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The large scale distribution of warm ionized gas around nearby radio galaxies with jet-cloud interactions

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dc.contributor.author Tadhunter, Clive en_US
dc.contributor.author Villar-Martin, Montse en_US
dc.contributor.author Morganti, Raffaella en_US
dc.contributor.author Bland-Hawthorn, Joss en_US
dc.contributor.author Axon, David en_US
dc.date.accessioned 2006-05-31T14:06:53Z en_US
dc.date.available 2006-05-31T14:06:53Z en_US
dc.date.issued 2000-06 en_US
dc.identifier.citation Monthly Notices of the Royal Astronomical Society Volume 314 (2000) 849-857 en_US
dc.identifier.issn 1365-2966 en_US
dc.identifier.uri http://hdl.handle.net/1850/1898 en_US
dc.description RIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/
dc.description.abstract Deep, narrow-band Halpha observations taken with the TAURUS Tunable Filter (TTF) on the 4.2m WHT telescope are presented for two nearby radio galaxies with strong jet-cloud interactions. Although the brightest emission line components are closely aligned with the radio jets — providing nearby examples of the “alignment effect” most commonly observed in high redshift (z > 0.5) radio galaxies — lower surface brightness emission line structures are detected at large distances (10’s of kpc) from the radio jet axis. These latter structures cannot be reconciled with anisotropic illumination of the ISM by obscured quasar-like sources, since parts of the structures lie outside any plausible quasar ionization cones. Rather, the distribution of the emission lines around the fringes of the extended radio lobes suggests that the gas is ionized either by direct interaction with the radio components, or by the diffuse photoionizing radiation fields produced in the shocks generated in such interactions. These observations serve to emphasise that the ionizing effects of the radio components can extend far from the radio jet axes, and that deep emission line imaging observations are required to reveal the true distribution of warm gas in the host galaxies. We expect future deep imaging observations to reveal similar structures perpendicular to the radio axes in the high-z radio galaxies. (Refer to PDF file for exact formulas). en_US
dc.description.sponsorship The Willian Herschel Telescope is operated on the island of La Palma by the Isaac Newton Group in the Spanish Observatorio del Roches de los Muchachos of the Instituto de Astrofisica de Canarias. We thank Katherine Blundell for allowing us to use to her radio image of 3C171. MVM acknowledges support from PPARC. en_US
dc.format.extent 275814 bytes en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en_US en_US
dc.publisher Blackwell Publishing: Monthly Notices of the Royal Astronomical Society en_US
dc.relation.ispartofseries vol. 314 en_US
dc.relation.ispartofseries issue 4 en_US
dc.relation.ispartofseries pps. 849-857 en_US
dc.subject Galaxies-jets en_US
dc.subject Galaxies-nuclei en_US
dc.subject Jet-cloud interactions en_US
dc.subject Quasars en_US
dc.title The large scale distribution of warm ionized gas around nearby radio galaxies with jet-cloud interactions en_US
dc.type Article en_US
dc.identifier.url http://dx.doi.org/10.1046/j.1365-8711.2000.03416.x

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