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题名: K'-band polarimetric imaging of S187IR and S233
作者: Jiang ZhiBo(江治波); Yao, YQ; Yang Ji(杨戟); Ishii, M; Nagata, T; Nakaya, H; Sato, S
刊名: ASTRONOMICAL JOURNAL
出版日期: 2001-07-01
卷号: 122, 期号:1, 页码:313-321
关键词: infrared radiation ; ISM : individual (S187, S233) ; ISM : lines and bands ; polarization ; reflection nebulae ; stars : formation
文章类型: Article
英文摘要: K'-band polarimetric images of star-forming regions S187 IR and S233 are presented. In S187 IR, a bipolar, near-infrared nebula is observed around IRAS 01202+6133, with the southern part being bright and knotty, and the northern part being faint and filamentary. The polarization pattern shows that the nebula is illuminated by a single near-infrared source, which is associated with IRAS 01202+6133. A polarization disk is found around this source with the disk plane roughly perpendicular to the axis of the bipolar nebula. We conclude that this source is the driving source of the outflow in the region. Two nebulae are detected in the S233 region. Associated with a compact infrared cluster, S233 A is roughly round in shape and shows a weak polarization pattern. The S233 B nebula shows roughly elongated geometry in the east-west direction. The polarization vectors divide it into three parts. Each part has distinctly different polarization from the others. The northeastern part of S233 B exhibits a centrosymmetric polarization pattern around a centroid, at which we locate a deeply embedded source (DES) undetected in the K' band and shorter wavelengths. The DES is likely the exciting source of water masers and outflows in the S233 B region. The western part of the nebula shows a parallel polarization pattern, but the southeastern part displays very little polarization. Comparison of the morphology and polarization of the nebulae in different star-forming regions suggests a close relationship between the evolutionary sequence of the young stellar objects and the morphology of the associated nebulae.
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 ; MOLECULAR OUTFLOW SOURCES ; STAR-FORMING REGIONS ; IRAS POINT SOURCES ; H-II REGIONS ; POLARIZATION MAPS ; INFRARED SOURCES ; BIPOLAR NEBULAE ; HII-REGIONS ; IRS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000169943300026
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15793
Appears in Collections:分子云与恒星形成研究团组_期刊论文

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作者单位: 1.Chinese Acad Sci, Natl Astron Observ, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Nagoya Univ, Fac Sci, Dept Astrophys, Nagoya, Aichi 4648602, Japan
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