White, Glenn J.; Phillips, J. P. and Watt, Graeme D.
(1982).
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Abstract
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.
| Item Type: | Conference Item |
|---|---|
| Copyright Holders: | 1982 D. Reidel Publishing Company |
| Extra Information: | Regions of Recent Star Formation: proceedings of the Symposium on Neutral Clouds near HII Regions - Dynamics and Photochemistry
Edited by R. S. Roger, Peter E. Dewdney, Dordrecht : D. Reidel, 1982 (Astrophysics and Space Science Library. Proceedings; v.93) ISBN 90-277-1383-9 pp.237-244 |
| Keywords: | carbon monoxide; electron transitions; emission spectra; interstellar gas; molecular clouds; molecular spectra; angular resolution; astronomical maps; gas temperature; stellar evolution |
| Academic Unit/Department: | Science > Physical Sciences |
| Interdisciplinary Research Centre: | Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR) |
| Related URLs: | |
| Item ID: | 33801 |
| Depositing User: | Glenn White |
| Date Deposited: | 06 Jun 2012 12:49 |
| Last Modified: | 06 Jun 2012 12:53 |
| URI: | http://oro.open.ac.uk/id/eprint/33801 |
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