TY - JOUR
T1 - Multicolor detection of high-redshift quasars. II. Five objects with z ≳ 4
AU - Smith, J. D.
AU - Djorgovski, S.
AU - Thompson, D.
AU - Brisken, W. F.
AU - Neugebauer, G.
AU - Matthews, K.
AU - Meylan, G.
AU - Piotto, G.
AU - Suntzeff, N. B.
PY - 1994/10
Y1 - 1994/10
N2 - We report the results of a multicolor wide-field CCD survey designed to rediscover several BRI quasars previously found in a photographic survey by Irwin et al. [ASPCS, 21, 117 (1991)], but not fully documented in the literature. Here we provide spectra, redshifts, finding charts, magnitudes, and coordinates for four such BRI quasars. Follow-up observations were obtained for BRI 2235-03, a borderline BAL object. A moderate resolution absorption line spectrum for the object shows a very dense Lyα forest and two C IV doublets at z>3. Its visible spectrum is redder than those of the other quasars presented, although it is similar in the infrared. J, H, and K magnitudes are presented for this quasar, showing it to be one of the most luminous objects known. New J, H, and K photometry is presented for PC 1247+3406, the most distant quasar known. In the course of the survey we also discovered a new quasar with z=4.042. Its spectrum, coordinates, magnitudes, and finding chart are presented here as well.
AB - We report the results of a multicolor wide-field CCD survey designed to rediscover several BRI quasars previously found in a photographic survey by Irwin et al. [ASPCS, 21, 117 (1991)], but not fully documented in the literature. Here we provide spectra, redshifts, finding charts, magnitudes, and coordinates for four such BRI quasars. Follow-up observations were obtained for BRI 2235-03, a borderline BAL object. A moderate resolution absorption line spectrum for the object shows a very dense Lyα forest and two C IV doublets at z>3. Its visible spectrum is redder than those of the other quasars presented, although it is similar in the infrared. J, H, and K magnitudes are presented for this quasar, showing it to be one of the most luminous objects known. New J, H, and K photometry is presented for PC 1247+3406, the most distant quasar known. In the course of the survey we also discovered a new quasar with z=4.042. Its spectrum, coordinates, magnitudes, and finding chart are presented here as well.
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U2 - 10.1086/117143
DO - 10.1086/117143
M3 - Article
AN - SCOPUS:0001730849
SN - 0004-6256
VL - 108
SP - 1147
EP - 1155
JO - Astronomical Journal
JF - Astronomical Journal
IS - 4
ER -