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Galactic Observations of Terahertz C+ (GOT C+):[CII] Detection of Warm “Dark Gas” in the ISM

Published online by Cambridge University Press:  25 November 2011

M. Röllig ,
R. Simon ,
V. Ossenkopf ,
J. Stutzki ,
W.D. Langer ,
T. Velusamy ,
J. Pineda ,
P. Goldsmith ,
D. Li  and
H.W. Yorke
W.D. Langer
Affiliation:
JPL-Caltech, MS 183-601, 4800 Oak Grove Dr., Pasadena, CA 91109, USA
T. Velusamy
Affiliation:
JPL-Caltech, MS 183-601, 4800 Oak Grove Dr., Pasadena, CA 91109, USA
J. Pineda
Affiliation:
JPL-Caltech, MS 183-601, 4800 Oak Grove Dr., Pasadena, CA 91109, USA
P. Goldsmith
Affiliation:
JPL-Caltech, MS 183-601, 4800 Oak Grove Dr., Pasadena, CA 91109, USA
D. Li
Affiliation:
JPL-Caltech, MS 183-601, 4800 Oak Grove Dr., Pasadena, CA 91109, USA
H.W. Yorke
Affiliation:
JPL-Caltech, MS 183-601, 4800 Oak Grove Dr., Pasadena, CA 91109, USA
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Abstract

The Herschel HIFI Key Program, Galactic Observations ofTerahertz C+ (GOT C+) is a survey of[CII] 1.9 THz emission throughout the Galaxy. Comparison of the first results of thissurvey with HI and CO isotopomer emission reveals excess [CII] emission beyond thatexpected from HI and CO layers alone, and is best explained as coming from a hidden layerof H2 gas, the so-called ISM “dark gas”.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 52: Conditions and Impact of Star Formation , 2011 , pp. 161 - 164
Copyright
© EAS, EDP Sciences 2011

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References

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