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Emission line studies of young radio sources

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arxiv astro-ph/0301642 v1 pith:L5KN6R4H submitted 2003-01-31 astro-ph

classification astro-ph
keywords radiocircumnuclearmodelsourcesourcesyoungcocooncompact
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We demonstrate the efficiency of high quality optical spectroscopic observations of two compact radio sources, PKS 1549-79 and PKS 1345+12, as a probe of the kinematics and physical conditions in the circumnuclear gas in the early stages of radio source evolution. We outline a schematic model for PKS 1345+12 based on the model for PKS 1549-79 proposed by Tadhunter et al. (2001) in which the young radio source is expanding through a dense and dusty enshrouding cocoon, sweeping material out of the circumnuclear regions.

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