The emission line properties of the 3CR radio galaxies at redshift one: Shocks, evolution, and the alignment effect

P Best, H Rottgering, M Longair

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The results of a deep spectroscopic campaign on powerful radio galaxies with redshifts z similar to 1, to investigate in detail their emission line gas properties, are presented. Both the 2-dimensional velocity structure of the [OII] 3727 emission line and the ionisation state of the gas are found to be strongly dependent upon the linear size (age) of the radio source in a manner indicative of the emission line properties of small (young) radio sources being dominated by the passage of the radio source shocks. The consequences of this evolution throughout the few X 107 year lifetime of the radio source are discussed, particularly with relation to the alignment of the UV-optical continuum emission of these objects along their radio axis, the nature of which shows similar evolution.

Original languageEnglish
Title of host publicationACTIVE GALACTIC NUCLEI AND RELATED PHENOMENA
EditorsY Terzian, D Weedman, E Khachikian
Place of PublicationSAN FRANCISCO
PublisherASTRONOMICAL SOC PACIFIC
Pages241-245
Number of pages5
ISBN (Print)1-58381-008-0
Publication statusPublished - 1999
Event194th Symposium of the International-Astronomical-Union - BYURAKAN
Duration: 17 Aug 199822 Aug 1998

Conference

Conference194th Symposium of the International-Astronomical-Union
CityBYURAKAN
Period17/08/9822/08/98

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