Hydrogen cyanide in the bipolar source CEP A

Details Hydrogen cyanide in the bipolar source CEP A Hydrogen cyanide in the bipolar source CEP A

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...153..139w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 153, no. 1, Dec. 1985, p. 139-144.

Astronomy and Astrophysics

Astrophysics

20

Carbon Monoxide, Hydrocyanic Acid, Interstellar Matter, Molecular Clouds, Stellar Evolution, Data Reduction, Interferometry, Radio Observation

Scientific paper

The Cep A molecular cloud has been mapped in the 87 GHz continuum and in the J = 1-0 transition of HCN with a combination of single antenna and interferometer observations. The resolution is 19arcsec×14arcsec and 0.8 km s-1 in velocity. The authors have detected a 115 mJy continuum source which they identify with the source of the extended bipolar molecular outflow. In the HCN line, they find a quiescent cloud located about 20arcsec east of the continuum source. This cloud has a mass of about 100 M_sun;. It shows no evidence for either bipolar outflow (unlike CO) or for rotation (unlike NH3). The authors argue that this cloud has deflected the blue-shifted lobe seen in CO emission and reduced the momentum of the flow in that lobe.

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