MAJUMDAR, Liton; GRATIER, P.; ANDRON, I.; WAKELAM, Valentine; CAUX, E.

doi:10.1093/mnras/stx259

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MAJUMDAR, Liton
AMOR 2017

GRATIER, P.
AMOR 2017

ANDRON, I.

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Monthly Notices of the Royal Astronomical Society. 2017-01, vol. 467, n° 3, p. 3525-3532

Oxford University Press (OUP): Policy P - Oxford Open Option A

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Cyclic-C3HD (c-C3HD) is a singly deuterated isotopologue of c-C3H2, which is one of the most abundant and widespread molecules in our Galaxy. We observed IRAS 16293-2422 in the 3 mm band with a single frequency setup using the EMIR heterodyne 3 mm receiver of the IRAM 30m telescope. We observed seven lines of c-C3HD and three lines of c-C3H2. Observed abundances are compared with astrochemical simulations using the NAUTILUS gas-grain chemical model. Our results clearly show that c-C3HD can be used as an important supplement for studying chemistry and physical conditions for cold environments. Assuming that the size of the protostellar envelope is 3000 AU and same excitation temperatures for both c-C3H2 and c-C3HD, we obtain a deuterium fraction of $14_{-3}^{+4}\%$.< Leer menos

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Astrophysics - Astrophysics of Galaxies

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A study of singly deuterated cyclopropenylidene c-C3HD in protostar IRAS 16293-2422

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