Cooling and heating of molecular clouds behind shock waves.

Details Cooling and heating of molecular clouds behind shock waves. Cooling and heating of molecular clouds behind shock waves.

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993acasn..34..255z&link_type=abstract

Acta Astron. Sin., Vol. 34, No. 3, p. 255 - 265

Astronomy and Astrophysics

Astronomy

Scientific paper

Based on the shock mode, molecular hydrogen is dissociated and all atomic hydrogen is ionized behind a shock front when the shock velocity is more than 100 km/s. Considering several typical heating and cooling mechanisms of molecular clouds, solving the time-independence hydrodynamic equations, the authors have got the cooling and heating processes between 4×105K and 80K and the evolving curves of several kinds of number densities, nH+, nH, nH2 and cooling rates with temperature. Comparing the distribution curves with distance from the shock front under different initial number densities (n0) of clouds, they have found that the higher the number density is, the smaller the cooling scale of molecular cloud is.

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