Shock ionization in the extended emission-line region of 3C 305: the last piece of the (optical) puzzle

We present new Gemini spectroscopical data of the extended emission-line region of the 3C 305 radio galaxy in order to achieve a final answer to the long-standing question about the ionizing mechanism. The spectra show strong kinematic disturbances within the most intense line-emitting region. The r...

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Detalles Bibliográficos
Autores principales: Reynaldi, María Victoria, Feinstein Baigorri, Carlos
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Ciencias Astronómicas
Galaxies: Active
Galaxies: Individual: 3C 305
Galaxies: ISM
Galaxies: Jets
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85512
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85512
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Galaxies: Active
Galaxies: Individual: 3C 305
Galaxies: ISM
Galaxies: Jets
spellingShingle Ciencias Astronómicas
Galaxies: Active
Galaxies: Individual: 3C 305
Galaxies: ISM
Galaxies: Jets
Reynaldi, María Victoria
Feinstein Baigorri, Carlos
Shock ionization in the extended emission-line region of 3C 305: the last piece of the (optical) puzzle
topic_facet Ciencias Astronómicas
Galaxies: Active
Galaxies: Individual: 3C 305
Galaxies: ISM
Galaxies: Jets
description We present new Gemini spectroscopical data of the extended emission-line region of the 3C 305 radio galaxy in order to achieve a final answer to the long-standing question about the ionizing mechanism. The spectra show strong kinematic disturbances within the most intense line-emitting region. The relative intensities of the emission lines agree with the hypothesis that the gas is shocked during the interaction of powerful radio jets with the ambient medium. The emission from the recombination region acts as a very effective cooling mechanism, which is supported by the presence of a neutral outflow. However, the observed intensity is almost an order of magnitude lower than expected in a pure shock model. So, autoionizing shock models, in low-density and low-abundance regimes, are required in order to account for the observed emission within the region. This scenario also supports the hypothesis that the optical emitting gas and the X-ray plasma are in pressure balance.
format Articulo
Articulo
author Reynaldi, María Victoria
Feinstein Baigorri, Carlos
author_facet Reynaldi, María Victoria
Feinstein Baigorri, Carlos
author_sort Reynaldi, María Victoria
title Shock ionization in the extended emission-line region of 3C 305: the last piece of the (optical) puzzle
title_short Shock ionization in the extended emission-line region of 3C 305: the last piece of the (optical) puzzle
title_full Shock ionization in the extended emission-line region of 3C 305: the last piece of the (optical) puzzle
title_fullStr Shock ionization in the extended emission-line region of 3C 305: the last piece of the (optical) puzzle
title_full_unstemmed Shock ionization in the extended emission-line region of 3C 305: the last piece of the (optical) puzzle
title_sort shock ionization in the extended emission-line region of 3c 305: the last piece of the (optical) puzzle
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/85512
work_keys_str_mv AT reynaldimariavictoria shockionizationintheextendedemissionlineregionof3c305thelastpieceoftheopticalpuzzle
AT feinsteinbaigorricarlos shockionizationintheextendedemissionlineregionof3c305thelastpieceoftheopticalpuzzle
bdutipo_str Repositorios
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