EVOLUTION AND LIFETIME OF TRANSIENT CLUMPS IN THE TURBULENT INTERSTELLAR MEDIUM

Diego Falceta-Goncalves, A. Lazarian

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

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

Original languageEnglish
Article number99
Number of pages7
JournalAstrophysical Journal
Volume735
Issue number2
DOIs
Publication statusPublished - 10 Jul 2011

Keywords

  • ISM: clouds
  • ISM: kinematics and dynamics
  • magnetohydrodynamics (MHD)
  • methods: numerical
  • stars: formation
  • COMPRESSIBLE MAGNETOHYDRODYNAMIC TURBULENCE
  • MOLECULAR CLOUD CORES
  • PARTIALLY-IONIZED GAS
  • MASS-LOSS RATES
  • STAR-FORMATION
  • NUMERICAL SIMULATIONS
  • MAGNETIC-FIELD
  • ASTROPHYSICAL IMPLICATIONS
  • DENSITY-FLUCTUATIONS
  • PRESSURE CONFINEMENT

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