Far infrared, near infrared, and radio molecular line studies of HFE 2, HFE 3, and FJM 6

Details Far infrared, near infrared, and radio molecular line studies of HFE 2, HFE 3, and FJM 6 Far infrared, near infrared, and radio molecular line studies of HFE 2, HFE 3, and FJM 6

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979aj.....84.1574f&link_type=abstract

Astronomical Journal, vol. 84, Oct. 1979, p. 1574-1580. Research supported by the Aerospace Corp.

Astronomy and Astrophysics

Astronomy

7

Astronomical Spectroscopy, Far Infrared Radiation, Hydrogen Clouds, Interstellar Gas, Molecular Gases, Near Infrared Radiation, Radio Spectroscopy, Brightness Temperature, Carbon Monoxide, Cosmic Rays, Gas Density, Gas Temperature, Infrared Astronomy, Radio Astronomy

Scientific paper

Far-infrared, near-infrared, and radio molecular-line observations of the regions of HFE 2, HFE 3, and FJM 6 are described. At positions of high molecular column density nearest to the reported positions of these sources, their infrared emission cannot be confirmed at upper bounds below those of the original detection. Near-infrared observations of the FJM 6 region (which includes the Bok globule Barnard 361) reveal a number of stellar sources, most of which are behind the molecular cloud and are reddened by it. Visual extinction through B 361 estimated by star counts yields AV/N(/C-13/O) = 3.7 + or - 1.6) x 10 to the -16th mag sq cm. The gas temperature and the upper bound on the dust temperature in the FJM 6 region are consistent with cosmic-ray heating of the cloud, while the values of these parameters for the clouds in the HFE 2 and HFE 3 regions do not appear consistent with either cosmic-ray or radiative heating.

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