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Colección SciELO Chile

Radio spectra and polarisation properties of a bright sample of radio-loud broad absorption line quasars

Indexado

WoS	WOS:000305803300131
Scopus	SCOPUS_ID:84868136680

DOI

10.1051/0004-6361/201219056

Año

2012

Tipo

artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras

Abstract

Results. The fractions of resolved sources in the BAL and non-BAL QSO samples are similar (16% versus (vs.) 12%). The resolved sources in the two samples have similar linear sizes (20 to 400 kpc) and morphologies. There is weak evidence that the fraction of variable sources amongst BAL QSOs is smaller. The fractions of candidate GHz-peaked sources are similar in the two samples (36 +/- 12% vs. 23 +/- 8%), suggesting that BAL QSOs are not generally younger than non-BAL QSOs. Both BAL and non-BAL QSOs have a wide range of spectral indices, including flat-spectrum and steep-spectrum sources, consistent with a broad range of orientations. There is weak evidence (91% confidence) that the spectral indices of the BAL QSOs are steeper than those of non-BAL QSOs, mildly favouring edge-on orientations. At a higher level of significance (>= 97%), the spectra of BAL QSOs are no flatter than those of non-BAL QSOs, which suggests that a polar orientation is not preferred. The distributions of fractional polarisation in the two samples have similar median values (1-3%). The distributions of rotation measure are also similar, the only outlier being the BAL QSO 1624+37, which has an extreme rest-frame rotation measure (from the literature) of - 18 350 +/- 570 rad m(-2).

Revista

Revista	ISSN
Astronomy & Astrophysics	0004-6361

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Disciplinas de Investigación

WOS
Astronomy & Astrophysics

Scopus
Sin Disciplinas

SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional

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Autores - Afiliación

Ord.	Autor	Género	Institución - País
1	Bruni, G.	Mujer	INAF Ist Radioastron - Italia UNIV BOLOGNA - Italia Univ Cantabria - España Istituto Di Radioastronomia, Bologna - Italia Alma Mater Studiorum Università di Bologna - Italia Universidad de Cantabria - España
2	Mack, K-H	-	INAF Ist Radioastron - Italia Istituto Di Radioastronomia, Bologna - Italia
3	Salerno, E.	-	INAF Ist Radioastron - Italia Istituto Di Radioastronomia, Bologna - Italia
4	MONTENEGRO-MONTES, FRANCISCO MIGUEL	Hombre	ESO - Chile European Southern Observatory Santiago - Chile Observatorio Europeo Austral - Chile
5	Carballo, R.	-	Univ Cantabria - España Universidad de Cantabria - España
6	Benn, Chris	Hombre	Grupo de Telescopios Isaac Newton, España - España Isaac Newton Group - España
7	GONZALEZ-SERRANO, JOSE IGNACIO	Hombre	Univ Cantabria - España Universidad de Cantabria - España
8	Holt, J.	-	Leiden Univ - Países Bajos Leiden Observatory Research Institute - Países Bajos Sterrewacht Leiden - Países Bajos
9	Jimenez-Lujan, F.	-	Univ Cantabria - España Grupo de Telescopios Isaac Newton, España - España Universidad de Cantabria - España Isaac Newton Group - España

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Origen de Citas Identificadas

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Citas identificadas: Las citas provienen de documentos incluidos en la base de datos de DATACIENCIA

Citas Identificadas: 20.69 %
Citas No-identificadas: 79.31 %

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Citas identificadas: Las citas provienen de documentos incluidos en la base de datos de DATACIENCIA

Citas Identificadas: 20.69 %
Citas No-identificadas: 79.31 %

Financiamiento

Fuente
European Union
Spanish Ministerio de Ciencia e Innovación
National Aeronautics and Space Administration
Seventh Framework Programme
Fondo Nacional de Ciencia TecnologÃa e InnovaciÃ³n
Sixth Framework Programme
Italian Programme for Research of Relevant National Interest

