Giant Lya nebulae associated with high redshift radio galaxies

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dc.creatorReuland, Michiel
dc.creatorvan Breugel, Wil
dc.creatorRoettgering, Huub
dc.creatorde Vries, Wim
dc.creatorStanford, S. A.
dc.creatorDey, Arjun
dc.creatorLacy, Mark
dc.creatorBland-Hawthorn, Joss
dc.creatorDopita, Michael
dc.creatorMiley, George
dc.date2003-03-28
dc.date.accessioned2026-07-07T10:26:55Z
dc.date.available2026-07-07T10:26:55Z
dc.descriptionWe report deep Keck narrow-band Lya images of the luminous z > 3 radio galaxies 4C 41.17, 4C 60.07, and B2 0902+34. The images show giant, 100-200 kpc scale emission line nebulae, centered on these galaxies, which exhibit a wealth of morphological structure, including extended low surface brightness emission in the outer regions, radially directed filaments, cone-shaped structures and (indirect) evidence for extended Lya absorption. We discuss these features within a general scenario where the nebular gas cools gravitationally in large Cold Dark Matter (CDM) halos, forming stars and multiple stellar systems. Merging of these ``building'' blocks triggers large scale starbursts, forming the stellar bulges of massive radio galaxy hosts, and feeds super-massive black holes which produce the powerful radio jets and lobes. The radio sources, starburst superwinds and AGN radiation then disrupt the accretion process limiting galaxy and black hole growth, and imprint the observed filamentary and cone-shaped structures of the Lya nebulae.
dc.description36 Pages, including 8 Postscript figures. Accepted for publication in the Astrophysical Journal
dc.identifierhttps://arxiv.org/abs/astro-ph/0303637
dc.identifierhttp://arxiv.org/abs/astro-ph/0303637
dc.identifierAstrophys.J.592:755-766,2003
dc.identifierdoi:10.1086/375619
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177007
dc.subjectAstrophysics
dc.titleGiant Lya nebulae associated with high redshift radio galaxies
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