GRATIER, P.; MAJUMDAR, Liton; OHISHI, M.; ROUEFF, E.; LOISON, J. C.; HICKSON, K. M.; WAKELAM, Valentine

doi:10.3847/0067-0049/225/2/25

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GRATIER, P.
AMOR 2016

MAJUMDAR, Liton
AMOR 2016

OHISHI, M.

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The Astrophysical Journal Supplement. 2016-08, vol. 225, n° 2, p. id. 25

American Astronomical Society

Résumé en anglais

Recent detections of complex organic molecules in dark clouds have rekindled interest in the astrochemical modeling of these environments. Because of its relative closeness and rich molecular complexity, TMC-1 has been extensively observed to study the chemical processes taking place in dark clouds. We use local thermodynamical equilibrium radiative transfer modeling coupled with a Bayesian statistical method which takes into account outliers to analyze the data from the Nobeyama spectral survey of TMC-1 between 8 and 50 GHz. We compute the abundance relative to molecular hydrogen of 57 molecules, including 19 isotopologues in TMC-1 along with their associated uncertainty. The new results are in general agreement with previous abundance determination from Ohishi & Kaifu and the values reported in the review from Agúndez & Wakelam. However, in some cases, large opacity and low signal to noise effects allow only upper or lower limits to be derived, respectively.< Réduire

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ISM: abundances

astrochemistry

methods: statistical

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A NEW REFERENCE CHEMICAL COMPOSITION FOR TMC-1

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