Spectroscopic Target Selection in the Sloan Digital Sky Survey: The Main Galaxy Sample
- M. Strauss, D. Weinberg, I. Zehavi
- Physics
- 13 June 2002
We describe the algorithm that selects the main sample of galaxies for spectroscopy in the Sloan Digital Sky Survey (SDSS) from the photometric data obtained by the imaging survey. Galaxy photometric…
The Galaxy Luminosity Function and Luminosity Density at Redshift z = 0.1
- M. Blanton, D. Hogg, D. Weinberg
- Physics
- 9 October 2002
Using a catalog of 147,986 galaxy redshifts and fluxes from the Sloan Digital Sky Survey (SDSS), we measure the galaxy luminosity density at z = 0.1 in five optical bandpasses corresponding to the…
Sloan Digital Sky Survey: Early Data Release
- C. Stoughton, R. Lupton, Wei Zheng
- Physics
- 2002
The Sloan Digital Sky Survey (SDSS) is an imaging and spectroscopic survey that will eventually cover approximately one-quarter of the celestial sphere and collect spectra of ≈106 galaxies, 100,000…
Cold collapse and the core catastrophe
- B. Moore, T. Quinn, F. Governato, J. Stadel, G. Lake
- Physics
- 11 March 1999
We show that a universe dominated by cold dark matter fails to reproduce the rotation curves of dark matter dominated galaxies, one of the key problems that it was designed to resolve. We perform…
Dark Matter Substructure within Galactic Halos
We use numerical simulations to examine the substructure within galactic and cluster mass halos that form within a hierarchical universe. Clusters are easily reproduced with a steep mass spectrum of…
Resolving the Structure of Cold Dark Matter Halos
- B. Moore, F. Governato, T. Quinn, J. Stadel, G. Lake
- Physics
- 5 September 1997
We examine the effects of mass resolution and force softening on the density profiles of cold dark matter halos that form within cosmological N-body simulations. As we increase the mass and force…
The Structure of Cold Dark Matter Halos
. High resolution N-body simulations show that the density pro-(cid:12)les of dark matter halos formed in the standard CDM cosmogony can be (cid:12)t accurately by scaling a simple \universal"…
Density Profiles and Substructure of Dark Matter Halos: Converging Results at Ultra-High Numerical Resolution
Can dissipationless N-body simulations be used to reliably determine the structural and substructure properties of dark matter halos? A large simulation of a galaxy cluster in a cold dark matter…
THE ACS NEARBY GALAXY SURVEY TREASURY
- J. Dalcanton, B. Williams, T. Quinn
- Physics
- 1 December 2007
The ACS Nearby Galaxy Survey Treasury (ANGST) is a systematic survey to establish a legacy of uniform multi-color photometry of resolved stars for a volume-limited sample of nearby galaxies (D < 4…
Great Circle Tidal Streams: Evidence for a Nearly Spherical Massive Dark Halo around the Milky Way
An all-high-latitude sky survey for cool carbon giant stars in the Galactic halo has revealed 75 such stars, of which the majority are new detections. Of these, more than half are clustered on a…
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