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Large column densities and [12CII] 158 μm self-absorption in Orion B

Published online by Cambridge University Press:  21 March 2013

J. Stutzki ,
U. U. Graf ,
R. Simon ,
S. W. J. Colgan ,
X. Guan ,
R. Güsten  and
C. E. Honingh
J. Stutzki
Affiliation:
I. Physikalisches Institut der Universitẗ zu Köln, Zülpicher Straße 77, D50937 Köln, Germany email: [email protected]
U. U. Graf
Affiliation:
I. Physikalisches Institut der Universitẗ zu Köln, Zülpicher Straße 77, D50937 Köln, Germany email: [email protected]
R. Simon
Affiliation:
I. Physikalisches Institut der Universitẗ zu Köln, Zülpicher Straße 77, D50937 Köln, Germany email: [email protected]
S. W. J. Colgan
Affiliation:
NASA Ames Research Center, Moffett Field, CA, USA
X. Guan
Affiliation:
I. Physikalisches Institut der Universitẗ zu Köln, Zülpicher Straße 77, D50937 Köln, Germany email: [email protected]
R. Güsten
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D53121 Bonn, Germany
C. E. Honingh
Affiliation:
I. Physikalisches Institut der Universitẗ zu Köln, Zülpicher Straße 77, D50937 Köln, Germany email: [email protected]
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Abstract

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We present a preliminary analysis of the self-absorbed [CII]-spectra observed with SOFIA/GREAT towards NGC 2024. Together with the detected [13CII] hyperfine satellites, the observed spectra require surprisingly high column densities of C+, both in the warm core and the foreground absorption component. Such high column densities are a challenge to explain with present state-of-the-art PDR models of the UV/molecular cloud interaction.

Keywords

ISM: molecules — ISM: clouds — ISM: individual (Orion B)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S292: Molecular Gas, Dust, and Star Formation in Galaxies , August 2012 , pp. 57 - 58
Copyright
Copyright © International Astronomical Union 2013

References

Cooksy, A. I., Blake, G. A., & Saykally, R., ApJ 305, L89, 1986Google Scholar
Crawford, M. K., Genzel, R., Townes, C. H., & Watson, M., ApJ 291, 755, 1985Google Scholar
Graf, U. U., Simon, R., Stutzki, J., et al., A&A 542, L16, 2012Google Scholar
Graf, U. U., Eckart, A., Genzel, R.et al., ApJ 405, 249, 1993CrossRefGoogle Scholar
Jaffe, D. T., Zhou, S., Howe, J. E., et al., ApJ 436, 203, 1994Google Scholar
Russell, R. W., Melnick, G., Gull, G. E., & Harwit, M., ApJ 240, L99, 1980CrossRefGoogle Scholar