Filament formation via collision-induced magnetic reconnection – formation of a star cluster

Author:

Kong Shuo1ORCID,Whitworth David J23ORCID,Smith Rowan J23ORCID,Hamden Erika T1

Affiliation:

1. Steward Observatory, University of Arizona , Tucson, AZ 85719, USA

2. Universitat Heidelberg, Zentrum fur Astronomie, Institut fur Theoretische Astrophysik , Albert-Ueberle-Str. 2, 69120 Heidelberg, Germany

3. Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester , Oxford Road, Manchester M13 9PL, UK

Abstract

ABSTRACT A collision-induced magnetic reconnection (CMR) mechanism was recently proposed to explain the formation of a filament in the Orion A molecular cloud. In this mechanism, a collision between two clouds with antiparallel magnetic fields produces a dense filament due to the magnetic tension of the reconnected fields. The filament contains fiber-like sub-structures and is confined by a helical magnetic field. To show whether the dense filament is capable of forming stars, we use the arepo code with sink particles to model star formation following the formation of the CMR-filament. First, the CMR-filament formation is confirmed with arepo. Secondly, the filament is able to form a star cluster after it collapses along its main axis. Compared to the control model without magnetic fields, the CMR model shows two distinctive features. First, the CMR-cluster is confined to a factor of ∼4 smaller volume. The confinement is due to the combination of the helical field and gravity. Secondly, the CMR model has a factor of ∼2 lower star formation rate. The slower star formation is again due to the surface helical field that hinders gas inflow from larger scales. Mass is only supplied to the accreting cluster through streamers.

Funder

University of Arizona

STFC

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Plasmoid Instability in the Multiphase Interstellar Medium;The Astrophysical Journal Letters;2023-05-01

2. CMR Exploration. I. Filament Structure with Synthetic Observations;The Astrophysical Journal Supplement Series;2023-04-01

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3