X-ray constraints on the fraction of obscured active galactic nuclei at high accretion luminosities
dc.contributor.author | Georgakakis, A. | |
dc.contributor.author | Salvato, M. | |
dc.contributor.author | Liu, Z. | |
dc.contributor.author | Buchner, J. | |
dc.contributor.author | Brandt, W. N. | |
dc.contributor.author | Ananna, T. Tasnim | |
dc.contributor.author | Schulze, A. | |
dc.contributor.author | Shen, Yue | |
dc.contributor.author | LaMassa, S. | |
dc.contributor.author | Nandra, K. | |
dc.contributor.author | Merloni, A. | |
dc.contributor.author | McGreer, I. D. | |
dc.date.accessioned | 2024-01-10T13:44:15Z | |
dc.date.available | 2024-01-10T13:44:15Z | |
dc.date.issued | 2017 | |
dc.description.abstract | The wide-area XMM-XXL X-ray survey is used to explore the fraction of obscured active galactic nuclei (AGNs) at high accretion luminosities, L-X(2-10 keV) greater than or similar to 10(44) erg s(-1), and out to redshift z approximate to 1.5. The sample covers an area of about 14 deg(2) and provides constraints on the space density of powerful AGNs over a wide range of neutral hydrogen column densities extending beyond the Compton-thick limit, N-H approximate to 10(24) cm(-2). The fraction of obscured Compton-thin (N-H = 10(22) - 10(24) cm(-2)) AGNs is estimated to be approximate to 0.35 for luminosities L-X(2-10 keV) > 10(44) erg s(-1), independent of redshift. For less luminous sources, the fraction of obscured Compton-thin AGNs increases from 0.45 +/- 0.10 at z = 0.25 to 0.75 +/- 0.05 at z = 1.25. Studies that select AGNs in the infrared via template fits to the observed spectral energy distribution of extragalactic sources estimate space densities at high accretion luminosities consistent with the XMM-XXL constraints. There is no evidence for a large population of AGNs (e.g. heavily obscured) identified in the infrared and missed at X-ray wavelengths. We further explore the mid-infrared colours of XMM-XXL AGNs as a function of accretion luminosity, column density and redshift. The fraction of XMM-XXL sources that lie within the mid-infrared colour wedges defined in the literature to select AGNs is primarily a function of redshift. This fraction increases from about 20-30 per cent at z = 0.25 to about 50-70 per cent at z = 1.5. | |
dc.description.funder | THALES - European Union | |
dc.description.funder | Greek Government of the programme 'Education and lifelong learning' | |
dc.description.funder | FONDECYT Postdoctorados | |
dc.description.funder | Ministry of Economy, Development, and Tourism's Millennium Science Initiative | |
dc.description.funder | Millennium Institute of Astro-physics MAS | |
dc.description.funder | Alfred P. Sloan Foundation | |
dc.description.funder | National Science Foundation | |
dc.description.funder | U.S. Department of Energy Office of Science | |
dc.description.funder | University of Arizona | |
dc.description.funder | Brazilian Participation Group | |
dc.description.funder | Brookhaven National Laboratory | |
dc.description.funder | Carnegie Mellon University | |
dc.description.funder | University of Florida | |
dc.description.funder | French Participation Group | |
dc.description.funder | German Participation Group | |
dc.description.funder | Harvard University | |
dc.description.funder | Instituto de Astrofisica de Canarias | |
dc.description.funder | Michigan State/Notre Dame/JINA Participation Group | |
dc.description.funder | Johns Hopkins University | |
dc.description.funder | Lawrence Berkeley National Laboratory | |
dc.description.funder | Max Planck Institute for Astrophysics | |
dc.description.funder | Max Planck Institute for Extraterrestrial Physics | |
dc.description.funder | New Mexico State University | |
dc.description.funder | New York University | |
dc.description.funder | Ohio State University | |
dc.description.funder | Pennsylvania State University | |
dc.description.funder | University of Portsmouth | |
dc.description.funder | Princeton University | |
dc.description.funder | Spanish Participation Group | |
dc.description.funder | University of Tokyo | |
dc.description.funder | University of Utah | |
dc.description.funder | Vanderbilt University | |
dc.description.funder | University of Virginia | |
dc.description.funder | University of Washington | |
dc.description.funder | Yale University | |
dc.description.funder | Direct For Mathematical & Physical Scien | |
dc.fechaingreso.objetodigital | 2024-04-29 | |
dc.format.extent | 20 páginas | |
dc.fuente.origen | WOS | |
dc.identifier.doi | 10.1093/mnras/stx953 | |
dc.identifier.eissn | 1365-2966 | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.uri | https://doi.org/10.1093/mnras/stx953 | |
dc.identifier.uri | https://repositorio.uc.cl/handle/11534/78875 | |
dc.identifier.wosid | WOS:000406836200050 | |
dc.information.autoruc | Física;Buchner J ;S/I;1018064 | |
dc.issue.numero | 3 | |
dc.language.iso | en | |
dc.nota.acceso | contenido parcial | |
dc.pagina.final | 3251 | |
dc.pagina.inicio | 3232 | |
dc.publisher | OXFORD UNIV PRESS | |
dc.revista | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | |
dc.rights | acceso restringido | |
dc.subject | galaxies: active | |
dc.subject | quasars: general | |
dc.subject | quasars: supermassive black holes | |
dc.subject | galaxies: Seyfert | |
dc.subject | X-rays: diffuse background | |
dc.subject | ABSORPTION-LINE QUASARS | |
dc.subject | SUPERMASSIVE BLACK-HOLES | |
dc.subject | NUSTAR EXTRAGALACTIC SURVEY | |
dc.subject | STAR-FORMING GALAXIES | |
dc.subject | PHOTON IMAGING CAMERA | |
dc.subject | COMPTON-THICK AGN | |
dc.subject | XMM-NEWTON | |
dc.subject | PHOTOMETRIC REDSHIFTS | |
dc.subject | SPECTROSCOPIC SURVEY | |
dc.subject | LEGACY SURVEY | |
dc.title | X-ray constraints on the fraction of obscured active galactic nuclei at high accretion luminosities | |
dc.type | artículo | |
dc.volumen | 469 | |
sipa.codpersvinculados | 1018064 | |
sipa.index | WOS | |
sipa.index | Scopus | |
sipa.trazabilidad | Carga SIPA;09-01-2024 |
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