Evolution and lifetime of transient clumps in the turbulent interstellar medium

Abstract

We study the evolution of dense clumps and provide argument that the existence of the clumps is not limited by the crossing time of the clump. We claim that the lifetimes of the clumps are determined by the turbulent motions on larger scale and predict the correlation of the clump lifetime and its column density. We use numerical simulations and successfully test this relation. In addition, we study the morphological asymmetry and the magnetization of the clumps as a function of their masses.

accepted for publication by ApJ

References in corpus (13)

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• Statistics of Core Lifetimes in Numerical Simulations of Turbulent, Magnetically Supercritical Molecular Clouds
• Turbulence and the formation of filaments, loops and shock fronts in NGC 1275 in the Perseus Galaxy Cluster
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• Dust clearing by radial drift in evolving protoplanetary discs
• The onset of large scale turbulence in the interstellar medium of spiral galaxies
• The mass loss process in dwarf galaxies from 3D hydrodynamical simulations: the role of dark matter and starbursts
• Modeling Star Formation as a Markov Process in a Supersonic Gravoturbulent Medium
• On the alignment of PNe and local magnetic field at the galactic centre: MHD numerical simulations