Black-hole masses of type 1 AGN in the XMM-Newton bright serendipitous survey
[Aims]: We derive masses of the central supermassive black hole (SMBH) and accretion rates for 154 type 1 AGN belonging to a well-defined X-ray-selected sample, the XMM-Newton serendipitous sample (XBS). [Methods]: We used the most recent “single-epoch” relations, based on Hβ and MgIIλ2798 Å emissio...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/109290 |
| Acceso en línea: | http://hdl.handle.net/10261/109290 |
| Access Level: | acceso abierto |
| Palabra clave: | Galaxies: nuclei X-ray galaxies Surveys Galaxies: active |
| Sumario: | [Aims]: We derive masses of the central supermassive black hole (SMBH) and accretion rates for 154 type 1 AGN belonging to a well-defined X-ray-selected sample, the XMM-Newton serendipitous sample (XBS). [Methods]: We used the most recent “single-epoch” relations, based on Hβ and MgIIλ2798 Å emission lines, to derive the SMBH masses. We then used the bolometric luminosities, computed on the basis of an SED-fitting procedure, to calculate the accretion rates, both absolute and normalized to the Eddington luminosity (Eddington ratio). [Results]: The selected AGNs cover a range of masses from 107 to 1010 M⊙ with a peak around 8 × 108 M⊙ and a range of accretion rates from 0.01 to ~50 M⊙/year (assuming an efficiency of 0.1), with a peak at ~1 M⊙/year. The values of Eddington ratio range from 0.001 to ~0.5 and peak at 0.1. |
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