Searching for evidence of jet-cloud interaction in radio galaxies : First results for 3C 381

We present results of Gemini spectroscopy and Hubble Space Telescope imaging of the 3C 381 radio galaxy. Possible ionizing mechanisms for the extended emission-line region were studied through state-of-the-art diagnostic analysis employing line ratios. Photoionization from the central engine as well...

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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 381
Galaxies: jets
Galaxies: structure
Intergalactic medium
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85259
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85259
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 381
Galaxies: jets
Galaxies: structure
Intergalactic medium
spellingShingle Ciencias Astronómicas
Galaxies: active
Galaxies: individual: 3C 381
Galaxies: jets
Galaxies: structure
Intergalactic medium
Reynaldi, María Victoria
Feinstein Baigorri, Carlos
Searching for evidence of jet-cloud interaction in radio galaxies : First results for 3C 381
topic_facet Ciencias Astronómicas
Galaxies: active
Galaxies: individual: 3C 381
Galaxies: jets
Galaxies: structure
Intergalactic medium
description We present results of Gemini spectroscopy and Hubble Space Telescope imaging of the 3C 381 radio galaxy. Possible ionizing mechanisms for the extended emission-line region were studied through state-of-the-art diagnostic analysis employing line ratios. Photoionization from the central engine as well as mixed medium photoionization models fail in reproducing both the strengths and the behaviour of the highest excitation lines, such as [Ne v]λ3424, He ii and [O iii]λ5007, which are measured at very large distances from the active galactic nucleus. Shock-ionization models provide a better fit to the observation. Expanding shocks with velocities higher than 500 km s-1 are capable of reaching the observed intensity ratios for lines with different ionization states and excitation degrees. This model also provides a direct explanation of the mechanical energy input needed to explain the high-velocity line-splitting observed in the velocity field.
format Articulo
Articulo
author Reynaldi, María Victoria
Feinstein Baigorri, Carlos
author_facet Reynaldi, María Victoria
Feinstein Baigorri, Carlos
author_sort Reynaldi, María Victoria
title Searching for evidence of jet-cloud interaction in radio galaxies : First results for 3C 381
title_short Searching for evidence of jet-cloud interaction in radio galaxies : First results for 3C 381
title_full Searching for evidence of jet-cloud interaction in radio galaxies : First results for 3C 381
title_fullStr Searching for evidence of jet-cloud interaction in radio galaxies : First results for 3C 381
title_full_unstemmed Searching for evidence of jet-cloud interaction in radio galaxies : First results for 3C 381
title_sort searching for evidence of jet-cloud interaction in radio galaxies : first results for 3c 381
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/85259
work_keys_str_mv AT reynaldimariavictoria searchingforevidenceofjetcloudinteractioninradiogalaxiesfirstresultsfor3c381
AT feinsteinbaigorricarlos searchingforevidenceofjetcloudinteractioninradiogalaxiesfirstresultsfor3c381
bdutipo_str Repositorios
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