Detection of HOCO+ in the protostar IRAS 16293-2422

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 (4 0,4-3 0,3) and (5 0,5-4 0,4) 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.

Accepted for publication in MNRAS on March 13th, 7 pages, 3 figures, 2 tables

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Cited by in corpus (10)

• Ingredients for Solar-like Systems: protostar IRAS 16293-2422 B versus comet 67P/Churyumov-Gerasimenko
• Discovery of the elusive carbonic acid (HOCOOH) in space
• Methyl cyanide (CH3CN) and propyne (CH3CCH) in the low mass protostar IRAS 16293-2422
• An Ammonia Spectral Map of the L1495-B218 Filaments in the Taurus Molecular Cloud: II CCS & HC${}_7$N Chemistry and Three Modes of Star Formation in the Filaments
• Modelling the abundance structure of isocyanic acid (HNCO) toward the low-mass solar type protostar IRAS 16293-2422
• Protonated CO2 in massive star-forming clumps
• ALCHEMI finds a "shocking" carbon footprint in the starburst galaxy NGC~253
• Chemical exploration of Galactic cold cores
• 3 mm Spectroscopic Observations of Massive Star-Forming Regions with IRAM 30-m
• Research on the Interstellar Medium and Star Formation in the Galaxy: An Indian Perspective