Cyanoacetylene as a density probe of molecular clouds

Details Cyanoacetylene as a density probe of molecular clouds Cyanoacetylene as a density probe of molecular clouds

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...271..161v&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 271, Aug. 1, 1983, p. 161-169.

Other

28

Astronomical Spectroscopy, Cyano Compounds, Density Measurement, Gas Density, Molecular Clouds, Cyanoacetylene, Molecular Spectra

Scientific paper

Total gas volume densities have been estimated for a sample of 19 molecular clouds from observations of HC3N. These density estimates are based on observations of only the J = 5-4 and J = 9-8 transitions for 10 clouds. Better estimates were possible for the nine clouds in which three or more transitions were detected. Isothermal, homogeneous-density models could be fitted to the multi-line data for four clouds; only one cloud (Sgr B2) required a two-component model. The data are consistent with the more elaborate density-gradient models published for the S140 and L1529 clouds.

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