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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…
LOTIS, Super-LOTIS, SDSS and Tautenburg Observations of GRB 010921
H. S. Park, G. G. Williams, D. H. Hartmann +36
We present multi-instrument optical observations of the High Energy Transient Explorer (HETE-2)/Interplanetary Network (IPN) error box of GRB 010921. This event was the first gamma…
The Ghost of Sagittarius and Lumps in the Halo of the Milky Way
Heidi Jo Newberg, Brian Yanny, Constance M. Rockosi +16
We identify new structures in the halo of the Milky Way Galaxy from positions, colors and magnitudes of five million stars detected in the Sloan Digital Sky Survey. Most of these s…
Galaxy Number Counts from the Sloan Digital Sky Survey Commissioning Data
Naoki Yasuda, Masataka Fukugita, Vijay K. Narayanan +10
We present bright galaxy number counts in five broad bands () from imaging data taken during the commissioning phase of the Sloan Digital Sky Survey (SDSS). The…
Optical and Infrared Colors of Stars Observed by 2MASS and SDSS
K. Finlator, Z. Ivezic, M. Strauss +4
We discuss optical and infrared photometric properties of stars matched in the Two Micron All Sky Survey (2MASS) and the Sloan Digital Sky Survey (SDSS) commissioning data for 50 d…
The ROSAT Deep Survey: III. Optical spectral properties of X-ray sources in the Lockman Hole
I. Lehmann, G. Hasinger, M. Schmidt +6
The ROSAT Deep Survey in the Lockman Hole contains a complete sample of 50 X-ray sources with fluxes in the 0.5-2.0 keV band larger than 5.5E-15 erg/cm2/s. Previous work has provid…
The Sloan Digital Sky Survey Photometric Camera
J. Gunn, M. Carr, C. Rockosi +1
We have constructed a large format mosaic CCD camera for the Sloan Digital Sky Survey. The camera consists of two arrays, a photometric array which uses 30 2048 x 2048 SITe/Tektron…
The Number Density of Low Surface Brightness Galaxies with 23<mu_0<25 V-mag/sqr-arcsecond
J. J. Dalcanton, D. N. Spergel, J. E. Gunn +2
We present results of a large area CCD survey for low surface brightness galaxies (LSBs) that reaches central surface brightnesses of mu_0=25 mag/sqr-" in V. We have analyzed 17.5…
The HST Quasar Absorption Line Key Project XII. The Unusual Absorption Line System in the Spectrum of PG 2302+029 ---Ejected or Intervening?
B. T. Jannuzi, G. F. Hartig, S. Kirhakos +9
We report the discovery of a high-ionization broad absorption line system at a redshift of z_abs=0.695 in the spectrum of the z_em=1.052 radio-quiet quasar PG 2302+039. Broad absor…