Submillimetre CO observations of the Cepheus A outflow

Details Submillimetre CO observations of the Cepheus A outflow Submillimetre CO observations of the Cepheus A outflow

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...174..197r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 174, no. 1-2, March 1987, p. 197-202.

Astronomy and Astrophysics

Astrophysics

9

Carbon Monoxide, Interstellar Matter, Molecular Clouds, Submillimeter Waves, Astronomical Maps

Scientific paper

The authors have carried out spectral mapping of the Cep A region in the J = 3-2 transition of CO. The high velocity wings symptomatic of outflowing gas are evident over a region ≡6×6 arc min in extent (≡1.3×1.3 pc). There appear to be 2 outflows, as found also for HCO+ by Loren et al. (1985). The CO J = 3-2 red wing intensity is enhanced relative both to lower transition CO data and to HCO+ J = 1-0, particularly to the south and east of Cep A, a result which suggests the presence of hot, optically thin gas in the flow. No such significant enhancement is seen, however, in the blue wing. The data are discussed in terms of a 2 component outflow in which the HCO+ emission originates mainly from dense clumps in the flow while a less dense (but >4×104cm-3) interclump medium is responsible for most of the 12CO emission.

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