Observations of SO2 and HCS(+) in cold molecular clouds

Details Observations of SO2 and HCS(+) in cold molecular clouds Observations of SO2 and HCS(+) in cold molecular clouds

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...127l..10i&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 127, no. 1, Oct. 1983, p. L10-L13.

Astronomy and Astrophysics

Astronomy

27

Interstellar Matter, Molecular Clouds, Orion Nebula, Radio Spectra, Sulfur Dioxides, Abundance, Astronomical Spectroscopy, Interstellar Chemistry, Molecular Rotation, Molecular Spectra, Radio Astronomy

Scientific paper

The authors report the first instance of SO2 emission from a dark dust cloud (L183), and the first astronomical detections of the J = 1 - 0 rotational transition of the HCS+ ion and the J = 16 - 15 transition of HC5N, both towards the cold cloud TMC-1. The [HCS+]/[CS] abundance ratio in TMC-1 is ⪆0.1. Unlike HCS+ and the cyanopolyynes, SO2 appears to be more abundant in L183 than in TMC-1. SO2 was also detected in the Orion ambient molecular cloud and in the Rho Oph cloud.

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