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

W.D. Langer; T. Velusamy; J. Pineda; P. Goldsmith; D. Li; H.W. Yorke

doi:10.1051/eas/1152026

All issues

Volume 52 (2011)

EAS Publications Series, 52 (2011) 161-164

Abstract

Issue		EAS Publications Series Volume 52, 2011 Conditions and Impact of Star Formation


Page(s)		161 - 164
DOI		https://doi.org/10.1051/eas/1152026
Published online		25 November 2011

Conditions and Impact of Star Formation
M. Röllig, R. Simon, V. Ossenkopf and J. Stutzki (eds)
EAS Publications Series, 52 (2011) 161-164

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

W.D. Langer, T. Velusamy, J. Pineda, P. Goldsmith, D. Li and H.W. Yorke

JPL-Caltech, MS 183-601, 4800 Oak Grove Dr., Pasadena, CA 91109, USA

Abstract

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