Star Formation Triggered by Low-Mass Clump Collisions

Kitsionas, Spyridon
Whitworth, Anthony Peter

Publication date

January 2003

Abstract

We investigate by means of high-resolution numerical simulations the phenomenology of star formation triggered by low-velocity collisions between low-mass molecular clumps. The simulations are performed using an SPH code which satisfies the Jeans condition by invoking On-the-Fly Particle Splitting (Kitsionas & Whitworth 2002). The efficiency of star formation appears to increase with increasing clump mass and/or decreasing impact parameter b and/or increasing clump velocity. For b<0.5 the collisions produce shock-compressed layers which fragment into filaments that break up into cores. Protostellar objects then condense out of the cores and accrete from them. The resulting accretion rates are comparable to those of Class 0 objects. The d...

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Star Formation Triggered by Low-Mass Clump Collisions

Abstract

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Star Formation Triggered by Low-Mass Clump Collisions

Abstract

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