Molecular observations of B 1 - A dense globule in Perseus

Details Molecular observations of B 1 - A dense globule in Perseus Molecular observations of B 1 - A dense globule in Perseus

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...140..414b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 140, no. 2, Nov. 1984, p. 414-420.

Astronomy and Astrophysics

Astrophysics

29

Abundance, Interstellar Gas, Molecular Clouds, Molecular Spectra, Star Clusters, Ammonia, Carbon Monoxide, Formyl Ions, Molecular Absorption, Molecular Rotation

Scientific paper

The authors report CO, 13CO, C18O, HCO+, H13CO+, and NH3 observations and star counts of B 1, a strong molecular source in the ridge connecting B 5, IC 348 and NGC 1333 in Perseus. The size of B 1 is 2 pc and its mass 400 M_sun; (at the adopted distance of 200 pc), its kinetic temperature is 12K. The core, where the NH3 (1,1) line was detected, has a size of 0.5 pc, a temperature of 12K, a mass of 60 M_sun;, the visual extinction is ≥10 mag and the H2-density ≈ 3×104cm-3. The chemical abundances of the observed molecules are estimated. Rotation, if it occurs, is too slow to prevent the collapse of the cloud.

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