The ALHAMBRA survey: Discovery of a faint QSO at <i>z</i>=5.41 (<i>Research Note</i>)

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dc.contributor.authorMatute, I.
dc.contributor.authorMasegosa, J.
dc.contributor.authorMarquez, I.
dc.contributor.authorFernandez-Soto, A.
dc.contributor.authorHusillos, C.
dc.contributor.authordel Olmo, A.
dc.contributor.authorPerea, J.
dc.contributor.authorPovic, M.
dc.contributor.authorAscaso, B.
dc.contributor.authorAlfaro, E. J.
dc.contributor.authorMoles, M.
dc.contributor.authorAguerri, J. A. L.
dc.contributor.authorAparicio-Villegas, T.
dc.contributor.authorBenitez, N.
dc.contributor.authorBroadhurst, T.
dc.contributor.authorCabrera-Cano, J.
dc.contributor.authorCastander, F. J.
dc.contributor.authorCepa, J.
dc.contributor.authorCervino, M.
dc.contributor.authorCristobal-Hornillos, D.
dc.contributor.authorInfante, L.
dc.contributor.authorGonzalez Delgado, R. M.
dc.contributor.authorMartinez, V. J.
dc.contributor.authorMolino, A.
dc.contributor.authorPrada, F.
dc.contributor.authorQuintana, J. M.
dc.date.accessioned2025-01-24T00:08:04Z
dc.date.available2025-01-24T00:08:04Z
dc.date.issued2013
dc.description.abstractAims. We aim to illustrate the potentiality of the Advanced Large, Homogeneous Area, Medium-Band Redshift Astronomical (ALHAMBRA) survey to investigate the high-redshift universe through the detection of quasi stellar objects (QSOs) at redshifts higher than 5.
dc.description.abstractMethods. We searched for QSOs candidates at high redshift by fitting an extensive library of spectral energy distributions - including active and non-active galaxy templates, as well as stars - to the photometric database of the ALHAMBRA survey (composed of 20 optical medium-band plus the 3 broad-band JHK(s) near-infrared filters).
dc.description.abstractResults. Our selection over approximate to 1 square degree of ALHAMBRA data (similar to 1/4 of the total area covered by the survey), combined with GTC/OSIRIS spectroscopy, has yielded identification of an optically faint QSO at very high redshift (z = 5 : 41). The QSO has an absolute magnitude of similar to-24 at the 1450 angstrom continuum, a bolometric luminosity of approximate to 2 x 10(46) erg s(-1), and an estimated black hole mass of approximate to 10(8) M-circle dot. This QSO adds itself to a reduced number of known UV faint sources at these redshifts. The preliminary derived space density is compatible with the most recent determinations of the high-z QSO luminosity functions. This new detection shows how ALHAMBRA, as well as forthcoming well-designed photometric surveys, can provide a wealth of information on the origin and early evolution of this kind of object.
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361/201321920
dc.identifier.eissn1432-0746
dc.identifier.issn0004-6361
dc.identifier.urihttps://doi.org/10.1051/0004-6361/201321920
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101944
dc.identifier.wosidWOS:000325211900134
dc.language.isoen
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subjectgalaxies: active
dc.subjectquasars: general
dc.subjectgalaxies: distances and redshifts
dc.subjectgalaxies: high-redshift
dc.subjectgalaxies: evolution
dc.subjectquasars: emission lines
dc.titleThe ALHAMBRA survey: Discovery of a faint QSO at <i>z</i>=5.41 (<i>Research Note</i>)
dc.typeartículo
dc.volumen557
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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