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Título:
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AGN-host galaxy connection: morphology and colours of X-ray selected AGN at z ? 2
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Autores:
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Povi?, M. ;
Sánchez Portal, M. ;
Pérez García, A. M. ;
Bongiovanni, A. ;
Cepa, J. ;
Huertas Company, M. ;
Lara López, M. A. ;
Fernández Lorenzo, M. ;
Ederoclite, A. ;
Alfaro, E. ;
Castañeda, H. ;
Gallego Maestro, Jesús ;
González Serrano, J. I. ;
González, J. J.
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Tipo de documento:
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texto impreso
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Editorial:
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EDP Sciencies, 2012-05
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Astrofísica
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Materia = Ciencias: Física: Astronomía
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Tipo = Artículo
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Resumen:
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Context. The connection between active galactic nuclei (AGN) and their host galaxies has been widely studied and found to be of great importance for providing answers to some fundamental questions related to AGN fuelling mechanisms, and both their formation and evolution. Aims. Using X-ray data and one of the deepest broad-band optical data sets available, we study how morphology and colours are related to X-ray properties for sources at redshifts z ? 2.0, using a sample of 262 AGN in the Subaru/XMM-Newton Deep Survey (SXDS). Methods. We performed our morphological classification using the galSVM code, which is a new method that is particularly suited to dealing with high-redshift sources. Colour-magnitude diagrams were studied in relationship to redshift, morphology, X-ray obscuration, and X-ray-to-optical flux ratio. We analysed the different regions in the colour-magnitude diagrams, and searched for correlations with the observed properties of AGN populations using models of their formation and evolution. Results. We confirm that a robust and reliable morphological classification of a general galaxy population at high redshift should be based on a multi-parametric approach. At least 50% of X-ray detected AGN at z
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En línea:
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https://eprints.ucm.es/33628/1/jesusgallego18libre.pdf
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