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ISO-[CII]-Investigation of Cool HI Clouds in the Large Magellanic Cloud

Published online by Cambridge University Press:  25 May 2016

M. Marx-Zimmer
Affiliation:
Radioastronomisches Institut der Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
F. Zimmer
Affiliation:
Radioastronomisches Institut der Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
U. Herbstmeier
Affiliation:
Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
J. M. Dickey
Affiliation:
Department of Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA

Extract

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Despite a strong UV radiation field, the Large Magellanic Cloud (LMC) shows a relatively large abundance of cool HI gas. Neither CO- nor [CII]-lines have been detected in most of these regions in previous surveys. The energy balance of these cool clouds, of which some are located in warm surroundings, is still an open question. The improved resolution and sensitivity of the ISO telescope compared to previous measurements offers a unique opportunity to study the heating and cooling of these clouds in the LMC. Here we present first results of an investigation of the dominant cooling line, [CII] (158 μm), toward cool HI clouds.

Type
Part 2. Interstellar Medium
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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