Infrared Dark Clouds in the SCUBA Legacy Archive - a bimodal population?

Details Infrared Dark Clouds in the SCUBA Legacy Archive - a bimodal population? Infrared Dark Clouds in the SCUBA Legacy Archive - a bimodal population?

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atnf.prop.1436t&link_type=abstract

ATNF proposal M306, Semester: April, 2008

Physics

Galactic, Mopra

Scientific paper

Infrared Dark Clouds (IRDCs) are currently of much interest as the precursors of stellar clusters and the formation sites of massive stars. We have identified a sample of IRDCs in the SCUBA Legacy Archive and have found that these clouds split into two populations, those detected by SCUBA and those that were not. The differences between these two populations are puzzling as we show that SCUBA ought to have detected essentially all IRDCs within the mapped area. We propose Mopra spectroscopy of a sample of these clouds to determine their kinematic distances and investigate the hypothesis that they may be voids in the Galactic mid-IR background or a population of low column density IRDCs.

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