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Helmich, F. Wyrowski, G.A. Blake, G. Melnick, H. Yorke, J. Cernicharo, J. Pearson, J. Zmuidzinas, K. Demyk, K. Edwards, K. Schuster, L.A. Samoska, L. Pagani, M. Benedettini, M. Emprechtinger, M. Gerin, M.H.D. van der Wiel, M. Kama, M. Salez, N. Crimier, P. Caselli, P. Encrenaz, P.F. Goldsmith, P. Hennebelle, P. Hily-Blant, P. Morris, P. Saraceno, P. Schilke, R. Rolffs, S. Bottinelli, S. Cabrit, S. Lord, S. Maret, S. Pacheco, S. Viti, T. Bell, T. Henning, T. Jacq, T. Philips, V. Wakelam, W. Langer","submitted_at":"2010-07-09T09:31:55Z","abstract_excerpt":"In contrast to extensively studied dense star-forming cores, little is known about diffuse gas surrounding star-forming regions. We study molecular gas in the high-mass star-forming region NGC6334I, which contains diffuse, quiescent components that are inconspicuous in widely used molecular tracers such as CO. We present Herschel/HIFI observations of CH toward NGC6334I observed as part of the CHESS key program. 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