Ingalls,chamberlin,1

We report the detection of atomic carbon in a sample of eight southern hemisphere high Galactic latitude molecular clouds, using the Antarctic Submillimeter Telescope and Remote Observatory. The 492 GHz transition of [C I] was detected in all of the clouds observed. The C/CO column (3P 1 ] 3P 0 ) de...

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Bibliographic Details
Main Authors: Bania Jackson Department, James G. Ingalls, Richard A. Chamberlin, T. M. Bania, James, M. Jackson, Adair P. Lane, Antony, A. Stark
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
adair=cfa.harvard.edu
aas=cfa.harvard.edu
Antarctic
The Antarctic
Antarc*
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.41.3552
http://astro.uchicago.edu/cara/research/papers/astroapj479.pdf
Description
Summary:We report the detection of atomic carbon in a sample of eight southern hemisphere high Galactic latitude molecular clouds, using the Antarctic Submillimeter Telescope and Remote Observatory. The 492 GHz transition of [C I] was detected in all of the clouds observed. The C/CO column (3P 1 ] 3P 0 ) density ratio ranges from 0.4 to 2.5 and is similar to the values previously measured in high-latitude clouds MBM 12 and HD 210121. For all 10 high-latitude clouds observed in [C I], C/CO averages D1.2 and decreases with increasing total gas column density as predicted by translucent cloud models. N H , Quantitative comparison with chemical models of homogeneous clouds is unsatisfactory, however, and we conclude that the clumpy structure of clouds must be taken into account in order to interpret the data properly. Subject headings : ISM : abundances ISM : atoms ISM : clouds ISM : molecules infrared : ISM : lines and bands 1. INTRODUCTION The high Galactic latitude molecular clouds (.

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