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10 papers · 2 filters
Colors of 2625 Quasars at 0<z<5 Measured in the Sloan Digital Sky Survey Photometric System
Gordon T. Richards, Xiaohui Fan, Donald P. Schneider +3
We present an empirical investigation of the colors of quasars in the Sloan Digital Sky Survey (SDSS) photometric system. The sample studied includes 2625 quasars with SDSS photome…
The Chandra Multi-wavelength Project (ChaMP): a serendipitous survey with Chandra archival data
B. J. Wilkes, P. Green, R. Brissenden +34
The launch of the Chandra X-ray Observatory in July 1999 opened a new era in X-ray astronomy. Its unprecedented, <0.5" spatial resolution and low background are providing views of…
The Razor's Edge: Magnetic Fields and Their Fundamental Role in Star Formation and Observations of Protostellar Coress
Glenn E. Ciolek, Shantanu Basu
We review theoretical models of the early stages of star formation, in which gravitational collapse is strongly regulated by magnetic fields and the associated process of ambipolar…
On the Timescale for the Formation of Protostellar Cores in Magnetic Interstellar Clouds
Glenn E. Ciolek, Shantanu Basu
We revisit the problem of the formation of dense protostellar cores due to ambipolar diffusion within magnetically supported molecular clouds, and derive an analytical expression f…
The Sloan Digital Sky Survey: Technical Summary
D. G. York
The Sloan Digital Sky Survey (SDSS) will provide the data to support detailed investigations of the distribution of luminous and non- luminous matter in the Universe: a photometric…
The Discovery of a Luminous z=5.80 Quasar from the Sloan Digital Sky Survey
X. Fan, R. L. White, M. Davis +8
We present observations of SDSSp J104433.04--012502.2, a luminous quasar at z=5.80 discovered from Sloan Digital Sky Survey (SDSS) multicolor imaging data. This object was selected…