Large-scale periodic velocity oscillation in the filamentary cloud G350.54+0.69

doi:10.1093/mnras/stz1340

CORC > 国家天文台 > 中国科学院国家天文台

	Large-scale periodic velocity oscillation in the filamentary cloud G350.54+0.69
	Liu, Hong-Li 1,2,3; Stutz, Amelia 3,4; Yuan, Jing-Hua 5
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2019-07-01
卷号	487 期号:1 页码:1259-1268
关键词	stars: formation ISM: clouds ISM: individual objects: G350.54+0.69 ISM: molecules ISM: structure infrared: ISM
ISSN号	0035-8711
DOI	10.1093/mnras/stz1340
英文摘要	We use APEX mapping observations of (CO)-C-13 and (CO)-O-18 (2-1) to investigate the internal gas kinematics of the filamentary cloud G350.54+0.69, composed of the two distinct filaments G350.5-N and G350.5-S. G350.54+0.69 as a whole is supersonic and gravitationally bound. We find a large-scale periodic velocity oscillation along the entire G350.5-N filament with a wavelength of similar to 1.3 pc and an amplitude of similar to 0.12 km s(-1). Comparing with gravitational-instability-induced core formation models, we conjecture that this periodic velocity oscillation could be driven by a combination of longitudinal gravitational instability and a large-scale periodic physical oscillation along the filament. The latter may be an example of a magnetohydrodynamic transverse wave. This hypothesis can be tested with Zeeman and dust polarization measurements.
资助项目	Chinese Academy of Sciences (CAS) ; Fondecyt[1180350] ; Concurso Proyectos Internacionales de Investigacion'[PII20150171] ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA) BASAL grant[AFB-170002] ; National Natural Science Foundation of China[11503035] ; National Natural Science Foundation of China[11573036]
WOS关键词	MAGNETIC-FIELDS ; MOLECULAR CLOUDS ; HELICAL FIELDS ; STAR-FORMATION ; FRAGMENTATION ; ORION ; INSTABILITIES ; TENSION ; DENSITY
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000474907100098
资助机构	Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Fondecyt ; Fondecyt ; Concurso Proyectos Internacionales de Investigacion' ; Concurso Proyectos Internacionales de Investigacion' ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA) BASAL grant ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA) BASAL grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Fondecyt ; Fondecyt ; Concurso Proyectos Internacionales de Investigacion' ; Concurso Proyectos Internacionales de Investigacion' ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA) BASAL grant ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA) BASAL grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Fondecyt ; Fondecyt ; Concurso Proyectos Internacionales de Investigacion' ; Concurso Proyectos Internacionales de Investigacion' ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA) BASAL grant ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA) BASAL grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Fondecyt ; Fondecyt ; Concurso Proyectos Internacionales de Investigacion' ; Concurso Proyectos Internacionales de Investigacion' ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA) BASAL grant ; Chilean Centro de Excelencia en Astrofisica y Tecnologias Afines (CATA) BASAL grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/26658]
专题	中国科学院国家天文台
通讯作者	Liu, Hong-Li; Stutz, Amelia
作者单位	1.Chinese Acad Sci South Amer Ctr Astron, China Chile Joint Ctr Astron, Camino Observ 1515, Santiago, Chile 2.Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China 3.Univ Concepcion, Dept Astron, Ave Esteban Iturra S-N,Dist Univ 160-C, Concepcion, Chile 4.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany 5.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Liu, Hong-Li,Stutz, Amelia,Yuan, Jing-Hua. Large-scale periodic velocity oscillation in the filamentary cloud G350.54+0.69[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,487(1):1259-1268.
APA	Liu, Hong-Li,Stutz, Amelia,&Yuan, Jing-Hua.(2019).Large-scale periodic velocity oscillation in the filamentary cloud G350.54+0.69.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,487(1),1259-1268.
MLA	Liu, Hong-Li,et al."Large-scale periodic velocity oscillation in the filamentary cloud G350.54+0.69".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 487.1(2019):1259-1268.