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Model Atmosphere Analysis of the Weakly Magnetic DZ White Dwarf G165-7
P. Dufour, P. Bergeron, G. D. Schmidt +5
A reanalysis of the strongly metal-blanketed DZ white dwarf G165-7 is presented. An improved grid of model atmospheres and synthetic spectra is used to analyze BVRI, JHK, and ugriz…
A Catalog of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4
Daniel J. Eisenstein, James Liebert, Hugh C. Harris +13
We present a catalog of 9316 spectroscopically confirmed white dwarfs from the Sloan Digital Sky Survey Data Release 4. We have selected the stars through photometric cuts and spec…
The 2dF-SDSS LRG and QSO Survey: The z<2.1 Quasar Luminosity Function from 5645 Quasars to g=21.85
G. T. Richards, S. M. Croom, S. F. Anderson +25
We have used the 2dF instrument on the AAT to obtain redshifts of a sample of z<3, 18.0<g<21.85 quasars selected from SDSS imaging. These data are part of a larger joint programme:…
Discovery of New Ultracool White Dwarfs in the Sloan Digital Sky Survey
Evalyn Gates, Geza Gyuk, Hugh C. Harris +14
We report the discovery of five very cool white dwarfs in the Sloan Digital Sky Survey (SDSS). Four are ultracool, exhibiting strong collision induced absorption (CIA) from molecul…
Physical Evidence for Dark Energy
R. Scranton, A. J. Connolly, R. C. Nichol +17
We present measurements of the angular cross-correlation between luminous red galaxies from the Sloan Digital Sky Survey and the cosmic microwave background temperature maps from t…
A Survey of z>5.7 Quasars in the Sloan Digital Sky Survey II: Discovery of Three Additional Quasars at z>6
Xiaohui Fan, Michael A. Strauss, Donald P. Schneider +14
We present the discovery of three new quasars at z>6 in 1300 deg^2 of SDSS imaging data, J114816.64+525150.3 (z=6.43), J104845.05+463718.3 (z=6.23) and J163033.90+401209.6 (z=6.05)…