White, Glenn J.; Phillips, J. P. and Watt, Graeme D.
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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)
|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)|
|Depositing User:||G. J. White|
|Date Deposited:||06 Jun 2012 12:49|
|Last Modified:||18 Jan 2016 14:13|
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