Ammonia observations and temperatures in the S140/L1204 molecular cloud

Details Ammonia observations and temperatures in the S140/L1204 molecular cloud Ammonia observations and temperatures in the S140/L1204 molecular cloud

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...157..207u&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 157, no. 2, March 1986, p. 207-216.

Astronomy and Astrophysics

Astrophysics

88

Ammonia, Electron Transitions, Interstellar Matter, Molecular Clouds, Brightness Temperature, Far Infrared Radiation, H Ii Regions

Scientific paper

The authors have mapped the NH3(1,1) and (2,2) transitions in the molecular cloud L 1204 associated with the H II region S 140, the number density is close to 5×105cm-3. The derived column density, and the rotational temperature T12 peak at the position of the embedded infrared sources S 140-IRS. The kinetic temperature Tkin(NH3) is in close agreement with earlier measurements of Tkin(CO) and the dust color temperature and decreases smoothly from a value of 40K at S 140-IRS to 20K within the neighbourhood (r < 1.4×1018cm) of the infrared source.

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