Hubble Space Telescope observations of extended [OIII]λ5007 emission in nearby QSO2s : new constraints on AGN host galaxy interaction

We present a Hubble Space Telescope survey of extended [O III] λ5007 emission for a sample of 12 nearby (z < 0.12), luminous Type 2 quasars (QSO2s), which we use to measure the extent and kinematics of their AGNionized gas. We find that the size of the observed [O III] regions scale with luminosi...

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Detalles Bibliográficos
Autores: Fischer, Travis C., Kraemer, S. B., Schmitt, Henrique Roberto, Micchi, L. F. Longo, Crenshaw, Daniel Michael, Revalski, Mitchell, Vestergaard, Marianne, Elvis, Martin, Gaskell, C.M., Hamann, Fred, Ho, Luis C., Hutchings, John B., Mushotzky, Richard, Netzer, Hagai, Storchi-Bergmann, Thaisa, Straughn, Amber N., Turner, T.J., Ward, Martin John
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:Brasil
Institución:Universidade Federal do Rio Grande do Sul (UFRGS)
Repositorio:Repositório Institucional da UFRGS
Idioma:inglés
OAI Identifier:oai:www.lume.ufrgs.br:10183/182128
Acceso en línea:http://hdl.handle.net/10183/182128
Access Level:acceso abierto
Palabra clave:Galáxias ativas
Cinemática
Quasars
Nucleo galatico
Galaxies
Active
Kinematics and dynamics
Emission lines
Descripción
Sumario:We present a Hubble Space Telescope survey of extended [O III] λ5007 emission for a sample of 12 nearby (z < 0.12), luminous Type 2 quasars (QSO2s), which we use to measure the extent and kinematics of their AGNionized gas. We find that the size of the observed [O III] regions scale with luminosity in comparison to nearby, less luminous Seyfert galaxies and radially outflowing kinematics to exist in all targets. We report an average maximum outflow radius of ∼600 pc, with gas continuing to be kinematically influenced by the central active galactic nucleus (AGN) out to an average radius of ∼1130 pc. These findings question the effectiveness of AGNs being capable of clearing material from their host bulge in the nearby universe and suggest that disruption of gas by AGN activity may prevent star formation without requiring evacuation. Additionally, we find a dichotomy in our targets when comparing [O III] radial extent and nuclear FWHM, where QSO2s with compact [O III] morphologies typically possess broader nuclear emission lines.

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