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Multicolor detection of high-redshift quasars, II. Five objects with z ≳ 4"

Smith, J. D. and Djorgovski, S. and Thompson, D. and Brisken, W. F. and Neugebauer, G. and Matthews, K. and Meylan, G. and Piotto, G. and Suntzeff, N. B. (1994) Multicolor detection of high-redshift quasars, II. Five objects with z ≳ 4". Astronomical Journal, 110 (1). pp. 1147-1155. ISSN 0004-6256.

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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. Amoderate resolution absorption line spectrum for the object shows a very dense Lya forest and two CIV 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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Smith, J. D.0000-0003-1545-5078
Djorgovski, S.0000-0002-0603-3087
Additional Information:© 1995 American Astronomical Society. Received 1995 April 5. We would like to thank numerous colleagues for their enthusiastic reception of the first paper in this series as well as for their encouragement in publishing this paper. We also wish to thank the staffs of Palomar Observatory, Cerro Tololo Inter-American Observatory, and the European Southern Observatory for all of their help. J.D.S. acknowledges support from an NPSC Fellowship. This work was supported in part by an NSF PYI Award AST-9157412 and a Dudley Observatory Award to S.D. Infrared Astrophysics at Caltech is supported by a grant from the NSF.
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Official Citation:Multicolor detection of high-redshift quasars, 2: Five objects with Z greater than or approximately equal to 4 [ Erratum: 1995AJ....110..439S] Smith, J. D.; Djorgovski, S.; Thompson, D.; Brisken, W. F.; Neugebauer, G.; Matthews, K.; Meylan, G.; Piotto, G.; Suntzeff, N. B. The Astronomical Journal, vol. 108, no. 4, p. 1147-1155
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ID Code:74253
Deposited By: Ruth Sustaita
Deposited On:14 Feb 2017 20:19
Last Modified:03 Oct 2019 16:36

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