EVOLUTION AND LIFETIME OF TRANSIENT CLUMPS IN THE TURBULENT INTERSTELLAR MEDIUM

Diego Falceta-Goncalves; A. Lazarian

doi:10.1088/0004-637X/735/2/99

EVOLUTION AND LIFETIME OF TRANSIENT CLUMPS IN THE TURBULENT INTERSTELLAR MEDIUM

Diego Falceta-Goncalves, A. Lazarian

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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 language	English
Article number	99
Number of pages	7
Journal	Astrophysical Journal
Volume	735
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/735/2/99
Publication status	Published - 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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title = "EVOLUTION AND LIFETIME OF TRANSIENT CLUMPS IN THE TURBULENT INTERSTELLAR MEDIUM",

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.",

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author = "Diego Falceta-Goncalves and A. Lazarian",

year = "2011",

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doi = "10.1088/0004-637X/735/2/99",

language = "English",

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T1 - EVOLUTION AND LIFETIME OF TRANSIENT CLUMPS IN THE TURBULENT INTERSTELLAR MEDIUM

AU - Falceta-Goncalves, Diego

AU - Lazarian, A.

PY - 2011/7/10

Y1 - 2011/7/10

N2 - 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.

AB - 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.

KW - ISM: clouds

KW - ISM: kinematics and dynamics

KW - magnetohydrodynamics (MHD)

KW - methods: numerical

KW - stars: formation

KW - COMPRESSIBLE MAGNETOHYDRODYNAMIC TURBULENCE

KW - MOLECULAR CLOUD CORES

KW - PARTIALLY-IONIZED GAS

KW - MASS-LOSS RATES

KW - STAR-FORMATION

KW - NUMERICAL SIMULATIONS

KW - MAGNETIC-FIELD

KW - ASTROPHYSICAL IMPLICATIONS

KW - DENSITY-FLUCTUATIONS

KW - PRESSURE CONFINEMENT

U2 - 10.1088/0004-637X/735/2/99

DO - 10.1088/0004-637X/735/2/99

M3 - Article

SN - 0004-637X

VL - 735

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 99

ER -

EVOLUTION AND LIFETIME OF TRANSIENT CLUMPS IN THE TURBULENT INTERSTELLAR MEDIUM

Abstract

Keywords

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