A time-dependent model for the chemical composition of interstellar molecular clouds

Details A time-dependent model for the chemical composition of interstellar molecular clouds A time-dependent model for the chemical composition of interstellar molecular clouds

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.189..135w&link_type=abstract

In ESA The Sci. Importance of Submillimetre Observations p 135-140 (SEE N83-22034 11-88)

Astronomy and Astrophysics

Astronomy

Astronomical Models, Chemical Composition, Molecular Clouds, Time Dependence, Chemical Reactions, Coefficients, Collapse, Comparison, Computer Programs, Conservation Equations, Differential Equations, Steady State

Scientific paper

A computer program was constructed to deal with the time-dependent integration of molecular species formation in a variety of interstellar clouds. The data contains over 1400 chemical reactions for the formation and destruction of 89 different molecular species. We have found that over a large range of cloud density and kinetic temperature the resultant chemical abundances reach a steady-state equilibrium value by 10 to the 7th power years or less. The approach to this equilibrium is a highly sensitive function of the initial elemental abundances. Preliminary investigations using time-dependent methods with constant temperature and density models were compared with equilibrium results from time-dependent models and the results are in satisfactory agreement. The model is currently being modified to deal with the rapidly changing temperature and density conditions occurring behind an interstellar shock front, and the resulting effects on the chemistry.

Affiliated with

Also associated with

No associations

Rating

A time-dependent model for the chemical composition of interstellar molecular clouds 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 time-dependent model for the chemical composition of interstellar molecular clouds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A time-dependent model for the chemical composition of interstellar molecular clouds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-900530