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