Fractional abundances of molecules in dense interstellar clouds: A compendium of recent model results
Department of Physics, The Ohio State University, Columbus, OH 43210, U.S.A.
2 Department of Astronomy, The Ohio State University, Columbus, OH 43210, U.S.A.
Send offprint request to: E. Herbst
Accepted: 21 February 1996
In this paper we present calculated fractional abundances in dense interstellar clouds for selected atomic and molecular species using three different homogeneous, pseudo-time-dependent models discussed by Bettens, Lee, & Herbst (1995): the new standard model, the new neutral-neutral model, and model 4. We have run each model with 3 different hydrogen densities – 103, 104, and 105 cm-3 – and two temperatures – 10 K and 50 K. “Low metal” elemental abundances have been used for all three models; the new standard model has also been run with “high metal” abundances.
Key words: ISM: clouds / ISM: abundances / ISM: molecules / molecular processes
© European Southern Observatory (ESO), 1996