Thermal instability in molecular clouds

Details Thermal instability in molecular clouds Thermal instability in molecular clouds

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...283..679g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 283, Aug. 15, 1984, p. 679-686.

Astronomy and Astrophysics

Astrophysics

23

Interstellar Gas, Molecular Clouds, Thermal Stability, Computerized Simulation, Condensation, Cooling, Gas Dynamics, Gas Temperature

Scientific paper

The cooling function for molecular gas is calculated, and it is found that in environments where CO cooling dominates, molecular gas may be thermally unstable. Two regimes of the condensation mode are isolated; isochorically cooling gas with temperature 10 < T < 200K and density n(H2) ⪉ 105cm-3, and thermally equilibrated gas with temperature 35 < T 75K and density near 1000 cm-3. It is suggested that thermal instability may be an important source of small-scale structure in fully molecular clouds.

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