期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 433, 期 2, 页码 1146-1160出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stt797
关键词
galaxies: evolution; galaxies: haloes; galaxies: statistics; cosmology: observations; dark matter; large-scale structure of Universe
资金
- Alfred P. Sloan Foundation
- National Science Foundation
- US Department of Energy Office of Science
- University of Arizona
- Brazilian Participation Group
- Brookhaven National Laboratory
- University of Cambridge
- Carnegie Mellon University
- University of Florida
- French Participation Group
- German Participation Group
- Harvard University
- Instituto de Astrofisica de Canarias
- Michigan State/Notre Dame/JINA Participation Group
- Johns Hopkins University
- Lawrence Berkeley National Laboratory
- Max Planck Institute for Astrophysics
- Max Planck Institute for Extraterrestrial Physics
- New Mexico State University
- New York University
- Ohio State University
- Pennsylvania State University
- University of Portsmouth
- Princeton University
- Spanish Participation Group
- University of Tokyo
- University of Utah
- Vanderbilt University
- University of Virginia
- University of Washington
- Yale University
- Agence Nationale de la Recherche [ANR-08-BLAN-0222]
- National Aeronautics and Space Administration
- Spanish MultiDark Consolider Project [CSD2009-00064]
- Ministry of Science, Technology and Inovation (MCTI) of Brazil
- Agence Nationale de la Recherche (ANR) [ANR-08-BLAN-0222] Funding Source: Agence Nationale de la Recherche (ANR)
The baryon acoustic oscillation (BAO) feature in the two-point correlation function of galaxies supplies a standard ruler to probe the expansion history of the Universe. We study here several galaxy selection schemes, aiming at building an emission-line galaxy (ELG) sample in the redshift range 0.6 < z < 1.7, that would be suitable for future BAO studies, providing a highly biased galaxy sample. We analyse the angular galaxy clustering of galaxy selections at the redshifts 0.5, 0.7, 0.8, 1 and 1.2 and we combine this analysis with a halo occupation distribution (HOD) model to derive the properties of the haloes these galaxies inhabit, in particular the galaxy bias on large scales. We also perform a weak lensing analysis (aperture statistics) to extract the galaxy bias and the cross-correlation coefficient and compare to the HOD prediction. We apply this analysis on a data set composed of the photometry of the deep co-addition on Sloan Digital Sky Survey (SDSS) Stripe 82 (225 deg(2)), of Canada-France-Hawaii Telescope/Stripe 82 deep i-band weak lensing survey and of the Wide-Field Infrared Survey Explorer infrared photometric band W1. The analysis on the SDSS-III/constant mass galaxies selection at z = 0.5 is in agreement with previous studies on the tracer, moreover we measure its cross-correlation coefficient r = 1.16 +/- 0.35. For the higher redshift bins, we confirm the trends that the brightest galaxy populations selected are strongly biased (b > 1.5), but we are limited by current data sets depth to derive precise values of the galaxy bias. A survey using such tracers of the mass field will guarantee a high significance detection of the BAO.
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