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Optical Counterparts for 70,000 Radio Sources: APM Identifications for the FIRST Radio Survey
Richard G. McMahon, Richard L. White, David J. Helfand +1
We describe a program to identify optical counterparts to radio sources from the VLA FIRST survey using the Cambridge APM scans of the POSS-I plates. We use radio observations cove…
Evidence for Reionization at z ~ 6: Detection of a Gunn-Peterson Trough in a z=6.28 Quasar
Robert H. Becker, Xiaohui Fan, Richard L. White +27
We present moderate resolution Keck spectroscopy of quasars at z=5.82, 5.99 and 6.28, discovered by the Sloan Digital Sky Survey (SDSS). We find that the Ly Alpha absorption in the…
A Survey of z>5.8 Quasars in the Sloan Digital Sky Survey I: Discovery of Three New Quasars and the Spatial Density of Luminous Quasars at z~6
Xiaohui Fan, Vijay K. Narayanan, Robert H. Lupton +10
We present the results from a survey of i-dropout objects selected from ~1550 deg^2 of multicolor imaging data from the Sloan Digital Sky Survey, to search for luminous quasars at…
The FIRST Bright Quasar Survey III. The South Galactic Cap
Robert H. Becker, Richard L. White, Michael D. Gregg +9
We present the results of an extension of the FIRST Bright Quasar Survey (FBQS) to the South Galactic cap, and to a fainter optical magnitude limit. Radio source counterparts with…
The First Observations of the Second Brightest Quasar
K. M. Leighly, J. P. Halpern, D. J. Helfand +2
We report the discovery of a new bright quasar PHL 1811 as part of a followup program to identify bright quasars in the FIRST radio survey. With B=13.9, R=13.9, and z=0.192, this q…