Five high-redshift quasars discovered in commissioning imaging data of the Sloan Digital Sky Survey

We report the discovery of five quasars with redshifts of 4.67-5.27 and z'-band magnitudes of 19.5-20.7 (M-B similar to -27). All were originally selected as distant quasar candidates in optical/near-infrared photometry from the Sloan Digital Sky Survey (SDSS), and most were confirmed as probab...

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Szerző:	Zheng, W
Közreműködő(k):	Tsvetanov, Z I Schneider, D P Fan, X H Becker, R H Davis, M White, R L Strauss, M A Anderson, J E Annis, J Bahcall, N A Connolly, A J Csabai, I Davidsen, A F Fukugita, M Gunn, J E Heckman, T M Hennessy, G S Ivezic, Z Knapp, G R Lupton, R H Peng, E Szalay, A S Thakar, A R Yanny, B York, D G
Formátum:	folyóiratcikk
Megjelenés:	2000
Online elérés:	http://hdl.handle.net/10831/49172
Címkék:	Új címke A tételhez itt fűzhet saját címkét!

id	edit-10831-49172
recordtype	dspace
spelling	edit-10831-491722020-08-08T19:55:00Z Five high-redshift quasars discovered in commissioning imaging data of the Sloan Digital Sky Survey Zheng, W Tsvetanov, Z I Schneider, D P Fan, X H Becker, R H Davis, M White, R L Strauss, M A Anderson, J E Annis, J Bahcall, N A Connolly, A J Csabai, I Davidsen, A F Fukugita, M Gunn, J E Heckman, T M Hennessy, G S Ivezic, Z Knapp, G R Lupton, R H Peng, E Szalay, A S Thakar, A R Yanny, B York, D G We report the discovery of five quasars with redshifts of 4.67-5.27 and z'-band magnitudes of 19.5-20.7 (M-B similar to -27). All were originally selected as distant quasar candidates in optical/near-infrared photometry from the Sloan Digital Sky Survey (SDSS), and most were confirmed as probable high-redshift quasars by supplementing the SDSS data with J and K measurements. The quasars possess strong, broad Ly alpha emission lines, with the characteristic sharp cutoff on the blue side produced by Ly alpha forest absorption. Three quasars contain strong, broad absorption features, and one of them exhibits very strong N v emission. The amount of absorption produced by the Lya forest increases toward higher redshift, and that in the z = 5.27 object (D-A approximate to 0.7) is consistent with a smooth extrapolation of the absorption seen in lower redshift quasars. The high luminosity of these objects relative to most other known objects at z greater than or similar to 5 makes them potentially valuable as probes of early quasar properties and of the intervening intergalactic medium. 2000 info:eu-repo/semantics/article http://hdl.handle.net/10831/49172 doi:10.1086/301570 elte:000089884400001 elte:17644436189 elte:1064414 elte:4 elte:ASTRON J elte:ASTRONOMICAL JOURNAL elte:120 elte:10067248 info:eu-repo/semantics/openAccess application/pdf LOMS: https://edit.elte.hu/xmlui/bitstream/10831/49172/1/Five%20High-Redshift%20Quasars%20Discovered%20in%20Commissioning%20Imaging%20Data%20of%20the.pdf
institution	L_EDIT
description	We report the discovery of five quasars with redshifts of 4.67-5.27 and z'-band magnitudes of 19.5-20.7 (M-B similar to -27). All were originally selected as distant quasar candidates in optical/near-infrared photometry from the Sloan Digital Sky Survey (SDSS), and most were confirmed as probable high-redshift quasars by supplementing the SDSS data with J and K measurements. The quasars possess strong, broad Ly alpha emission lines, with the characteristic sharp cutoff on the blue side produced by Ly alpha forest absorption. Three quasars contain strong, broad absorption features, and one of them exhibits very strong N v emission. The amount of absorption produced by the Lya forest increases toward higher redshift, and that in the z = 5.27 object (D-A approximate to 0.7) is consistent with a smooth extrapolation of the absorption seen in lower redshift quasars. The high luminosity of these objects relative to most other known objects at z greater than or similar to 5 makes them potentially valuable as probes of early quasar properties and of the intervening intergalactic medium.
format	Journal Article
physical	application/pdf
author	Zheng, W
spellingShingle	Zheng, W Five high-redshift quasars discovered in commissioning imaging data of the Sloan Digital Sky Survey
author_facet	Zheng, W Tsvetanov, Z I Schneider, D P Fan, X H Becker, R H Davis, M White, R L Strauss, M A Anderson, J E Annis, J Bahcall, N A Connolly, A J Csabai, I Davidsen, A F Fukugita, M Gunn, J E Heckman, T M Hennessy, G S Ivezic, Z Knapp, G R Lupton, R H Peng, E Szalay, A S Thakar, A R Yanny, B York, D G
author2	Tsvetanov, Z I Schneider, D P Fan, X H Becker, R H Davis, M White, R L Strauss, M A Anderson, J E Annis, J Bahcall, N A Connolly, A J Csabai, I Davidsen, A F Fukugita, M Gunn, J E Heckman, T M Hennessy, G S Ivezic, Z Knapp, G R Lupton, R H Peng, E Szalay, A S Thakar, A R Yanny, B York, D G
title	Five high-redshift quasars discovered in commissioning imaging data of the Sloan Digital Sky Survey
title_short	Five high-redshift quasars discovered in commissioning imaging data of the Sloan Digital Sky Survey
title_full	Five high-redshift quasars discovered in commissioning imaging data of the Sloan Digital Sky Survey
title_fullStr	Five high-redshift quasars discovered in commissioning imaging data of the Sloan Digital Sky Survey
title_full_unstemmed	Five high-redshift quasars discovered in commissioning imaging data of the Sloan Digital Sky Survey
title_sort	five high-redshift quasars discovered in commissioning imaging data of the sloan digital sky survey
publishDate	2000
publishDateSort	2000
url	http://hdl.handle.net/10831/49172
first_indexed	2020-08-08T19:55:00Z
last_indexed	2023-09-01T10:45:50Z
_version_	1775824221167943680
score	13,368428

Five high-redshift quasars discovered in commissioning imaging data of the Sloan Digital Sky Survey

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