Detection of HOCO+ in the protostar IRAS 16293-2422

M Majumdar P. Gratier 1 Valentine Wakelam 1 M Caux K Willacy M Ressler
1 AMOR 2018
LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac]
Abstract : The protonated form of CO2, HOCO+, is assumed to be an indirect tracer of CO2 in the millimeter/submillimeter regime since CO2 lacks a permanent dipole moment. Here, we report the detection of two rotational emission lines (40, 4-30, 3 and 50, 5-40, 4) of HOCO+ in IRAS 16293-2422. For our observations, we have used EMIR heterodyne 3 mm receiver of the IRAM 30m telescope. The observed abundance of HOCO+ is compared with the simulations using the 3-phase NAUTILUS chemical model. Implications of the measured abundances of HOCO+ to study the chemistry of CO2 ices using JWST-MIRI and NIRSpec are discussed as well.
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Article dans une revue
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2018, 477 (1), pp.525-530. 〈10.1093/mnras/sty703〉
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https://hal.archives-ouvertes.fr/hal-01742764
Contributeur : Marie-Paule Pomies <>
Soumis le : lundi 26 mars 2018 - 08:51:10
Dernière modification le : mardi 29 mai 2018 - 12:51:09

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M Majumdar, P. Gratier, Valentine Wakelam, M Caux, K Willacy, et al.. Detection of HOCO+ in the protostar IRAS 16293-2422. Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2018, 477 (1), pp.525-530. 〈10.1093/mnras/sty703〉. 〈hal-01742764〉

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