Results 91 to 100 of about 48,997 (217)

Weak Lensing by High‐Redshift Clusters of Galaxies. I. Cluster Mass Reconstruction

The Astrophysical Journal, 2000
43 pages, 15 figures, uses aastex, submitted to ApJ 4 color plates produced here as jpg's, larger versions of the jpgs can be found at http://www.mpa-garching.mpg.de ...
Clowe, D., Luppino, G., Kaiser, N., Gioia, I.   +3 more
openaire   +2 more sources

Selecting Clusters and Protoclusters via Stellar Mass Density. I. Method and Tests on Mock HSC-SSP Catalogs

The Astrophysical Journal
We present an algorithm designed to identify galaxy (proto)clusters in wide-area photometric surveys by first selecting their dominant galaxy—i.e., the brightest cluster galaxy (BCG) or protoBCG—through the local stellar mass density traced by massive ...
Marcelo C. Vicentin, Pablo Araya-Araya, Laerte Sodré Jr., Michael A. Strauss   +3 more
doaj   +1 more source

What is a Cool-Core Cluster? A Detailed Analysis of the Cores of the X-ray Flux-Limited HIFLUGCS Cluster Sample

, 2009
We use the largest complete sample of 64 galaxy clusters (HIghest X-ray FLUx Galaxy Cluster Sample) with available high-quality X-ray data from Chandra, and apply 16 cool-core diagnostics to them, some of them new. We also correlate optical properties of
Allen, Ashman, Bagchi, Bauer, Baumgartner, Belsole, Blanton, Bonamente, Bridle, Buote, Burns, Bîrzan, Bîrzan, Böhringer, C. L. Sarazin, Cavagnolo, Cavaliere, Chatzikos, Chen, Clarke, Clarke, Cohen, Condon, Cortese, Cortese, Cowie, Crawford, D. S. Hudson, De Grandi, de Plaa, Dennis, Donahue, Donnelly, Drinkwater, Dunn, Dupke, Dupke, Edge, Evrard, Fabian, Fabian, Fabian, Feretti, Feretti, Feretti, Feretti, Finoguenov, Finoguenov, Finoguenov, Fujita, Fujita, Gavazzi, Giacintucci, Giovannini, Giovannini, Gonzalez, Guo, H. Andernach, Henriksen, Henriksen, Henry, Hudson, Ikebe, Johnstone, Kaastra, Kalberla, Kassim, Kempner, Kempner, Lea, Machalski, Makishima, Mann, Markevitch, Markevitch, Markevitch, Markevitch, Mathews, Mathews, Mazzotta, McNamara, McNamara, Mewe, Mewe, Mittal, Molendi, Morris, Nevalainen, Nulsen, O'Hara, Oegerle, P. E. J. Nulsen, Paturel, Peterson, Peterson, R. Mittal, Rafferty, Reiprich, Reiprich, Reiprich, Reiprich, Roettiger, Rossetti, Ruszkowski, Sakelliou, Sakelliou, Sanders, Sanders, Sanderson, Sanderson, Sanderson, Santos, Sato, Slee, Slee, Sun, Sun, Sun, T. H. Reiprich, Takizawa, Tamura, Tamura, Tittley, Venturi, Vikhlinin, Vikhlinin, Vikhlinin, Vikhlinin, Voit, Werner, Wilcoxon, Willson, Wojtak, Xu, Yamasaki, Zakamska, Zappacosta   +136 more
core   +1 more source

Forecasting the Fast Radio Burst Population Observed through Galaxy Cluster Lenses

The Astrophysical Journal
High-redshift fast radio bursts (FRBs) are expected to be extremely powerful probes of our Universe. However, while a significant number of FRBs are expected to exist at high redshift, detecting them has been difficult, with only a handful robustly ...
Mawson W. Sammons, Evan Davies-Velie, Matt Dobbs, Zarif Kader, Seth R. Siegel, Jonathan Sievers   +5 more
doaj   +1 more source

