activity
19952026
most citedThe Seventh Data Release of the Sloan Digital Sky Survey

5.4k citations · 26k across the 52 of their papers we have counts for

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Showing 2001Show all

5 papers · 1 filter

astro-ph2001★ 2 cited

The Optical, Infrared and Radio Properties of Extragalactic Sources Observed by SDSS, 2MASS and FIRST Surveys

Z. Ivezic, R. H. Becker, M. Blanton +19

We positionally match sources observed by the Sloan Digital Sky Survey (SDSS), the Two Micron All Sky Survey (2MASS), and the Faint Images of the Radio Sky at Twenty-cm (FIRST) sur…

astro-ph2001★ 479 cited

Towards Spectral Classification of L and T Dwarfs: Infrared and Optical Spectroscopy and Analysis

T. R. Geballe, G. R. Knapp, S. K. Leggett +2

We present 0.6-2.5um, R~400 spectra of twenty-seven cool, low luminosity stars and substellar objects. Based on these and previously published spectra we develop a preliminary spec…

astro-ph2001★ 51 cited

Exploratory Chandra Observations of the Highest-Redshift Quasars: X-rays from the Dawn of the Modern Universe

C. Vignali, W. N. Brandt, X. Fan +4

We report exploratory Chandra observations of 14 high-redshift (z=4.06-5.27), optically selected quasars. Ten of these quasars are detected, increasing the number of z>4 X-ray dete…

astro-ph2001★ 164 cited

The ROSAT Deep Survey: VI. X-ray sources and Optical identifications of the Ultra Deep Survey

I. Lehmann, G. Hasinger, M. Schmidt +10

We describe in this paper the ROSAT Ultra Deep Survey (UDS), an extension of the ROSAT Deep Survey (RDS) in the Lockman Hole. The UDS reaches a flux level of 1.2 x 10E-15 erg/cm2/s…

astro-ph2001★ 103 cited

High-Redshift Quasars Found in Sloan Digital Sky Survey Commissioning Data VI. Sloan Digital Sky Survey Spectrograph Observations

Scott F. Anderson, Xiaohui Fan, Gordon T. Richards +4

We present results on over 100 high-redshift quasars found in the Sloan Digital Sky Survey (SDSS), using automated selection algorithms applied to SDSS imaging data and with spectr…