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相关论文: The Observed Evolution of Galaxy Clustering Vs. Ep…

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We study the clustering of galaxies as a function of spectral type and redshift in the range $0.35 < z < 1.1$ using data from the Advanced Large Homogeneous Area Medium Band Redshift Astronomical (ALHAMBRA) survey. The data cover 2.381…

We investigate the star-formation properties of dynamically relaxed galaxy clusters as a function of cluster mass for 308 low-redshift clusters drawn from the Sloan Digital Sky Survey (SDSS) C4 cluster catalog. It is important to establish…

天体物理学 · 物理学 2009-11-13 Rose A. Finn , Michael L. Balogh , Dennis Zaritsky , Christopher J. Miller , Robert C. Nichol

The redshift evolution of the galaxy two-point correlation function is a fundamental cosmological statistic. To identify similar galaxy populations at different redshifts, we select a strict volume-limited sample culled from the 6100…

天体物理学 · 物理学 2009-10-31 R. G. Carlberg , H. K. C. Yee , S. L. Morris , H. Lin , P. B. Hall , D. Patton , M. Sawicki , C. W. Shepherd

In the theory of structure formation, galaxies are biased tracers of the underlying matter density field. The statistical relation between galaxy and matter density field is commonly referred as galaxy bias. In this paper, we test the…

宇宙学与河外天体物理 · 物理学 2015-06-04 Eric Jullo , Jason Rhodes , Alina Kiessling , James E. Taylor , Richard Massey , Joel Berge , Carlo Schimd , Jean-Paul Kneib , Nick Scoville

We measure the evolution of clustering for galaxies with different spectral types from 6495 galaxies with 17.5<=I_AB<=24 and measured spectroscopic redshift in the first epoch VIMOS-VLT Deep Survey. We classify our sample into 4 classes,…

We investigate the variation of galaxy clustering with luminosity using the recently completed SSRS2 sample. Clustering measurements based on the two-point correlation function and the variance of counts in cells reveal the existence of a…

天体物理学 · 物理学 2009-10-28 C. Benoist , S. Maurogordato , L. N. da Costa , A. Cappi , R. Schaeffer

We present a detailed investigation of the changing relationship between galaxies and the dark matter haloes they inhabit from z~1.2 to the present day. We do this by comparing precise galaxy clustering measurements over 133 deg2 of the…

宇宙学与河外天体物理 · 物理学 2015-05-28 J. Coupon , M. Kilbinger , H. J. McCracken , O. Ilbert , S. Arnouts , Y. Mellier , U. Abbas , S. de la Torre , Y. Goranova , P. Hudelot , J. -P. Kneib , O. Le fèvre

We follow the evolution of the galaxy population in a Lambda-CDM cosmology by means of high-resolution N-body simulations in which the formation of galaxies and their observable properties are calculated using a semi-analytic model. We…

天体物理学 · 物理学 2009-11-06 A. J. Benson , C. S. Frenk , C. M. Baugh , S. Cole , C. G. Lacey

We have used the projected two-point correlation function, $w(r_p)$, to investigate the spatial distribution of the 591 galaxies with secure redshifts between $0 \leq z \leq 1.3$ in the five CFRS fields. The slope of the two-point…

天体物理学 · 物理学 2016-08-30 O. Le Fevre , D. Hudon , S. J. Lilly , D. Crampton , F. Hammer , L. Tresse

We measure the redshift-dependent luminosity function and the comoving radial density of galaxies in the Sloan Digital Sky Survey Data Release 1 (SDSS DR1). Both measurements indicate that the apparent number density of bright galaxies…

天体物理学 · 物理学 2009-11-10 Jon Loveday

In this letter I present results from a correlation analysis of three galaxy redshift catalogs: the SSRS2, the CfA2 and the PSCz. I will focus on the observation that the amplitude of the two--point correlation function rises if the depth…

天体物理学 · 物理学 2010-12-17 Martin Kerscher

In a galaxy redshift survey the objects to be targeted for spectra are selected from a photometrically observed sample. The observed magnitudes and colours of galaxies in this parent sample will be affected by their peculiar velocities,…

宇宙学与河外天体物理 · 物理学 2017-09-25 Shadab Alam , Rupert A. C. Croft , Shirley Ho , Hongyu Zhu , Elena Giusarma

A critical issue in studying the evolution of galaxy clusters is to find ways that enable meaningful comparisons of clusters observed at different redshifts, as well as in various stages of their growth. Studies in the past have typically…

星系天体物理 · 物理学 2025-03-19 Yen-Ting Lin , Kai-Feng Chen , Tsung-Chi Chen , Chen-Yu Chuang , Masamune Oguri

The evolution of quasar clustering is investigated with a new sample of 388 quasars with 0.3<z<=2.2, B<=20.5 and Mb<-23, selected over an area of 24.6 sq. deg. in the South Galactic Pole. Assuming a two-point correlation function of the…

天体物理学 · 物理学 2009-10-30 Fabio La Franca , Paola Andreani , Stefano Cristiani

We investigate the clustering of galaxy groups and clusters in the SDSS using the Berlind et al. (2006) group sample, which is designed to identify galaxy systems that each occupy a single dark matter halo. We estimate group masses from…

We use the Gigaparsec WiggleZ (GiggleZ) simulations to characterise galaxy bias and its scale dependence for a range of redshifts and halo masses in a standard $\Lambda$LCDM cosmology. Assuming bias converges to a scale independent form at…

We study the impact of lensing magnification on the observed three-dimensional galaxy clustering in redshift space. We used the RayGal suite of N-body simulations, from which we extracted samples of dark matter particles and haloes in the…

宇宙学与河外天体物理 · 物理学 2022-05-25 Michel-Andrès Breton , Sylvain de la Torre , Jade Piat

Strong cluster eccentricity evolution for $z \le 0.13$ has appeared in a variety of observational data sets. We examine the evolution of eccentricity in simulated galaxy clusters using a variety of simulation methodologies, amplitude…

天体物理学 · 物理学 2009-11-07 Stephen Floor , Adrian Melott , Christopher Miller , Greg Bryan

A precise understanding of the relations between observable X-ray properties of galaxy clusters and cluster mass is a vital part of the application of X-ray galaxy cluster surveys to test cosmological models. An understanding of how these…

宇宙学与河外天体物理 · 物理学 2015-05-30 A. Reichert , H. Böhringer , R. Fassbender , M. Mühlegger

We discuss the evolution of clustering of galaxies in the Universe from the present epoch back to z ~ 2, using the first-epoch data from the VIMOS-VLT Deep Survey (VVDS). We present the evolution of the projected two-point correlation…