Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/75608
Title: Hierarchical structure of the interstellar molecular clouds and star formation
Authors: Dudorov, A. E.
Khaibrakhmanov, S. A.
Issue Date: 2017
Publisher: De Gruyter Open Ltd
Citation: Dudorov A. E. Hierarchical structure of the interstellar molecular clouds and star formation / A. E. Dudorov, S. A. Khaibrakhmanov // Open Astronomy. — 2017. — Vol. 26. — Iss. 1. — P. 285-292.
Abstract: Properties of the hierarchical structures of interstellar molecular clouds are discussed. Particular attention is paid to the statistical correlations between velocity dispersion and size, and between the magnetic field strength and gas density. We investigate the formation of some hierarchical structures with the help of numerical MHD simulations using the ENLIL code. The simulations show that the interstellar molecular filaments with parallel magnetic field and molecular cores can form via the collapse and fragmentation of cylindrical molecular clouds. The parallelmagnetic field halts the radial collapse of the cylindrical cloud maintaining its nearly constant radius ~0.1 pc. The observed filaments with perpendicularmagnetic field can form as a result of themagnetostatic contraction of oblate molecular clouds under the action of Alfvén and MHD turbulence. The theoretical density profiles are fitted with the Plummer-like function and agree with observed profiles of the filaments in Gould's Belt. The characteristics of molecular cloud cores found in our simulations are in agreement with observations. Open Access. © 2017 A. E. Dudorov and S. A. Khaibrakhmanov, published by De Gruyter Open.
Keywords: FORMATION
GALAXIES
INSTABILITIES
ISM
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS (MHD)
STARS
URI: http://hdl.handle.net/10995/75608
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85042675149
WOS ID: 000427930200028
PURE ID: 6499117
ISSN: 2543-6376
DOI: 10.1515/astro-2017-0428
metadata.dc.description.sponsorship: Acknowledgment: The investigation of the protostellar disks evolution (section 5) is supported by Russian science foundation (project 15-12-10017). The authors thank prof. Andrey M. Sobolev for stimulating conversations.
RSCF project card: 15-12-10017
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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