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Molecules in the Magellanic Clouds

Published online by Cambridge University Press:  19 July 2016

R. S. Booth  and
Th. De Graauw
R. S. Booth
Affiliation:
Onsala Space Observatory, Chalmers University of Technology, S-439 Onsala, Sweden
Th. De Graauw
Affiliation:
Laboratory for Space Research Groningen, University of Groningen, PO Box 800, NL-9700 AV Groningen, The Netherlands

Abstract

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In this short review we describe recent new observations of millimetre transitions of molecules in selected regions of the Magellanic Clouds. The observations were made using the Swedish-ESO Submillimetre Telescope, SEST, (Booth et al. 1989), the relatively high resolution of which facilitates, for the first time, observations of individual giant molecular clouds in the Magellanic Clouds. We have mapped the distribution of the emission from the two lowest rotational transitions of 12CO and 13CO and hence have derived excitation conditions for the molecule. In addition, we have observed several well-known interstellar molecules in the same regions, thus doubling the number of known molecules in the Large Magellanic Cloud (LMC). The fact that all the observations have been made under controlled conditions with the same telescope enables a reasonable intercomparison of the molecular column densities. In particular, we are able to observe the relative abundances among the different isotopically substituted species of CO.

Type
The Interstellar Medium
Information
Symposium - International Astronomical Union , Volume 148: The Magellanic Clouds , 1991 , pp. 415 - 420
Copyright
Copyright © Kluwer 1991 

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