PENG, T.-C.; BROUILLET, N.; FAVRE, C.; DESPOIS, D.; BAUDRY, Alain; REMIJAN, A.; WILSON, T.; WOOTTEN, A.

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PENG, T.-C.
Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
Université Sciences et Technologies - Bordeaux 1 [UB]
Observatoire aquitain des sciences de l'univers [OASU]

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

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

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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, #291 2011IAUS..280P.291P, 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, #291 2011IAUS..280P.291P, The Molecular Universe - IAU Symposium 280, Poster 74, Session 2., 2011, Tolede. 2011, vol. -, p. Poster 74

Résumé en anglais

The Orion Molecular Cloud (414 pc) is one of the most-studied astrophysical testbeds in the sky, where the interstellar medium interacts strongly with the ultraviolet radiation from the Trapezium cluster. Inside the cloud, the luminous Orion BN/KL region is well-known for its rich and complex chemistry, especially in the vicinity of the Orion hot molecular core, or Hot Core. It has been known that large oxygen- and nitrogen-bearing molecules have different distributions in this region, where N-bearing species are located near the Hot Core but O-bearing species are located close to the Orion Compact Ridge. However, (CH_3)_2CO (acetone) is one molecule which does not show this tendency. Therefore, it is of interest to carry out detailed study on the distribution of the acetone emission in the Orion BN/KL region. Our high-resolution images (1.8''× 0.8'') from the IRAM Plateau de Bure Interferometer show that the acetone emission is originated mostly from the southwest of the Hot Core and the regions close to the infrared sources IRc7 and IRc6, where the CS J=1-0 emission has been detected before. It also indicates that the acetone emission in the Orion BN/KL region is associated with dense cores in a size of a few hundred AU. We will discuss the velocity structure of the acetone emission and its physical properties in this region.< Réduire

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Unités de recherche

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