A study of interstellar carbonyl sulfide

Computer Science

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Atmospheric Chemistry, Emission Spectra, Interstellar Matter, Molecular Clouds, Carbonyl Compounds, Reaction Kinetics, Spectrum Analysis, Sulfides

Scientific paper

We have carried out a study of the carbonyl sulfide (OCS) molecule in 24 interstellar and circumstellar molecular clouds, and detected it in a total of 10 sources and 7 different transitions. Analysis of the data using hydrogen densities derived from a study of CS (Linke and Goldsmith 1980), and assuming that the OCS lines are optically thin, yields a mean column density N(OCS)= 3 x 10 to the 14th power/sq cm in ten interstellar clouds while the average fractional abundance N(OCS)/N(H2)= 1.6 x 10 to the minus 9th power, consistent with the theoretical prediction of Oppenheimer and Dalgarno (1974). The results of maps and analysis of multiple transitions in several sources suggest that the regions responsible for the OCS emission are only marginally resolved with a beamsize of approx. 2'. Direct measurements yield (OCS/O13CS) = 21 and (OCS/OC34S) = 16 in SGR B2, compared to terrestrial values of 89 and 23, respectively.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

A study of interstellar carbonyl sulfide does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A study of interstellar carbonyl sulfide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A study of interstellar carbonyl sulfide will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-909625

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.