TMC1-like cloudlets in HCL2

Details TMC1-like cloudlets in HCL2 TMC1-like cloudlets in HCL2

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...138..371c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 138, no. 2, Sept. 1984, p. 371-379.

Astronomy and Astrophysics

Astrophysics

45

Abundance, Astronomical Spectroscopy, Interstellar Gas, Molecular Clouds, Ammonia, Condensing, Cyano Compounds, Cyanoacetylene, Emission Spectra, Interstellar Extinction

Scientific paper

The authors have studied, in the lines of NH3, HC3N, HC5N, HC7N, C3N, and C4H, the three most conspicuous gas condensations of Heiles' Cloud 2 (HCL2) besides TMC1 (Taurus molecular cloud one). One of these condensations appears to be the strongest source of cyanopolyyne (HC2n+1N) emission in the sky, after TMC1, and is the fourth source in which HC7N and C3N have been detected. Another condensation shows a strong gradient in the NH3/cyanopolyyne abundance ratio over a distance of 0.2 pc.

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