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Agradecimientos

Agradecimiento
We are grateful to F. Mantovani for helping us during the observations at the 100-m Effelsberg telescope. We would also like to thank A. Mignano, from the ALMA Regional Centre (Italian node), for helping us in image analysis with the first release of the CASA astronomical software. Part of this work was supported by a grant of the Italian Programme for Research of Relevant National Interest (PRIN No. 18/2007, PI: K.-H. Mack) The authors acknowledge financial support from the Spanish Ministerio de Ciencia e Innovacion under project AYA2008-06311-C02-02. This work has benefited from research funding from the European Union's sixth framework programme under RadioNet grant agreement No. 227290. This work has been partially based on observations with the 100-m telescope of the MPIfR (Max-Planck-Institut for Radioastronomie) at Effelsberg. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. This research has made use of the NASA/IPAC Infrared Science Archive and NASA/IPAC Extragalactic Database (NED) which are both operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Use has been made of the Sloan Digital Sky Survey (SDSS) Archive. The SDSS is managed by the Astrophysical Research Consortium (ARC) for the participating institutions: The University of Chicago, Fermilab, the Institute for Advanced Study, the Japan Participation Group, The John Hopkins University, Los Alamos National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the Max-Planck-Institute for Astrophysics (MPA), New Mexico State University, University of Pittsburgh, Princeton University, the United States Naval Observatory, and the University of Washington.
We are grateful to F. Mantovani for helping us during the observations at the 100-m Effelsberg telescope. We would also like to thank A. Mignano, from the ALMA Regional Centre (Italian node), for helping us in image analysis with the first release of the CASA astronomical software. Part of this work was supported by a grant of the Italian Programme for Research of Relevant National Interest (PRIN No. 18/2007, PI: K.-H. Mack) The authors acknowledge financial support from the Spanish Ministerio de Ciencia e Innovación under project AYA2008-06311-C02-02. This work has benefited from research funding from the European Union’s sixth framework programme under RadioNet grant agreement No. 227290. This work has been partially based on observations with the 100-m telescope of the MPIfR (Max-Planck-Institut für Radioastronomie) at Effelsberg. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. This research has made use of the NASA/IPAC Infrared Science Archive and NASA/IPAC Extragalactic Database (NED) which are both operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Use has been made of the Sloan Digital Sky Survey (SDSS)

Agradecimiento

We are grateful to F. Mantovani for helping us during the observations at the 100-m Effelsberg telescope. We would also like to thank A. Mignano, from the ALMA Regional Centre (Italian node), for helping us in image analysis with the first release of the CASA astronomical software. Part of this work was supported by a grant of the Italian Programme for Research of Relevant National Interest (PRIN No. 18/2007, PI: K.-H. Mack) The authors acknowledge financial support from the Spanish Ministerio de Ciencia e Innovacion under project AYA2008-06311-C02-02. This work has benefited from research funding from the European Union's sixth framework programme under RadioNet grant agreement No. 227290. This work has been partially based on observations with the 100-m telescope of the MPIfR (Max-Planck-Institut for Radioastronomie) at Effelsberg. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. This research has made use of the NASA/IPAC Infrared Science Archive and NASA/IPAC Extragalactic Database (NED) which are both operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Use has been made of the Sloan Digital Sky Survey (SDSS) Archive. The SDSS is managed by the Astrophysical Research Consortium (ARC) for the participating institutions: The University of Chicago, Fermilab, the Institute for Advanced Study, the Japan Participation Group, The John Hopkins University, Los Alamos National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the Max-Planck-Institute for Astrophysics (MPA), New Mexico State University, University of Pittsburgh, Princeton University, the United States Naval Observatory, and the University of Washington.

We are grateful to F. Mantovani for helping us during the observations at the 100-m Effelsberg telescope. We would also like to thank A. Mignano, from the ALMA Regional Centre (Italian node), for helping us in image analysis with the first release of the CASA astronomical software. Part of this work was supported by a grant of the Italian Programme for Research of Relevant National Interest (PRIN No. 18/2007, PI: K.-H. Mack) The authors acknowledge financial support from the Spanish Ministerio de Ciencia e Innovación under project AYA2008-06311-C02-02. This work has benefited from research funding from the European Union’s sixth framework programme under RadioNet grant agreement No. 227290. This work has been partially based on observations with the 100-m telescope of the MPIfR (Max-Planck-Institut für Radioastronomie) at Effelsberg. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. This research has made use of the NASA/IPAC Infrared Science Archive and NASA/IPAC Extragalactic Database (NED) which are both operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Use has been made of the Sloan Digital Sky Survey (SDSS)

Muestra la fuente de financiamiento declarada en la publicación.

Abstract

Revista

Métricas Externas

Disciplinas de Investigación

Colaboración Institucional

Autores - Afiliación

Origen de Citas Identificadas

Financiamiento

Agradecimientos

Departamento Gestión de Conocimiento, Monitoreo y Prospección