Observations of the H2S toward OMC-1

Details Observations of the H2S toward OMC-1 Observations of the H2S toward OMC-1

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...360..136m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 360, Sept. 1, 1990, p. 136-141.

Astronomy and Astrophysics

Astrophysics

42

Hydrogen Sulfide, Interstellar Gas, Molecular Clouds, Orion Nebula, Brightness Temperature, Deuterium, Interstellar Chemistry, Sulfur Isotopes

Scientific paper

Observations of the 1(10) - 1(01) transition of interstellar H2S and its isotopes toward OMC-1 are reported. The fractional abundance of H2S in the quiescent regions of OMC-1 seems difficult to explain by currently known ion-molecular reactions. The fractional abundance of H2S relative to H2 is enhanced by a factor of 1000 in the hot core and the plateau relative to the quiescent clouds. The (HDS)/(H2S) abundance ratio in the hot core is estimated at 0.02 or less.

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