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The Ensemble Photometric Variability of ~25000 Quasars in the Sloan Digital Sky Survey
D. E. Vanden Berk, B. C. Wilhite, R. G. Kron +11
Using a sample of over 25000 spectroscopically confirmed quasars from the Sloan Digital Sky Survey, we show how quasar variability in the rest frame optical/UV regime depends upon…
The Sloan Digital Sky Survey Quasar Catalog II. First Data Release
Donald P. Schneider, Xiaohui Fan, Patrick B. Hall +13
We present the second edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog consists of 16713 objects in the SDSS First Data Release (DR1) that have luminositi…
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…
Discovery of a Clustered Quasar Pair at z ~ 5: Biased Peaks in Early Structure Formation
S. G. Djorgovski, D. Stern, A. Mahabal +1
We report a discovery of a quasar at z = 4.96 +- 0.03 within a few Mpc of the quasar SDSS 0338+0021 at z = 5.02 +- 0.02. The newly found quasar has the SDSS i and z magnitudes of ~…
Galaxy Types in the Sloan Digital Sky Survey Using Supervised Artificial Neural Networks
Nicholas M Ball, Jon Loveday, Masataka Fukugita +4
Supervised artificial neural networks are used to predict useful properties of galaxies in the Sloan Digital Sky Survey, in this instance morphological classifications, spectral ty…
The First Data Release of the Sloan Digital Sky Survey
The SDSS collaboration, Kevork Abazajian
The Sloan Digital Sky Survey has validated and made publicly available its First Data Release. This consists of 2099 square degrees of five-band (u, g, r, i, z) imaging data, 186,2…