Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Cooling behind mildly supersonic shocks in molecular clouds

Whitworth, Anthony Peter and Clarke, C. J. 1997. Cooling behind mildly supersonic shocks in molecular clouds. Monthly Notices of the Royal Astronomical Society 291 (3) , pp. 578-584. 10.1093/mnras/291.3.578

Full text not available from this repository.


Collisions between stable, thermally supported gas clumps produce shock-compressed layers. However, these layers then undergo gravitational fragmentation only if the gas cools — on a dynamical time-scale or faster — to below its pre-shock temperature. Here we present an approximate analytic treatment of post-shock cooling which demonstrates that, under the conditions prevailing in molecular clouds, where the typical collision speeds are ~ 1 km s−1, cooling by dust is likely to be the dominant cooling mechanism, and is sufficiently fast to satisfy this requirement. Cooling by CO appears to be of secondary importance.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: Oxford University Press
ISSN: 0035-8711
Last Modified: 04 Jun 2017 08:07

Citation Data

Cited 22 times in Google Scholar. View in Google Scholar

Cited 12 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item