Shock strengths in clumps impacted by winds of increasing power

Details Shock strengths in clumps impacted by winds of increasing power Shock strengths in clumps impacted by winds of increasing power

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001mnras.326.1110l&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 326, Issue 3, pp. 1110-1114.

Astronomy and Astrophysics

Astronomy

3

Hydrodynamics, Ism: General, Ism: Kinematics And Dynamics

Scientific paper

We have performed spherically symmetric and axisymetric hydrodynamic simulations of wind-clump interactions in order to determine the conditions under which a wind, impacting upon a clump and increasing in power with time, drives a strong shock into the clump. If the wind ram pressure and the clump thermal pressure are comparable when the impact first occurs, then the wind ram pressure must increase on a time-scale markedly smaller than the sound-crossing time of the clump if it is to drive a shock that becomes strong at any point in the clump. We comment on the possible relevance of this result for the dynamics and chemistry of hot cores in regions of high-mass star formation.

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