Preliminary Target Selection for the DESI Luminous Red Galaxy (LRG) Sample
Abstract
The DESI survey will observe more than 8 million candidate luminous red galaxies (LRGs) in the redshift range 0.3 < z < 1.0. Here we present a preliminary version of the DESI LRG target section developed using Legacy Surveys Data Release 8 g, r, z and W1 photometry. This selection yields a sample with a uniform surface density of ∼600 deg-2 and very low predicted stellar contamination and redshift failure rates. During DESI Survey Validation, updated versions of this selection will be tested and optimized.
- Publication:
-
Research Notes of the American Astronomical Society
- Pub Date:
- October 2020
- DOI:
- 10.3847/2515-5172/abc0f4
- arXiv:
- arXiv:2010.11282
- Bibcode:
- 2020RNAAS...4..181Z
- Keywords:
-
- Large-scale structure of the universe;
- Observational cosmology;
- Redshift surveys;
- 902;
- 1146;
- 1378;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- 4 pages, 1 figure