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相关论文: The two-point correlation function and morphologic…

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We derive an analytic expression for the two-point correlation function in redshift space which (i) is nonlinear; (ii) is valid on the full sky, i.e. the distant-observer limit is not assumed; (iii) can account for the effect of…

宇宙学与河外天体物理 · 物理学 2023-11-08 Lawrence Dam , Camille Bonvin

We show, with the help of large N-body simulations, that the real-space two-point correlation function and pairwise velocity dispersion of galaxies can both be measured reliably from the Las Campanas Redshift Survey. The real-space…

天体物理学 · 物理学 2008-11-26 Y. P. Jing , H. J. Mo , G. Boerner

We present measurements of the quasar two-point correlation function, \xi_{Q}, over the redshift range z=0.3-2.2 based upon data from the SDSS. Using a homogeneous sample of 30,239 quasars with spectroscopic redshifts from the DR5 Quasar…

We study the redshift space correlation function of galaxy clusters for observational samples constructed in different surveys. We explore correlation amplitudes, pairwise velocity distributions and bias factors. Systematics in cluster…

天体物理学 · 物理学 2009-11-07 N. D. Padilla , D. G. Lambas

We have used integral two-point spatial correlation function and its second derivative to analyze the distribution of quasars in three very deep surveys published in the literature. Statistically significant ($\sim 2-3\sigma $) correlations…

天体物理学 · 物理学 2007-05-23 Andrey V. Kravtsov

We show how the cosmological constant can be estimated from redshift surveys at different redshifts, using maximum-likelihood techniques. The apparent redshift-space clustering on large scales (\simgt 20 \himpc) are affected in the radial…

天体物理学 · 物理学 2009-11-06 Takahiko Matsubara , Alexander S. Szalay

We present an analytic model for the galaxy two-point correlation function in redshift space. The model is constructed within the framework of the Halo Occupation Distribution (HOD), which quantifies galaxy bias on linear and non- linear…

天体物理学 · 物理学 2008-11-26 Jeremy L. Tinker

We present clustering measurements for samples of galaxies selected by morphological type and luminosity from the recently completed Stromlo-APM Redshift Survey. Early type galaxies are clustered more strongly by a factor 3.5--5.5, than…

天体物理学 · 物理学 2009-10-22 J. Loveday , S. J. Maddox , G. Efstathiou , B. A. Peterson

This is the first paper of a series where we study the clustering of LRG galaxies in the latest spectroscopic SDSS data release, DR6, which has 75000 LRG galaxies covering over 1 $Gpc^3/h^3$ at $0.15<z<0.47$. Here we focus on modeling…

天体物理学 · 物理学 2009-11-13 Anna Cabre , Enrique Gaztanaga

The 2-point angular correlation function of galaxies, \wt, has been computed on equatorial fields observed with the CTIO 4m prime focus, within a total area of 2.31 deg$^2$. In the magnitude range $19\le m_R \le 21.5$, corresponding to…

天体物理学 · 物理学 2009-10-28 L. Infante , D. F. de Mello , F. Menanteau

Galaxies are not uniformly distributed in space. On large scales the Universe displays coherent structure, with galaxies residing in groups and clusters on scales of ~1-3 Mpc/h, which lie at the intersections of long filaments of galaxies…

宇宙学与河外天体物理 · 物理学 2015-06-04 Alison L. Coil

We have investigated the dependence of galaxy clustering on their intrinsic luminosities at z ~ 1, using the data from the First Epoch VIMOS-VLT Deep Survey (VVDS). We have measured the projected two-point correlation function of galaxies,…

天体物理学 · 物理学 2007-05-23 A. Pollo , L. Guzzo , O. Le Fevre , B. Meneux , the VVDS team

A detailed analysis of the galaxy distribution in the Southern Sky Redshift Survey (SSRS) by means of the multifractal or scaling formalism is presented. It is shown that galaxies cluster in different ways according to their morphological…

天体物理学 · 物理学 2009-10-22 A. Campos , R. Dominguez-Tenreiro , G. Yepes

Understanding the clustering of galaxies has long been a goal of modern observational cosmology. Utilizing our photometric redshift technique a volume limited sample containing more than 2 million galaxies is constructed from the SDSS…

The Red-Sequence Cluster Survey (RCS) is a 100 deg^2 galaxy cluster survey designed to provide a large sample of optically selected clusters of galaxies with redshifts 0.1<z<1.4. The survey data are also useful for a variety of lensing…

天体物理学 · 物理学 2007-05-23 Henk Hoekstra , H. K. C. Yee , Michael D. Gladders

We compute the real-space cluster-galaxy cross-correlation xi_cg(r) using the ROSAT-ESO Flux Limited X-ray (REFLEX) cluster survey, a group catalogue constructed from the final version of the 2dFGRS, and galaxies extracted from 2MASS and…

天体物理学 · 物理学 2009-11-10 Ariel G. Sanchez , Diego G. Lambas , Hans Boehringer , Peter Schuecker

This is the first in a series of papers describing the {\it Optical Redshift Survey} (ORS), a redshift survey of optically selected galaxies covering 98\% of the sky above $|b| = 20^\circ$ (8.09 ster). The survey is drawn from the UGC, ESO,…

天体物理学 · 物理学 2009-10-22 B. X. Santiago , M. A. Strauss , O. Lahav , M. Davis , A. Dressler , J. Huchra

We present the Observations of Redshift Evolution in Large Scale Environments (ORELSE) survey, a systematic search for structure on scales greater than 10 Mpc around 20 well-known clusters at 0.6 < z < 1.3. We describe the survey design,…

天体物理学 · 物理学 2009-11-13 L. M. Lubin , R. R. Gal , B. C. Lemaux , D. D. Kocevski , G. K. Squires

(Abridged) We study the two-point correlation function of a uniformly selected sample of 4,426 luminous optical quasars with redshift $2.9 \le z\le 5.4$ selected over 4041 deg$^2$ from the Fifth Data Release of the Sloan Digital Sky Survey.…