Physics
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...403..202t&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 403, no. 1, p. 202-210.
Physics
10
Massive Stars, Molecular Clouds, Star Formation, Astronomical Models, Gravitational Collapse, Interstellar Gas, Kinematics, Photoionization
Scientific paper
Molecular line observations of one of the bright rims in NGC 2264 are presented in order to elucidate the physics of the interaction between the ionizing flux from a young star and a molecular cloud. The gas west of S Mon was observed; a morphology which indicates interaction with the ionizing radiation from this star was found. The (C-13)O maps show a hollow shell of moderately tense gas, split into three distinct clumps. The two eastern clumps have their long axes pointing toward S Mon. Their shape, aspect ratio, orientation, density, and recession velocity are consistent with predictions of theoretical calculations for clouds of neutral gas shocked and compressed by an ionizing radiation field. The kinematic structure of the southernmost clump indicates the presence of an embedded rotating torus of dense gas.
Goldsmith Paul F.
Lis Dariusz C.
Tauber Jan A.
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