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:
CreatorsEmailORCIDORCID Put Code
Kong, ShuoUNSPECIFIEDorcid.org/0000-0002-8469-2029UNSPECIFIED
Ossenkopf-Okada, VolkerUNSPECIFIEDorcid.org/0000-0002-8351-3877UNSPECIFIED
Arce, Hector G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bally, JohnUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sanchez-Monge, AlvaroUNSPECIFIEDorcid.org/0000-0002-3078-9482UNSPECIFIED
McGehee, PeregrineUNSPECIFIEDorcid.org/0000-0003-0948-6716UNSPECIFIED
Suri, SumeyyeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Klessen, Ralf S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Carpenter, John M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lis, Dariusz C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nakamura, FumitakaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schilke, PeterUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Smith, Rowan J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mairs, SteveUNSPECIFIEDorcid.org/0000-0002-6956-0730UNSPECIFIED
Goodman, AlyssaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Maureira, Maria JoseUNSPECIFIEDorcid.org/0000-0002-7026-8163UNSPECIFIED
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:
KeywordsLanguage
GIANT MOLECULAR CLOUDS; H I CLOUDS; STAR-FORMATION; H-2; SIMULATIONS; MECHANISM; FIELDS; COMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/60368

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item