Detection of HOCO+ in the protostar IRAS 16293-2422
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en
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Ce document a été publié dans
Monthly Notices of the Royal Astronomical Society. 2018-03-15, vol. 477, n° 1, p. 525-530
Oxford University Press (OUP): Policy P - Oxford Open Option A
Résumé en anglais
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 ...Lire la suite >
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.< Réduire
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