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ABSTRACT

Kutner et al. 1976

Kutner, M.L., N.J. Evans, II, and K.D. Tucker, 1976: A dense molecular cloud in the OMC-1/OMC-2 region. Astrophys. J., 209, 452-457, doi:10.1086/154739.

H2CO emission at 2 mm is seen over a region 30' in extent which includes OMC-1 and OMC-2. The mass of this cloud, estimated from H2CO and CO observations, is ~ 7×103 M. The velocity pattern is one of rotation, with evidence for fragmentation into two or three distinct condensations. A sharp boundary to the molecular cloud is observed at the edge of the H II region in NGC 1977. It appears likely that NGC 1977 is a condensation at the northern end of the cloud, complementary to the Orion Nebula at the southern end.

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