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The Sixth Data Release of the Sloan Digital Sky Survey
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and
The sloan digital sky survey quasar survey: Quasar luminosity function from data release 3
We determine the number counts and z = 0-5 luminosity function for a well-defined, homogeneous sample of quasars from the Sloan Digital Sky Survey (SDSS). We conservatively define the most uniform
The First Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope
The second catalog of active galactic nuclei (AGNs) detected by the Fermi Large Area Telescope (LAT) in two years of scientific operation is presented. The second LAT AGN catalog (2LAC) includes 1017
The Fifth Data Release of the Sloan Digital Sky Survey
This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I
Lyα-Emitting Galaxies at z = 3.1: L* Progenitors Experiencing Rapid Star Formation*
We studied the clustering properties and multiwavelength spectral energy distributions of a complete sample of 162 Lyα-emitting (LAE) galaxies at z 3.1 discovered in deep narrowband MUSYC imaging of
Percolation Galaxy Groups and Clusters in the SDSS Redshift Survey: Identification, Catalogs, and the Multiplicity Function
We identify galaxy groups and clusters in volume-limited samples of the Sloan Digital Sky Survey (SDSS) redshift survey, using a redshift-space friends-of-friends algorithm. We optimize the
The unprecedented optical outburst of the quasar 3C 454.3 - The WEBT campaign of 2004–2005
Context. The radio quasar 3C 454.3 underwent an exceptional optical outburst lasting more than 1 year and culminating in spring 2005. The maximum brightness detected was $R=12.0$, which represents
The physical nature of Lyα-emitting galaxies at z = 3.1
We selected 40 candidate Lyα-emitting galaxies (LAEs) at z 3.1 with observed-frame equivalent widths greater than 150 A and inferred emission-line fluxes above 2.5 × 10-17 ergs cm-2 s-1 from deep
Fermi-LAT discovery of GeV gamma-ray emission from the young supernova remnant Cassiopeia A
We report on the first detection of GeV high-energy gamma-ray emission from a young supernova remnant with the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope. These observations
Observations of the Large Magellanic Cloud with Fermi
Context: The Large Magellanic Cloud (LMC) is to date the only normal external galaxy that has been detected in high-energy gamma rays. High-energy gamma rays trace particle acceleration processes and
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