Observations of CO J = 3→2 emission from molecular clouds

White, Glenn J.; Phillips, J. P. and Watt, Graeme D. (1982). Observations of CO J = 3→2 emission from molecular clouds. In: Symposium on Neutral Clouds near HII Regions - Dynamics and Photochemistry, 24-26 Jun 1981, Penticton, British Columbia, Canada, pp. 237–244.


Extensive spectral observations in the CO J = 3→2 line have been made toward a sample of hot-centered molecular clouds which exhibit self-absorption or high-velocity gas. The observations were made with the 3.8-m United Kingdom Infrared Telescope (UKIRT) with the QMC and UKIRT submillimeter heterodyne receivers. The spectra are generally similar to observations in the lower CO transitions, though there is a tendency for enhanced red-shifted high velocity gas to be present. Mapping observations with high angular resolution have revealed accurate positions and intensity profiles for a number of sources. NGC 2068 and NGC 2023 are resolved, isolated, and symmetrical clouds, while NGC 1333 and NGC 2024 are more complex areas, containing multiple hotspots.

Viewing alternatives

Item Actions