Galaxy clustering and its dependencies at high redshift

, 2021
Studies of the galaxy clustering at low and intermediate redshifts show that the relation between the luminous structure and underlying dark matter distribution is not only biased but also dependent on properties of galaxies. To understand the origin of this separation the studies need to be conducted on spectroscopic data at higher redshift. With this
openaire   +1 more source

Accelerated Structure Formation: The Early Emergence of Massive Galaxies and Clusters of Galaxies

The Astrophysical Journal
Galaxies in the early Universe appear to have grown too big too fast, assembling into massive, monolithic objects more rapidly than anticipated in the hierarchical Lambda cold dark matter (ΛCDM) structure formation paradigm.
Stacy S. McGaugh, James M. Schombert, Federico Lelli, Jay Franck   +3 more
doaj   +1 more source

High Redshift Galaxy Clusters as Probes of Cosmology

, 2001
A few, simple and qualitative examples of the potential of galaxy clusters as diagnostics of cosmology are presented. In relation to these we discuss briefly three ongoing or forthcoming cluster surveys in the optical/NIR, X-rays and the cosmic microwave radiation background.
Sommer-Larsen, Jesper, Gotz, Martin
openaire   +2 more sources

Identification of High-redshift Galaxy Overdensities in GOODS-N and GOODS-S

The Astrophysical Journal
We conduct a systematic search for high-redshift galaxy overdensities at 4.9 < z _spec < 8.9 in both the Great Observatories Origins Deep Survey (GOODS)-N and GOODS-S fields using James Webb Space Telescope/Near-Infrared Camera (JWST/NIRCam) imaging from
Jakob M. Helton, Fengwu Sun, Charity Woodrum, Kevin N. Hainline, Christopher N. A. Willmer, Marcia J. Rieke, George H. Rieke, Stacey Alberts, Daniel J. Eisenstein, Sandro Tacchella, Brant Robertson, Benjamin D. Johnson, William M. Baker, Rachana Bhatawdekar, Andrew J. Bunker, Zuyi Chen, Eiichi Egami, Zhiyuan Ji, Roberto Maiolino, Chris Willott, Joris Witstok   +20 more
doaj   +1 more source

A search for high redshift clusters associated with radio galaxies at 2 < z < 4 [PDF]

, 2001
High redshift radio galaxies are amongst the most massive galaxies in the early Universe and have properties expected from central galaxies in forming clusters.
Kurk, J. D., Miley, G. K., Pentericci, L., Roettgering, H. J. A., Venemans, B. P.   +4 more
core   +1 more source

The JWST Advanced Deep Extragalactic Survey: Discovery of an Extreme Galaxy Overdensity at z = 5.4 with JWST/NIRCam in GOODS-S

The Astrophysical Journal
We report the discovery of an extreme galaxy overdensity at z = 5.4 in the GOODS-S field using James Webb Space Telescope (JWST)/NIRCam imaging from JADES and JEMS alongside JWST/NIRCam wide-field slitless spectroscopy from FRESCO.
Jakob M. Helton, Fengwu Sun, Charity Woodrum, Kevin N. Hainline, Christopher N. A. Willmer, George H. Rieke, Marcia J. Rieke, Sandro Tacchella, Brant Robertson, Benjamin D. Johnson, Stacey Alberts, Daniel J. Eisenstein, Ryan Hausen, Nina R. Bonaventura, Andrew Bunker, Stephane Charlot, Mirko Curti, Emma Curtis-Lake, Tobias J. Looser, Roberto Maiolino, Chris Willott, Joris Witstok, Kristan Boyett, Zuyi Chen, Eiichi Egami, Ryan Endsley, Raphael E. Hviding, Daniel T. Jaffe, Zhiyuan Ji, Jianwei Lyu, Lester Sandles   +30 more
doaj   +1 more source