Molecular outflows around high-mass young stellar objects

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 紫金山天文台青海观测站

	Molecular outflows around high-mass young stellar objects
	Xu, Y.; Shen, Z. -Q.; Yang, J.; Zheng, X. W.; Miyazaki, A.; Sunada, K.; Ma, H. J.; Li, J. J.; Sun, J. X.; Pei, C. C.
刊名	ASTRONOMICAL JOURNAL
	2006-07-01
卷号	132 期号:1 页码:20-26
关键词	ISM : clouds ISM : jets and outflows stars : formation
ISSN号	0004-6256
英文摘要	We present a study of molecular outflows using high-resolution mapping of the CO (1-0) line emission toward eight relatively nearby 6.7 GHz methanol masers that are associated with massive star-forming regions. Outflows were detected in seven out of eight sources, and five of them clearly show bipolar or multiple outflow morphologies. These outflows have typical masses of a few solar masses, momenta of tens of M(circle dot) km s(-1), kinetic energies of similar to 10(45) ergs, and mass entrainment rates of a few 10(-5) M(circle dot) yr(-1). They have significantly more mass and kinetic energy than their low-mass counterparts. In some of the sources, the massive outflow is obviously associated with a particular massive star in the cluster, while in others the origin remains uncertain. The high detection rate of outflows toward methanol masers suggests that the outflow phase of massive protostars encompasses the methanol maser phase.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	H-II REGIONS ; STAR-FORMING REGIONS ; FAR-INFRARED SOURCES ; CEPHEUS-A OUTFLOW ; COLD IRAS SOURCES ; MONOCEROS R2 ; VLBI OBSERVATIONS ; PROTOSTELLAR CANDIDATES ; RADIO-CONTINUUM ; DENSE CORES
收录类别	SCI
语种	英语
WOS记录号	WOS:000239053700003
公开日期	2012-02-07
内容类型	期刊论文
源URL	[http://159.226.72.40/handle/332002/3476]
专题	紫金山天文台_紫金山天文台青海观测站
作者单位	1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 20030, Peoples R China 2.Max Planck Inst Radioastron, D-53121 Bonn, Germany 3.Purple Mt Observ, Nanjing 210008, Peoples R China 4.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China 5.Nobeyama Radio Observ, Nagano 38413, Japan 6.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Xu, Y.,Shen, Z. -Q.,Yang, J.,et al. Molecular outflows around high-mass young stellar objects[J]. ASTRONOMICAL JOURNAL,2006,132(1):20-26.
APA	Xu, Y..,Shen, Z. -Q..,Yang, J..,Zheng, X. W..,Miyazaki, A..,...&Pei, C. C..(2006).Molecular outflows around high-mass young stellar objects.ASTRONOMICAL JOURNAL,132(1),20-26.
MLA	Xu, Y.,et al."Molecular outflows around high-mass young stellar objects".ASTRONOMICAL JOURNAL 132.1(2006):20-26.