Giant Double Radio Source DA 240: Purveyor of Galaxies

doi:10.3847/1538-4357/aabad6

	Giant Double Radio Source DA 240: Purveyor of Galaxies
	Chen, Ru-Rong 1,2; Strom, Richard 1,3,4; Peng, Bo 1,2
刊名	ASTROPHYSICAL JOURNAL
	2018-05-10
卷号	858 期号:2 页码:6
关键词	galaxies: active galaxies: formation galaxies: individual (DA 240) galaxies: jets
ISSN号	0004-637X
DOI	10.3847/1538-4357/aabad6
通讯作者	Chen, Ru-Rong(chenrr@bao.ac.cn)
英文摘要	Galaxies of stars are building blocks of the baryonic universe. Their composition, structure, and kinematics have been well studied, but details of their origins remain sketchy. The collapse of gas clouds, induced by external forces whereby gravity overcomes internal pressure to form stars, is the likely starting point. Among the perturbing initiators of galaxy formation, radio source beams (jets) are quite effective. Typically, a beam may spawn one galaxy, though instances of several aligned with the radio axis are known. Recently, we found an impressive 14 companions in the lobes of the giant radio galaxy DA 240, which we argue formed as the result of jet instigation. This conclusion is bolstered by the fact that the galaxy groups display Z-shaped symmetry with respect to the radio axis. There is some evidence for star formation among the aligned companions. We also conclude that galaxy alignments at low redshift may derive from line-emitting gas observed in radio components of high-redshift galaxies.
WOS关键词	INDUCED STAR-FORMATION ; EMISSION ; REDSHIFT ; LINE ; ALIGNMENT ; OBJECT ; JET ; LUMINOSITY ; MORPHOLOGY ; LOBES
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000431818800011
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/22024]
专题	中国科学院紫金山天文台
通讯作者	Chen, Ru-Rong
作者单位	1.Chinese Acad Sci, CAS Key Lab FAST, NAOC, Beijing, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Beijing, Peoples R China 3.Dwingeloo Observ, Netherlands Inst Radio Astron ASTRON, Dwingeloo, Netherlands 4.Univ Amsterdam, Anton Pannekoek Inst Astron, Amsterdam, Netherlands
推荐引用方式 GB/T 7714	Chen, Ru-Rong,Strom, Richard,Peng, Bo. Giant Double Radio Source DA 240: Purveyor of Galaxies[J]. ASTROPHYSICAL JOURNAL,2018,858(2):6.
APA	Chen, Ru-Rong,Strom, Richard,&Peng, Bo.(2018).Giant Double Radio Source DA 240: Purveyor of Galaxies.ASTROPHYSICAL JOURNAL,858(2),6.
MLA	Chen, Ru-Rong,et al."Giant Double Radio Source DA 240: Purveyor of Galaxies".ASTROPHYSICAL JOURNAL 858.2(2018):6.