Observations of SO2 and HCS+ in cold molecular clouds.
Abstract
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.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- October 1983
- Bibcode:
- 1983A&A...127L..10I
- Keywords:
-
- Interstellar Matter;
- Molecular Clouds;
- Orion Nebula;
- Radio Spectra;
- Sulfur Dioxides;
- Abundance;
- Astronomical Spectroscopy;
- Interstellar Chemistry;
- Molecular Rotation;
- Molecular Spectra;
- Radio Astronomy;
- Astrophysics