BOTTINELLI, S.; CAUX, Christophe; WAKELAM, Valentine; CECCARELLI, C.; KAHANE, C.

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BOTTINELLI, S.
Centre d'étude spatiale des rayonnements [CESR]

CAUX, Christophe
Laboratoire d'Informatique, de Modélisation et d'optimisation des Systèmes [LIMOS]

WAKELAM, Valentine
Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
Observatoire aquitain des sciences de l'univers [OASU]
Université Sciences et Technologies - Bordeaux 1 [UB]
Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]

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Ce document a été publié dans

The Molecular Universe, Posters from the proceedings of the 280th Symposium of the International Astronomical Union held in Toledo, Spain, May 30-June 3, 2011, #101 - IAU Symposium 280, Poster 8, Session 1. - 2011IAUS..280P.101B, The Molecular Universe, Posters from the proceedings of the 280th Symposium of the International Astronomical Union held in Toledo, Spain, May 30-June 3, 2011, #101 - IAU Symposium 280, Poster 8, Session 1. - 2011IAUS..280P.101B, 2011IAUS..280P.101B - The Molecular Universe, 2011, Tolede. 2011-05, vol. 280, p. 101P

Résumé en anglais

We present high spectral resolution observations of CH absorption towards the low-mass protostar IRAS16293-2422. The data were obtained with the High Resolution Spectrometer (HRS) module of the Heterodyne Instrument for the Far-Infrared (HIFI) on-board Herschel, as part of the CHESS (Chemical HErschel Surveys of Star-forming regions) guaranteed time key program. CH is well known for having column densities correlated with those of H_2 and for its role as a product in the ion-molecule gas-phase chemistry. We derive CH column densities in the envelope of IRAS16293-2422, and investigate the implications when comparing with column densities of H_2 and of other carbon species such as CN or CCH. We also discuss the non-detections of CD and CH^+.< Réduire

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Laboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804