Universität zu Köln

Kong, Shuo ORCID: 0000-0002-8469-2029, Ossenkopf-Okada, Volker ORCID: 0000-0002-8351-3877, Arce, Hector G., Bally, John, Sanchez-Monge, Alvaro ORCID: 0000-0002-3078-9482, McGehee, Peregrine ORCID: 0000-0003-0948-6716, Suri, Sumeyye, Klessen, Ralf S., Carpenter, John M., Lis, Dariusz C., Nakamura, Fumitaka, Schilke, Peter, Smith, Rowan J., Mairs, Steve ORCID: 0000-0002-6956-0730, Goodman, Alyssa and Maureira, Maria Jose ORCID: 0000-0002-7026-8163 (2021). The CARMA-NRO Orion Survey: Filament Formation via Collision-induced Magnetic Reconnection-the Stick in Orion A. Astrophys. J., 906 (2). BRISTOL: IOP PUBLISHING LTD. ISSN 1538-4357

Full text not available from this repository.

Abstract

A unique filament is identified in the Herschel maps of the Orion A giant molecular cloud. The filament, which we name the Stick, is ruler-straight and at an early evolutionary stage. Transverse position-velocity diagrams show two velocity components closing in on the Stick. The filament shows consecutive rings/forks in (CO)-O-18 (1-0) channel maps, which is reminiscent of structures generated by magnetic reconnection. We propose that the Stick formed via collision-induced magnetic reconnection (CMR). We use the magnetohydrodynamics code Athena++ to simulate the collision between two diffuse molecular clumps, each carrying an antiparallel magnetic field. The clump collision produces a narrow, straight, dense filament with a factor of >200 increase in density. The production of the dense gas is seven times faster than freefall collapse. The dense filament shows ring/fork-like structures in radiative transfer maps. Cores in the filament are confined by surface magnetic pressure. CMR can be an important dense-gas-producing mechanism in the Galaxy and beyond.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kong, Shuo UNSPECIFIED orcid.org/0000-0002-8469-2029 UNSPECIFIED Ossenkopf-Okada, Volker UNSPECIFIED orcid.org/0000-0002-8351-3877 UNSPECIFIED Arce, Hector G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bally, John UNSPECIFIED UNSPECIFIED UNSPECIFIED Sanchez-Monge, Alvaro UNSPECIFIED orcid.org/0000-0002-3078-9482 UNSPECIFIED McGehee, Peregrine UNSPECIFIED orcid.org/0000-0003-0948-6716 UNSPECIFIED Suri, Sumeyye UNSPECIFIED UNSPECIFIED UNSPECIFIED Klessen, Ralf S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Carpenter, John M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lis, Dariusz C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nakamura, Fumitaka UNSPECIFIED UNSPECIFIED UNSPECIFIED Schilke, Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED Smith, Rowan J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mairs, Steve UNSPECIFIED orcid.org/0000-0002-6956-0730 UNSPECIFIED Goodman, Alyssa UNSPECIFIED UNSPECIFIED UNSPECIFIED Maureira, Maria Jose UNSPECIFIED orcid.org/0000-0002-7026-8163 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-603683
DOI:	10.3847/1538-4357/abc687
Journal or Publication Title:	Astrophys. J.
Volume:	906
Number:	2
Date:	2021
Publisher:	IOP PUBLISHING LTD
Place of Publication:	BRISTOL
ISSN:	1538-4357
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language GIANT MOLECULAR CLOUDS; H I CLOUDS; STAR-FORMATION; H-2; SIMULATIONS; MECHANISM; FIELDS; CO Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/60368