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斯隆数字巡天III光度计发光星系的成簇:测量、系统学和宇宙学意义

Clustering of Sloan Digital Sky Survey III Photometric Luminous Galaxies: The Measurement, Systematics and Cosmological Implications

Shirley Ho, Antonio Cuesta, Hee-Jong Seo, Roland de Putter, Ashley J. Ross, Martin White, Nikhil Padmanabhan, Shun Saito, David J. Schlegel, Eddie Schlafly, Uro… 展开作者

Shirley Ho, Antonio Cuesta, Hee-Jong Seo, Roland de Putter, Ashley J. Ross, Martin White, Nikhil Padmanabhan, Shun Saito, David J. Schlegel, Eddie Schlafly, Uros Seljak, Carlos Hernandez-Monteagudo, Ariel G. Sanchez, Will J. Percival, Michael Blanton, Ramin Skibba, Don Schneider, Beth Reid, Olga Mena, Matteo Viel, Daniel J. Eisenstein, Francisco Prada, Benjamin Weaver, Neta Bahcall, Dimitry Bizyaev, Howard Brewinton, Jon Brinkman, Luiz Nicolaci da Costa, John R. Gott, Elena Malanushenko, Viktor Malanushenko, Bob Nichol, Daniel Oravetz, Kaike Pan, Nathalie Palanque-Delabrouille, Nicholas P Ross, Audrey Simmons, Fernando de Simoni, Stephanie Snedden, Christophe Yeche

摘要:

斯隆数字巡天(SDSS)测量了14,555平方度,并提供了超过一万亿像素的成像数据。我们使用90万个光度红移在$z=0.45$和$z=0.65$之间的发光星系进行星系聚类研究,使用Ross等人(2011)描述的方法从SDSS构建。这个数据集跨越11,000平方度,探测了$3h^{-3} \rm{Gpc}^3$的体积,使其成为有史以来用于星系团测量的最大体积。我们提出了一种新的治疗的观察系统学及其应用程序的聚类信号的数据集。本文用最优二次估计方法测量了重子声学振荡(BAO)尺度(l~40-400)上4个红移切片上的角聚集,在delta_l = 10的面元大小下,测量精度为~15%.我们推导出宇宙学约束使用的功率谱的全形状。对于一个平坦的Lambda CDM模型,结合宇宙微波背景Wilkinson微波各向异性探测器7(WMAP 7)和HST观测到的600颗造父变星的H 0约束,我们得到Ω_Λ= 0.73 ± 0.019,H 0 = 70.5 ± 1.6 km/s/Mpc。对于一个开放的Lambda CDM模型,当结合WMAP 7 + HST时,我们发现$Ω_K = 0.0035 +/- 0.0054,比单独的WMAP 7 +HST提高了40%。对于wCDM模式,当与WMAP 7 +HST+SN相结合时,我们得到了w = -1.071 +/- 0.078,H 0 = 71.3 +/- 1.7 km/s/Mpc,这与SDSS Data Release 7(DR 7)等大型光谱观测的最新大尺度结构约束是有竞争力的(Reid等人,2010年; Percival等人,2010年; Montesano等人,2011年)和WiggleZ(Blake等人,2011年)。SDSS-III数据发布8(SDSS-III DR 8)角聚类数据允许对宇宙学模型,宇宙膨胀(通过BAO),初始条件的高斯性和中微子质量进行广泛的研究。(节略)

英文摘要:

The Sloan Digital Sky Survey (SDSS) surveyed 14,555 square degrees, and delivered over a trillion pixels of imaging data. We present a study of galaxy clustering using 900,000 luminous galaxies with photometric redshifts, spanning between $z=0.45$ and $z=0.65$, constructed from the SDSS using methods described in Ross et al. (2011). This data-set spans 11,000 square degrees and probes a volume of $3h^{-3} \rm{Gpc}^3$, making it the largest volume ever used for galaxy clustering measurements. We present a novel treatment of the observational systematics and its applications to the clustering signals from the data set. In this paper, we measure the angular clustering using an optimal quadratic estimator at 4 redshift slices with an accuracy of ~15% with bin size of delta_l = 10 on scales of the Baryon Acoustic Oscillations (BAO) (at l~40-400). We derive cosmological constraints using the full-shape of the power-spectra. For a flat Lambda CDM model, when combined with Cosmic Microwave Background Wilkinson Microwave Anisotropy Probe 7 (WMAP7) and H_0 constraints from 600 Cepheids observed by HST, we find Ω_Λ= 0.73 +/- 0.019 and H_0 to be 70.5 +/- 1.6 km/s/Mpc. For an open Lambda CDM model, when combined with WMAP7 + HST, we find $Ω_K = 0.0035 +/- 0.0054, improved over WMAP7+HST alone by 40%. For a wCDM model, when combined with WMAP7+HST+SN, we find w = -1.071 +/- 0.078, and H_0 to be 71.3 +/- 1.7 km/s/Mpc, which is competitive with the latest large scale structure constraints from large spectroscopic surveys such as SDSS Data Release 7 (DR7) (Reid et al. 2010, Percival et al. 2010, Montesano et al. 2011) and WiggleZ (Blake et al. 2011). The SDSS-III Data Release 8 (SDSS-III DR8) Angular Clustering Data allows a wide range of investigations into the cosmological model, cosmic expansion (via BAO), Gaussianity of initial conditions and neutrino masses. (abridged)

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