Abstract
Methylidyne (CH) line observations were obtained at Algonquin from the diffuse molecular cloud envelope at G180.9+4.1, sandwiched between the optical H II region S241 and the molecular cloud core at G180.8+4.0. An analysis of these observations yields several of the envelope parameters, notably a CH column density of 2×1013 cm−2, a microturbulent velocity of 2.6 km s−1, and a total space density of 40 cm−3.
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Vallée, J.P. Physical parameters of the diffuse molecular cloud envelope at G180.9+4.1, next to S241. Astrophys Space Sci 139, 129–137 (1987). https://doi.org/10.1007/BF00643818
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DOI: https://doi.org/10.1007/BF00643818