Searching for Massive Protostars: a BIMA Survey of High-Mass Precursors

Details Searching for Massive Protostars: a BIMA Survey of High-Mass Precursors Searching for Massive Protostars: a BIMA Survey of High-Mass Precursors

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aspc..267..371g&link_type=abstract

Hot Star Workshop III: The Earliest Stages of Massive Star Birth. ASP Conference Proceedings, Vol. 267. Edited by Paul A. Crowth

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We have observed a sample of 9 ultracompact HII regions which show extended submillimetre dust emission in the 3-mm lines of N2H+, CH3OH, C34S, CH3CN, C18O and 3-mm continuum. We detected 50 massive cores, most previously unknown and most with no embedded infrared or radio sources. Of those mapped in both N2H+ and C18O, 21% have weak or no C18O emission. These cores show evidence for CO depletion, and may therefore be undergoing collapse.

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