Near-infrared observations of the massive star forming region IRAS 23151+5912

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 分子云与恒星形成研究团组

	Near-infrared observations of the massive star forming region IRAS 23151+5912
	Chen, XP; Yao, YQ
刊名	CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
	2004-06-01
卷号	4 期号:3 页码:284-298
关键词	infrared radiation stars : formation ISM : individual : IRAS 23151+5912 ISM : jets and outflows
ISSN号	1009-9271
英文摘要	Near-infrared images and K-band spectroscopy of the massive starforming region IRAS 23151+5912 are presented. The JHK' images reveal an embedded infrared cluster associated with infrared nebula, and the H-2 (2.12 mum) narrowband image provides for the first time evidence of outflow activity associated with the cluster. That the cluster is young can be shown by the high percentage of infrared excess sources and the outflow activity. We suggest an age of the cluster of similar to 10(6) yr. Eight young stars are found in the bright nebular core around IRAS 23151+5912. By the color-magnitude diagrams of the cluster, we found five high-mass YSOs and four intermediate-mass YSOs in the cluster. Eight H-2 emission features are discovered in the region with a scattered and non-axisymmetric distribution, indicating the existence of multiple outflows driven by the cluster. Diffuse H-2 emission detected to the north and to the west of the cluster may result from UV leakage of the cluster. Br-gamma, H-2, and CIV emission lines are found in the K-band spectrum of the brightest source, NIRS 19, indicating the presence of envelope, stellar wind, and shock in the circumstellar environment. We have estimated an 07-09 spectral type for the central massive YSO (20 similar to 30Mcircle dot), with an age of less than 1 x 106 yr.
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]	YOUNG STELLAR OBJECTS ; IRAS POINT SOURCES ; MOLECULAR-HYDROGEN EMISSION ; H-II-REGIONS ; H2O MASERS ; PROTOSTELLAR CANDIDATES ; RADIO-CONTINUUM ; IONIZING STAR ; K-BAND ; SPECTROSCOPY
收录类别	SCI
语种	英语
WOS记录号	WOS:000222201200010
公开日期	2012-12-22
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/7702]
专题	紫金山天文台_分子云与恒星形成研究团组
作者单位	Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Chen, XP,Yao, YQ. Near-infrared observations of the massive star forming region IRAS 23151+5912[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2004,4(3):284-298.
APA	Chen, XP,&Yao, YQ.(2004).Near-infrared observations of the massive star forming region IRAS 23151+5912.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,4(3),284-298.
MLA	Chen, XP,et al."Near-infrared observations of the massive star forming region IRAS 23151+5912".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 4.3(2004):284-298.