CO (J = 2-1) observations of molecular clouds associated with H II regions from the southern hemisphere

Details CO (J = 2-1) observations of molecular clouds associated with H II regions from the southern hemisphere CO (J = 2-1) observations of molecular clouds associated with H II regions from the southern hemisphere

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...139..181b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 139, no. 1, Oct. 1984, p. 181-195.

Astronomy and Astrophysics

Astronomy

25

Carbon Monoxide, H Ii Regions, Milky Way Galaxy, Molecular Clouds, Radio Sources (Astronomy), Southern Sky, Astronomical Maps, Emission Spectra, Radial Velocity, Radio Spectra

Scientific paper

The authors have searched for CO (J = 2→1) emission at 47 positions in the direction of southern H II regions, mainly taken from the RCW-catalogue. The observations are compared with CO results obtained by other workers and briefly discussed. There seems to be no significant difference between the TA*(J = 2→1) and TA*(J = 1→0) transitions. In general no systematic velocity difference between the molecular and ionized gas is found. Three objects were observed in more detail: G265.1+1.5 (RCW 36), G327.3-0.6, and G35.2-1.8 (W 48). The source G327.3-0.6, associated with RCW 97, is a relatively small CO cloud, showing the characteristics of bipolar outflow. The CO emission associated with W 48 is complex; there is evidence for self absorption. In the direction of RCW 36 there are at least two clouds or cloud components along the line of sight.

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