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Related papers: An Improved Cluster Richness Estimator

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We have re-examined the nature of the cluster galaxy luminosity function using the data from the Edinburgh-Durham Southern Galaxy Catalogue and the Edinburgh-Milano Redshift Survey. We derive a best fit luminosity function over the range…

Astrophysics · Physics 2015-06-24 S. L. Lumsden , C. A. Collins , R. C. Nichol , V. R. Eke , L. Guzzo

We investigate the dependence of several galaxy properties on the environment and cluster identification techniques. We select clusters of galaxies from two catalogues based on the SDSS: the ROSAT-SDSS Galaxy Cluster Survey, and the MaxBCG…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 V. Coenda , H. Muriel

We cross-correlate the 100 um Improved Reprocessing of the IRAS Survey (IRIS) map and galaxy clusters at 0.1 < z < 0.3 in the maxBCG catalogue taken from the Sloan Digital Sky Survey, measuring an angular cross-power spectrum over multipole…

Cosmology and Nongalactic Astrophysics · Physics 2013-05-08 Adam D. Hincks , Amir Hajian , Graeme E. Addison

We present a study of multiwavelength X-ray and weak lensing scaling relations for a sample of 50 clusters of galaxies. Our analysis combines Chandra and XMM-Newton data using an energy-dependent cross-calibration. After considering a…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 A. Mahdavi , H. Hoekstra , A. Babul , C. Bildfell , T. Jeltema , J. P. Henry

The on-going X-ray all-sky survey with the eROSITA instrument will yield large galaxy cluster samples, which will bring strong constraints on cosmological parameters. In particular, the survey holds great promise to investigate the tension…

Cosmology and Nongalactic Astrophysics · Physics 2020-09-11 Dominique Eckert , Alexis Finoguenov , Vittorio Ghirardini , Sebastian Grandis , Florian Kaefer , Jeremy S. Sanders , Miriam Ramos-Ceja

Comparisons between observed and predicted strong lensing properties of galaxy clusters have been routinely used to claim either tension or consistency with $\Lambda$CDM cosmology. However, standard approaches to such cosmological tests are…

Building a comprehensive catalog of galaxy clusters is a fundamental task for the studies on the structure formation and galaxy evolution. In this paper, we present COSMIC (Cluster Optical Search using Machine Intelligence in Catalogs), an…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-29 Da-Chuan Tian , Yang Yang , Zhong-Lue Wen , Jun-Qing Xia

Scaling relations of clusters have made them particularly important cosmological probes of structure formation. In this work, we present a comprehensive study of the relation between two profile observables, concentration…

Cosmology and Nongalactic Astrophysics · Physics 2015-11-23 Austen M. Groener , David M. Goldberg , Mauro Sereno

We use the galaxy cluster X-ray temperature distribution function to constrain the amplitude of the power spectrum of density inhomogeneities on the scale corresponding to clusters. We carry out the analysis for critical density universes,…

Astrophysics · Physics 2015-06-24 Pedro T P Viana , Andrew R Liddle

We construct samples of optically-selected clusters and photometric luminous red galaxies (LRGs) from the Hyper Suprime-Cam Subaru Strategic Program final year dataset covering $\sim 1200$~deg$^2$. The cluster catalogs extend out to the…

We analyze a sample of 105 clusters having virial mass homogeneously estimated and for which galaxy magnitudes are available with a well defined high degree of completeness. In particular, we consider a subsample of 89 clusters with B_j…

Astrophysics · Physics 2008-11-26 M. Girardi , S. Borgani , G. Giuricin , F. Mardirossian , M. Mezzetti , ;

Galaxy clusters have their unique advantages for cosmology. Here we collect a new sample of 10 lensing galaxy clusters with X-ray observations to constrain cosmological parameters.The redshifts of lensing clusters lie between 0.1 and 0.6,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Heng Yu , Zong-Hong Zhu

In this paper, we motivate the use of galaxy clustering measurements using photometric redshift information, including a contribution from flux magnification, as a probe of cosmology. We present cosmological forecasts when clustering data…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Christopher Duncan , Benjamin Joachimi , Alan Heavens , Catherine Heymans , Hendrik Hildebrandt

We use the ROSAT Deep Cluster Survey (RDCS) to trace the evolution of the cluster abundance out to $z\simeq 0.8$ and constrain cosmological models. We resort to a phenomenological prescription to convert masses into $X$-ray fluxes and apply…

Astrophysics · Physics 2007-05-23 S. Borgani , P. Rosati , R. Della Ceca , P. Tozzi , C. Norman

We present measurements of the excess mass-to-light ratio measured aroundMaxBCG galaxy clusters observed in the SDSS. This red sequence cluster sample includes objects from small groups with masses ranging from ~5x10^{12} to ~10^{15}…

A multi-object spectroscopy follow-up survey of galaxy clusters selected from the Red-sequence Cluster Survey (RCS) is being completed. About forty clusters were chosen with redshifts from 0.15 to 0.6, and in a wide range of richnesses. One…

Astrophysics · Physics 2009-11-10 K. Blindert , H. K. C. Yee , E. Ellingson , M. D. Gladders

We present a theoretical model which aims at predicting the clustering properties of X-ray clusters in flux-limited surveys for different cosmological scenarios. The model uses the theoretical and empirical relations between mass,…

Galaxy clusters provide an avenue to expand our knowledge of cosmology and galaxy evolution. Because it is difficult to accurately measure the total mass of a large number of individual clusters, cluster samples are typically selected using…

Cosmology and Nongalactic Astrophysics · Physics 2024-09-25 Roi Kugel , Joop Schaye , Matthieu Schaller , Ian G. McCarthy , Joey Braspenning , John C. Helly , Victor J. Forouhar Moreno , Robert J. McGibbon

There is a known tension between cosmological parameter constraints obtained from the primary CMB and those from galaxy cluster samples. One possible explanation could be certain types of groups or clusters of galaxy have been missed in the…

Cosmology and Nongalactic Astrophysics · Physics 2022-02-02 Weiwei Xu , Miriam E. Ramos-Ceja , Florian Pacaud , Thomas H. Reiprich , Thomas Erben

We present the results of a simple but robust morphological classification of a statis- tically complete sample of 108 of the most X-ray luminous clusters at 0.15 < z < 0.7 observed with Chandra. Our aims are to (a) identify the most…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Andrew W. Mann , Harald Ebeling