The Color Selection of Quasars from Redshifts 5 to 10: Cloning and Discovery

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dc.creatorChiu, Kuenley
dc.creatorZheng, Wei
dc.creatorSchneider, Donald P.
dc.creatorGlazebrook, Karl
dc.creatorIye, Masanori
dc.creatorKashikawa, Nobunari
dc.creatorTsvetanov, Zlatan
dc.creatorYoshida, Michitoshi
dc.creatorBrinkmann, Jon
dc.date2005-03-31
dc.date.accessioned2026-07-07T11:29:40Z
dc.date.available2026-07-07T11:29:40Z
dc.descriptionWe present simulations of quasar colors, magnitudes, and numbers at redshifts 5<z<10 based on our discovery of ten new high-redshift quasars and the cloning of lower redshift Sloan Digital Sky Survey (SDSS) quasars. The ten quasars have redshifts ranging from z=4.7 to z=5.3 and i-magnitudes of 20.21 to 20.94. The natural diversity of spectral features in the cloned sample allows more realistic simulation of the quasar locus width than previously possible with synthetic template spectra. Colors are generated for the z>6 epoch taking advantage of the new UKIDSS near-infrared filter set, and we examine the redshift intervals of maximum productivity, discussing color selection and survey depth issues. On the basis of the SDSS sample, we find that the surface density of z>4.7 quasars increases by a factor of 3X by extending 0.7 i-magnitudes deeper than the SDSS spectroscopic survey limit of i=20.2 -- correspondingly we predict a total of ~400 faint quasars in the SDSS main area that have redshift z>4.7 and magnitudes $<20.9.
dc.description14 pages, 11 Postscript figures, uses emulateapj.sty The Astronomical Journal, accepted, in press
dc.identifierhttps://arxiv.org/abs/astro-ph/0504001
dc.identifierhttp://arxiv.org/abs/astro-ph/0504001
dc.identifierAstron.J.130:13-22,2005
dc.identifierdoi:10.1086/430525
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196784
dc.subjectAstrophysics
dc.titleThe Color Selection of Quasars from Redshifts 5 to 10: Cloning and Discovery
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