Correcting for Fibre Assignment Incompleteness in the DESI Bright Galaxy Survey
| Autor: | Risa H. Wechsler, Will J. Percival, Jaime E. Forero-Romero, Gregory Tarle, Jian-hua He, John Moustakas, Carlton M. Baugh, Michael J. Wilson, David J. Brooks, Peder Norberg, Lee Stothert, Davide Bianchi, Shaun Cole, Alex Smith |
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| Přispěvatelé: | Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics ST/K00042X/1 01 natural sciences Square (algebra) ST/H008519/1 law.invention Telescope ) large-scale structure of Universe [(cosmology] statistics [Galaxies] law 0103 physical sciences observations [Cosmology] Cluster analysis 010303 astronomy & astrophysics STFC Astrophysics::Galaxy Astrophysics galaxies: statistics Physics 010308 nuclear & particles physics Astrophysics::Instrumentation and Methods for Astrophysics RCUK ST/K00087X/1 Astronomy and Astrophysics Sample (graphics) Astrophysics - Astrophysics of Galaxies Galaxy ST/M503472/1 Weighting Cardinal point Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) cosmology: observations Magnitude (astronomy) (cosmology:) large-scale structure of Universe ST/L00075X/1 [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Mon.Not.Roy.Astron.Soc. Mon.Not.Roy.Astron.Soc., 2019, 484 (1), pp.1285-1300. ⟨10.1093/mnras/stz059⟩ Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, 2019, 484 (1), pp.1285-1300. ⟨10.1093/mnras/stz059⟩ Monthly notices of the Royal Astronomical Society, 2019, Vol.484(1), pp.1285-1300 [Peer Reviewed Journal] Smith, A, He, J H, Cole, S, Stothert, L, Norberg, P, Baugh, C, Bianchi, D, Wilson, M J, Brooks, D, Forero-Romero, J E, Moustakas, J, Percival, W J, Tarle, G & Wechsler, R H 2019, ' Correcting for fibre assignment incompleteness in the DESI Bright Galaxy Survey ', Monthly Notices of the Royal Astronomical Society, vol. 484, no. 1, pp. 1285-1300 . https://doi.org/10.1093/mnras/stz059 |
| ISSN: | 0035-8711 1365-2966 |
| DOI: | 10.1093/mnras/stz059⟩ |
| Popis: | The Dark Energy Spectroscopic Instrument (DESI) Bright Galaxy Survey (BGS) will be a survey of bright, low redshift galaxies, which is planned to cover an area of ~14,000 sq deg in 3 passes. Each pass will cover the survey area with ~2000 pointings, each of area ~8 sq deg. The BGS is currently proposed to consist of a bright high priority sample to an r-band magnitude limit r ~ 19.5, with a fainter low priority sample to r ~ 20. The geometry of the DESI fibre positioners in the focal plane of the telescope affects the completeness of the survey, and has a non-trivial impact on clustering measurements. Using a BGS mock catalogue, we show that completeness due to fibre assignment primarily depends on the surface density of galaxies. Completeness is high (>95%) in low density regions, but very low ( 18 pages, 17 figures, 4 tables, accepted for publication in MNRAS |
| Databáze: | OpenAIRE |
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