A radio galaxy at z=3.6 in a giant rotating Lyman $α$ halo

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dc.creatorvan Ojik, R.
dc.creatorRöttgering, H. J. A.
dc.creatorCarilli, C. L.
dc.creatorMiley, G. K.
dc.creatorBremer, M. N.
dc.creatorMacchetto
dc.date1996-08-15
dc.date1996-08-16
dc.date.accessioned2026-07-07T09:02:00Z
dc.date.available2026-07-07T09:02:00Z
dc.descriptionWe present the discovery and detailed observations of the radio galaxy 1243+036 (=4C 03.24) at a redshift of $z=3.57$. The most spectacular feature of 1243+036 is the presence of a Ly$α$ halo of luminosity $\sim10^{44.5}$ ergs s$^{-1}$ which extends over$\sim20''$ (135 kpc). The narrow band imaging and the high resolution spectroscopy show that the Ly$α$ gas has three distinct components: (i) gas with a high velocity dispersion (1550 km s$^{-1}$ FWHM) located inside the radio structure, (ii) enhanced Ly$α$ emission blue shifted by 1100 km s$^{-1}$ at the location of the strong bend in the radio jet and (iii) Ly$α$ emission extending out well beyond the radio lobes. This emission has a low velocity dispersion (250 km s$^{-1}$ FWHM) and a velocity gradient of 450 km s$^{-1}$ over the extent of the emission, indicative of large scale rotation. On the basis of these obserserations various mechanisms for the origin and kinematics of the Ly$α$ halo are discussed.
dc.descriptionaccepted for publication in Astronomy and Astrophysics
dc.identifierhttps://arxiv.org/abs/astro-ph/9608099
dc.identifierhttp://arxiv.org/abs/astro-ph/9608099
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/148478
dc.subjectAstrophysics
dc.titleA radio galaxy at z=3.6 in a giant rotating Lyman $α$ halo
dc.typetext

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