The SDSS-IV eBOSS: emission line galaxy catalogues at z approximate to 0.8 and study of systematic errors in the angular clustering

	The SDSS-IV eBOSS: emission line galaxy catalogues at z approximate to 0.8 and study of systematic errors in the angular clustering
	Delubac, T.1; Raichoor, A.2; Comparat, J.3,4; Jouvel, S.5; Kneib, J. -P.1,6; Yeche, C.2; Zou, H.7 ; Brownstein, J. R.8; Abdalla, F. B.5,9; Dawson, K.8
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2017-02-01
卷号	465 期号:2 页码:1831-1846
关键词	methods: data analysis catalogues galaxies: distances and redshifts galaxies: general galaxies: photometry cosmology: observations
英文摘要	We present two wide-field catalogues of photometrically selected emission line galaxies (ELGs) at z approximate to 0.8 covering about 2800 deg(2)over the south galactic cap. The catalogues were obtained using a Fisher discriminant technique described in a companion paper. The two catalogues differ by the imaging used to define the Fisher discriminant: the first catalogue includes imaging from the Sloan Digital Sky Survey and the Wide-field Infrared Survey Explorer, the second also includes information from the South Galactic Cap U-band Sky Survey. Containing respectively 560 045 and 615 601 objects, they represent the largest ELG catalogues available today and were designed for the ELG programme of the extended Baryon Oscillation Spectroscopic Survey (eBOSS). We study potential sources of systematic variation in the angular distribution of the selected ELGs due to fluctuations of the observational parameters. We model the influence of the observational parameters using a multivariate regression and implement a weighting scheme which allows effective removal of all of the systematic errors induced by the observational parameters. We show that fluctuations in the imaging zero-points of the photometric bands have minor impact on the angular distribution of objects in our catalogues. We compute the angular clustering of both catalogues and show that our weighting procedure effectively removes spurious clustering on large scales. We fit a model to the small-scale angular clustering, showing that the selections have similar biases of 1.35/D-a(z) and 1.28/D-a(z). Both catalogues are publicly available.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	OSCILLATION SPECTROSCOPIC SURVEY ; DIGITAL SKY SURVEY ; BARYON ACOUSTIC-OSCILLATIONS ; POWER-SPECTRUM ; COSMOLOGICAL IMPLICATIONS ; TARGET SELECTION ; REDSHIFT SURVEY ; DATA RELEASE ; UNCERTAINTIES ; PHOTOMETRY
收录类别	SCI
语种	英语
WOS记录号	WOS:000393785500039
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8304]
专题	国家天文台_光学天文研究部
作者单位	1.Ecole Polytech Fed Lausanne, Observ Sauverny, Astrophys Lab, CH-1290 Versoix, Switzerland 2.CEA, Ctr Saclay, IRFU SPP, F-91191 Gif Sur Yvette, France 3.Univ Autonoma Madrid, CSIC, Inst Fis Teor, E-28049 Madrid, Spain 4.Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain 5.UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England 6.Aix Marseille Univ, CNRS, LAM, Marseille, France 7.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 8.Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA 9.Rhodes Univ, Dept Phys & Elect, ZA-6140 Grahamstown, South Africa 10.Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA
推荐引用方式 GB/T 7714	Delubac, T.,Raichoor, A.,Comparat, J.,et al. The SDSS-IV eBOSS: emission line galaxy catalogues at z approximate to 0.8 and study of systematic errors in the angular clustering[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,465(2):1831-1846.
APA	Delubac, T..,Raichoor, A..,Comparat, J..,Jouvel, S..,Kneib, J. -P..,...&Zhu, G..(2017).The SDSS-IV eBOSS: emission line galaxy catalogues at z approximate to 0.8 and study of systematic errors in the angular clustering.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,465(2),1831-1846.
MLA	Delubac, T.,et al."The SDSS-IV eBOSS: emission line galaxy catalogues at z approximate to 0.8 and study of systematic errors in the angular clustering".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 465.2(2017):1831-1846.