VizieR Online Data Catalog: Galaxy clusters from the DESI surveys. I. (Zou+, 2021)
Abstract
The Dark Energy Spectroscopic Instrument (DESI) is planned to conduct a large-scale spectroscopic survey with 5000-fiber robots installed on the focal plane of the 4m Mayall telescope at Kitt Peak, Arizona. It will measure the redshifts of about 35 million galaxies and quasars over a 5yr period (2019-2024), aiming to explore the structure growth and expansion history of the universe.
The DESI legacy imaging surveys are designed to provide spectroscopic targets for DESI. They are composed of three public optical surveys including the Beijing-Arizona Sky Survey (Zou+ 2017PASP..129f4101Z), the Dark Energy Camera Legacy Survey (Blum+ 2016AAS...22831701B), and the Mayall z-band legacy survey (Silva+ 2016AAS...22831702S), which jointly image a sky area of ~14000deg2 in the g, r, and z bands. The legacy surveys also integrate the latest WISE observations and provide deep force photometry in two WISE bands, W1 and W2 (Lang+ 2016AJ....151...36L & Meisner+ 2019PASP..131l4504M). The latest data release (DR8) covers an area of about 20000deg2 in both northern and southern Galactic caps, which includes additional data from the Dark Energy Survey (Dark Energy Survey Col.+ 2016MNRAS.460.1270D). The optical imaging depths are 1.5-2mag deeper than the SDSS and the infrared W1 and W2 bands are about 1-1.5mag deeper than the official WISE data. Throughout this paper, we assume a ΛCDM cosmology with Ωm=0.3, ΩΛ=0.7, and H0=70km/s/Mpc. (2 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- July 2021
- DOI:
- 10.26093/cds/vizier.22530056
- Bibcode:
- 2021yCat..22530056Z
- Keywords:
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- Clusters: galaxy;
- Redshifts;
- Photometry: ugriz;
- Photometry: infrared;
- Surveys