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Optical and UV Spectral Diagnostics for GPS and CSS Sources

Dopita, Michael

Description

In this paper I examine the use of optical and UV spectral diagnostic ratios to distinguish between gas which is locally shock-excited by the interaction with a jet and that which is photoionised by the central engine. In many cases key UV lines remain unobserved except in the case of high redshift radio galaxies. However, in one case, the nearby GPS galaxy NGC1052, UV data was obtained with the FOS. This object shows LINER characteristics at optical wavelengths, but has a rich coronal-line...[Show more]

dc.contributor.authorDopita, Michael
dc.coverage.spatialKerastari Greece
dc.date.accessioned2015-12-13T23:09:46Z
dc.date.available2015-12-13T23:09:46Z
dc.date.createdMay 29 2002
dc.identifier.urihttp://hdl.handle.net/1885/87153
dc.description.abstractIn this paper I examine the use of optical and UV spectral diagnostic ratios to distinguish between gas which is locally shock-excited by the interaction with a jet and that which is photoionised by the central engine. In many cases key UV lines remain unobserved except in the case of high redshift radio galaxies. However, in one case, the nearby GPS galaxy NGC1052, UV data was obtained with the FOS. This object shows LINER characteristics at optical wavelengths, but has a rich coronal-line spectrum in the UV. We conclude that jet-driven shocks tend to evolve from shock-excited to photoionised later in their evolution.
dc.publisherCSIRO Publishing
dc.relation.ispartofseriesWorkshop on Compact Steep Spectrum and GHz-Peaked Spectrum Radio Sources 2002
dc.sourceThe Third Workshop on Compact Steep Spectrum and GHz-Peaked Spectrum Radio Sources
dc.subjectKeywords: Galaxies: radio sources; ISM: shocks,photoionisation
dc.titleOptical and UV Spectral Diagnostics for GPS and CSS Sources
dc.typeConference paper
local.description.notesImported from ARIES
local.description.refereedYes
dc.date.issued2003
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationMigratedxPub16315
local.type.statusPublished Version
local.contributor.affiliationDopita, Michael, College of Physical and Mathematical Sciences, ANU
local.bibliographicCitation.startpage31
local.bibliographicCitation.lastpage34
local.identifier.doi10.1071/AS02026
dc.date.updated2015-12-12T08:20:42Z
local.identifier.scopusID2-s2.0-32444437047
CollectionsANU Research Publications

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