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Giant Double Radio Source DA 240: Purveyor of Galaxies
Chen, Ru-Rong1,2; Strom, Richard1,3,4; Peng, Bo1,2
2018-05-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume858Issue:2Pages:6
Corresponding AuthorChen, Ru-Rong(chenrr@bao.ac.cn)
AbstractGalaxies 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.
Keywordgalaxies: active galaxies: formation galaxies: individual (DA 240) galaxies: jets
DOI10.3847/1538-4357/aabad6
WOS KeywordINDUCED STAR-FORMATION ; EMISSION ; REDSHIFT ; LINE ; ALIGNMENT ; OBJECT ; JET ; LUMINOSITY ; MORPHOLOGY ; LOBES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000431818800011
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22025
Collection中国科学院紫金山天文台
Corresponding AuthorChen, Ru-Rong
Affiliation1.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
Recommended Citation
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.
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