SIMBAD references

2017ApJ...835..137W - Astrophys. J., 835, 137-137 (2017/February-1)

GMC collisions as triggers of star formation. II. 3D turbulent, magnetized simulations.

WU B., TAN J.C., NAKAMURA F., VAN LOO S., CHRISTIE D. and COLLINS D.

Abstract (from CDS):

We investigate giant molecular cloud collisions and their ability to induce gravitational instability and thus star formation. This mechanism may be a major driver of star formation activity in galactic disks. We carry out a series of 3D, magnetohydrodynamics (MHD), adaptive mesh refinement simulations to study how cloud collisions trigger formation of dense filaments and clumps. Heating and cooling functions are implemented based on photo-dissociation region models that span the atomic-to-molecular transition and can return detailed diagnostic information. The clouds are initialized with supersonic turbulence and a range of magnetic field strengths and orientations. Collisions at various velocities and impact parameters are investigated. Comparing and contrasting colliding and non-colliding cases, we characterize morphologies of dense gas, magnetic field structure, cloud kinematic signatures, and cloud dynamics. We present key observational diagnostics of cloud collisions, especially: relative orientations between magnetic fields and density structures, like filaments; 13CO(J = 2-1), 13CO(J = 3-2), and 12CO(J = 8-7) integrated intensity maps and spectra; and cloud virial parameters. We compare these results to observed Galactic clouds.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): ISM: clouds - ISM: kinematics and dynamics - ISM: lines and bands - ISM: magnetic fields - ISM: structure - methods: numerical - methods: numerical

Simbad objects: 8

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2023.02.03-21:31:02

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