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We identify 47,600 clusters of galaxies from photometric data of Two Micron All Sky Survey (2MASS), Wide-field Infrared Survey Explorer (WISE), and SuperCOSMOS, among which 26,125 clusters are recognized for the first time and mostly in the…

星系天体物理 · 物理学 2018-01-31 Z. L. Wen , J. L. Han , F. Yang

Based on the DESI Legacy Imaging Surveys released data and available spectroscopic redshifts, we identify 1.58 million clusters of galaxies by searching for the overdensity of stellar mass distribution of galaxies within redshift slices…

宇宙学与河外天体物理 · 物理学 2024-04-03 Z. L. Wen , J. L. Han

Using the photometric redshifts of galaxies from the Sloan Digital Sky Survey III (SDSS-III), we identify 132,684 clusters in the redshift range of 0.05<z<0.8. Monte Carlo simulations show that the false detection rate is less than 6% for…

宇宙学与河外天体物理 · 物理学 2012-05-01 Z. L. Wen , J. L. Han , F. S. Liu

We discuss the angular clustering of galaxy clusters at z > 1 selected within 50 sq. deg from the Spitzer Wide-Infrared Extragalactic survey. We employ a simple color selection to identify high redshift galaxies with no dependence on galaxy…

天体物理学 · 物理学 2009-11-13 Casey Papovich

This is the fourth of a series of papers on low X-ray luminosity galaxy clusters. The sample comprises 45 galaxy clusters with X-ray luminosities fainter than 0.7 10$^{44}$ erg s$^{-1}$ at redshifts lower than 0.2 in the regions of the…

星系天体物理 · 物理学 2019-05-17 A. L. O'Mill , M. V. Alonso , C. Valotto , J. L. Nilo Castellón

We present a new galaxy cluster catalog constructed from SDSS DR9 using an Adaptive Matched Filter technique. Our main catalog has 46,479 galaxy clusters with richness $\Lambda_{200} > 20$ in the redshift range 0.045 $\le z <$ 0.641 in…

宇宙学与河外天体物理 · 物理学 2020-01-23 Panchajanya Banerjee , Thad Szabo , Elena Pierpaoli , Gerardo Franco , Maria Ortiz , Aris Oramas , Brianna Tornello

Numerous methods for finding clusters at moderate to high redshifts have been proposed in recent years, at wavelengths ranging from radio to X-rays. In this paper we describe a new method for detecting clusters in two-band optical/near-IR…

天体物理学 · 物理学 2008-11-26 Michael D. Gladders , H. K. C. Yee

We identify a sample of 1959 massive clusters of galaxies in the redshift range of 0.7<z<1.0 from the survey data of Sloan Digital Sky Survey (SDSS) and Wide-field Infrared Survey Explorer (WISE). These clusters are recognized as the…

宇宙学与河外天体物理 · 物理学 2018-09-26 Z. L. Wen , J. L. Han

We present a modified adaptive matched filter algorithm designed to identify clusters of galaxies in wide-field imaging surveys such as the Sloan Digital Sky Survey. The cluster-finding technique is fully adaptive to imaging surveys with…

天体物理学 · 物理学 2009-11-13 Feng Dong , Elena Pierpaoli , James E. Gunn , Risa H. Wechsler

We present the first high redshift (0.3 < z < 1.1) galaxy clusters found by systematically identifying optical low surface brightness fluctuations in the background sky. Using spectra obtained with the Keck telescope and I-band images from…

天体物理学 · 物理学 2009-10-28 Dennis Zaritsky , Amy E. Nelson , Julianne J. Dalcanton , Anthony H. Gonzalez

Using photometric data from the Dark Energy Survey and the Wide-field Infrared Survey Explorer, we estimate photometric redshifts for 105 million galaxies using the nearest-neighbour algorithm. From such a large data base, 151,244 clusters…

宇宙学与河外天体物理 · 物理学 2022-06-07 Z. L. Wen , J. L. Han

We study a sample of 19 galaxy clusters in the redshift range $0.15<z<0.30$ with highly complete spectroscopic membership catalogues (to $K < K^{\ast}(\rm z)+1.5$) from the Arizona Cluster Redshift Survey (ACReS); individual weak-lensing…

宇宙学与河外天体物理 · 物理学 2017-10-11 Sarah L. Mulroy , Sean L. McGee , Steven Gillman , Graham P. Smith , Chris P. Haines , Jessica Democles , Nobuhiro Okabe , Eiichi Egami

We present the results of a study for galaxy orbits in galaxy clusters using a spectroscopic sample of galaxies in Sloan Digital Sky Survey (SDSS) and 2dF Galaxy Redshift Survey (2dFGRS). We have determined the member galaxies of Abell…

天体物理学 · 物理学 2008-11-26 Ho Seong Hwang , Myung Gyoon Lee

We have identified 335 galaxy cluster and group candidates, 106 of which are at z > 1, using a 4.5 um selected sample of objects from a 7.25 deg^2 region in the Spitzer Infrared Array Camera (IRAC) Shallow Survey. Clusters were identified…

We present a sample of 383 X-ray selected galaxy groups and clusters with spectroscopic redshift measurements (up to z ~ 0.79) from the 2XMMi/SDSS Galaxy Cluster Survey. The X-ray cluster candidates were selected as serendipitously detected…

宇宙学与河外天体物理 · 物理学 2014-03-05 A. Takey , A. Schwope , G. Lamer

We present a study to estimate the dust content in galaxy clusters by using one the most complete existing catalogues of galaxy clusters based on SDSS data and following two methods: the first one compares the colours of samples of galaxies…

宇宙学与河外天体物理 · 物理学 2014-11-11 C. M. Gutierrez , M. Lopez-Corredoira

Clusters of galaxies are at the intersection of cosmic filaments and are still accreting galaxies and groups along these preferential directions, but, because of their relatively low contrast on the sky, they are difficult to detect (unless…

We present a comprehensive structure detection analysis of the 0.3 square degree area of the MUSYC-ACES field which covers the Chandra Deep Field-South (CDFS). Using a density-based clustering algorithm on the MUSYC and ACES photometric and…

宇宙学与河外天体物理 · 物理学 2015-06-18 Siamak Dehghan , Melanie Johnston-Hollitt

A catalogue of galaxy clusters was obtained in an area of 414 sq deg up to a redshift $z\sim0.8$ from the Data Release 3 of the Kilo-Degree Survey (KiDS-DR3), using the Adaptive Matched Identifier of Clustered Objects (AMICO) algorithm. The…

Identifying galaxy clustering at high redshift (i.e. z > 1) is essential to our understanding of the current cosmological model. However, at increasing redshift, clusters evolve considerably in star-formation activity and so are less likely…

宇宙学与河外天体物理 · 物理学 2015-06-18 L. J. M. Davies , M. N. Bremer , E. R. Stanway , K. Husband , M. D. Lehnert , E. J. A. Mannering