Herbig-Haro objects HH 434-436: Part of a giant flow driven by the central source A/B of IRAS 04325+2402?

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	Herbig-Haro objects HH 434-436: Part of a giant flow driven by the central source A/B of IRAS 04325+2402?
	Wang, HC; Yang, J; Wang, M; Deng, LC ; Yan, J ; Chen, JS
刊名	ASTRONOMICAL JOURNAL
	2001-03-01
卷号	121 期号:3 页码:1551-1555
关键词	ISM : Herbig-Haro objects ISM : jets and outflows stars : formation stars : pre-main-sequence
ISSN号	0004-6256
英文摘要	While carrying out a wide-field survey of nearby star-forming regions for Herbig-Haro (HH) objects we discovered three Herbig-Haro objects, HH 434-436, in a similar to2' x 2' (0.08 x 0.08 pc) region near L1536. HH 434 consists of three knots. HH 435 shows a bow shock shape, and HH 436 is an elongated patch. Spectroscopic observations indicate that the excitation levels of HH 434-436 are different : HH 436 has a high excitation level, while 434A has an intermediate, and 435 has a low excitation level. The overall morphology of HH 434-436 shows a bow shock shape and suggests that HH 434-436 may be a single bow shock fragmented into separate knots. Near-infrared observations of the region in the JHK' broad bands and H-2 upsilon = 1-0 S(1) narrow band were also carried out, but no embedded source was detected. The overall bow shock of HH 434-436 points back toward an embedded multiple system, IRAS 04325+2402. Moreover, from Hubble Space Telescope Near Infrared Camera and Multi-Object Spectrometer 3 observations HH 434-436 are located on the expected outflow axis of the central source A/B of this multiple system. On the basis of these facts we propose that HH 434-436 may be driven by the central source A/B of IRAS 04325+2402; therefore, they are probably part of a giant HH flow, which has a scale of 2.4 pc, although the possibility that HH 434-436 are three distinct flows cannot be completely ruled out.
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]	MOLECULAR OUTFLOWS ; STAR-FORMATION ; YOUNG STARS ; TAURUS ; POLARIMETRY ; EXCITATION ; COMPLEX ; DISKS ; CLOUD ; JET
收录类别	SCI
语种	英语
WOS记录号	WOS:000167582800027
公开日期	2013-01-31
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/8188]
专题	紫金山天文台_分子云与恒星形成研究团组
作者单位	1.Acad Sinica, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Acad Sci, Chinese Natl Astron Observ, Beijing 100012, Peoples R China 3.Chinese Acad Sci, Beijing Astron Observ, Beijing 100012, Peoples R China 4.Chinese Acad Sci, Beijing Astrophys Ctr, Beijing 100012, Peoples R China 5.Peking Univ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Wang, HC,Yang, J,Wang, M,et al. Herbig-Haro objects HH 434-436: Part of a giant flow driven by the central source A/B of IRAS 04325+2402?[J]. ASTRONOMICAL JOURNAL,2001,121(3):1551-1555.
APA	Wang, HC,Yang, J,Wang, M,Deng, LC,Yan, J,&Chen, JS.(2001).Herbig-Haro objects HH 434-436: Part of a giant flow driven by the central source A/B of IRAS 04325+2402?.ASTRONOMICAL JOURNAL,121(3),1551-1555.
MLA	Wang, HC,et al."Herbig-Haro objects HH 434-436: Part of a giant flow driven by the central source A/B of IRAS 04325+2402?".ASTRONOMICAL JOURNAL 121.3(2001):1551-1555.