Results 41 to 50 of about 48,997 (217)

JWST PEARLS. Prime Extragalactic Areas for Reionization and Lensing Science: Project Overview and First Results

The Astronomical Journal, 2022
We give an overview and describe the rationale, methods, and first results from NIRCam images of the JWST “Prime Extragalactic Areas for Reionization and Lensing Science” (PEARLS) project.
Rogier A. Windhorst, Seth H. Cohen, Rolf A. Jansen, Jake Summers, Scott Tompkins, Christopher J. Conselice, Simon P. Driver, Haojing Yan, Dan Coe, Brenda Frye, Norman Grogin, Anton Koekemoer, Madeline A. Marshall, Rosalia O’Brien, Nor Pirzkal, Aaron Robotham, Russell E. Ryan Jr., Christopher N. A. Willmer, Timothy Carleton, Jose M. Diego, William C. Keel, Paolo Porto, Caleb Redshaw, Sydney Scheller, Stephen M. Wilkins, S. P. Willner, Adi Zitrin, Nathan J. Adams, Duncan Austin, Richard G. Arendt, John F. Beacom, Rachana A. Bhatawdekar, Larry D. Bradley, Tom Broadhurst, Cheng Cheng, Francesca Civano, Liang Dai, Hervé Dole, Jordan C. J. D’Silva, Kenneth J. Duncan, Giovanni G. Fazio, Giovanni Ferrami, Leonardo Ferreira, Steven L. Finkelstein, Lukas J. Furtak, Hansung B. Gim, Alex Griffiths, Heidi B. Hammel, Kevin C. Harrington, Nimish P. Hathi, Benne W. Holwerda, Rachel Honor, Jia-Sheng Huang, Minhee Hyun, Myungshin Im, Bhavin A. Joshi, Patrick S. Kamieneski, Patrick Kelly, Rebecca L. Larson, Juno Li, Jeremy Lim, Zhiyuan Ma, Peter Maksym, Giorgio Manzoni, Ashish Kumar Meena, Stefanie N. Milam, Mario Nonino, Massimo Pascale, Andreea Petric, Justin D. R. Pierel, Maria del Carmen Polletta, Huub J. A. Röttgering, Michael J. Rutkowski, Ian Smail, Amber N. Straughn, Louis-Gregory Strolger, Andi Swirbul, James A. A. Trussler, Lifan Wang, Brian Welch, J. Stuart B. Wyithe, Min Yun, Erik Zackrisson, Jiashuo Zhang, Xiurui Zhao   +84 more
doaj   +1 more source

Expectations For an Interferometric Sunyaev-Zel'dovich Effect Survey for Galaxy Clusters [PDF]

, 2000
Non-targeted surveys for galaxy clusters using the Sunyaev-Zel'dovich effect (SZE) will yield valuable information on both cosmology and evolution of the intra-cluster medium (ICM). The redshift distribution of detected clusters will constrain cosmology,
Barbosa D., Cavaliere A., De Luca A., Evrard A. E., Oukbir J., Peacock J., Sunyaev R., White D. A.   +7 more
core   +2 more sources

Stellar populations and evolution of early-type cluster galaxies: Constraints from optical imaging and spectroscopy of z=0.5-0.9 galaxy clusters [PDF]

, 2013
We present an analysis of stellar populations and evolutionary history of galaxies in three similarly rich galaxy clusters MS0451.6-0305 (z=0.54), RXJ0152.7-1357 (z=0.83), and RXJ1226.9+3332 (z=0.89); based on high S/N ground-based optical spectroscopy ...
Chiboucas, Kristin, Jorgensen, Inger
core   +1 more source

What are protoclusters? – Defining high-redshift galaxy clusters and protoclusters [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
We explore the structures of protoclusters and their relationship with high redshift clusters using the Millennium Simulation combined with a semi-analytic model. We find that protoclusters are very extended, with 90 per cent of their mass spread across $\sim35\,h^{-1}{\rm Mpc}$ comoving at $z=2$ ($\sim30\, \rm{arcmin}$).
Muldrew, Stuart I., Hatch, N. A., Cooke, E. A.   +2 more
openaire   +5 more sources

Galaxy Clusters Selected via the Sunyaev–Zel'dovich Effect in the SPTpol 100-square-degree Survey [PDF]

, 2020
We present a catalog of galaxy cluster candidates detected in 100 square degrees surveyed with the SPTpol receiver on the South Pole Telescope. The catalog contains 89 candidates detected with a signal-to-noise ratio greater than 4.6.
Crites, A. T., Huang, N., Moran, C. Corbett, Padin, S.   +3 more
core  

The Association of Galaxy Clusters with Moderately-High-Redshift Quasars [PDF]

Symposium - International Astronomical Union, 1986
CCD images of quasars having redshifts between 0.3 and 0.65 are analyzed to study the association of galaxies with quasars. Average luminosity functions (LF) of the excess galaxies associated with the radio-loud quasars are determined. It is found that for the sub-sample with z>0.55, there is a significant brightening of the characteristic magnitude
H. K. C. Yee, Richard F. Green
openaire   +1 more source

The Evolution of the Galaxy Cluster Luminosity-Temperature Relation

, 2002
We analyzed the luminosity-temperature (L-T) relation for 2 samples of galaxy clusters which have all been observed by the ASCA satellite.
J. Patrick Henry, Kaiser N., Manuela Sornig, Megan C. Novicki, Sadat R., White D. A.   +5 more
core   +1 more source

H-ATLAS: a candidate high redshift cluster/protocluster of star-forming galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
16 pages, 7 figures, MNRAS in ...
Clements, D. L., Braglia, F., Petitpas, G., Greenslade, J., Cooray, A., Valiante, E., de Zotti, G., O'Halloran, B., Holdship, J., Morris, B., Pérez-Fournon, I., Herranz, D., Riechers, D., Baes, M., Bremer, M., Bourne, N., Dannerbauer, H., Dariush, A., Dunne, L., Eales, S., Fritz, J., Gonzalez-Nuevo, J., Hopwood, R., Ibar, E., Ivison, R. J., Leeuw, L. L., Maddox, S., Michałowski, M. J., Negrello, M., Omont, A., Oteo, I., Serjeant, S., Valtchanov, I., Vieira, J. D., Wardlow, J., van Der Werf, P.   +35 more
openaire   +15 more sources

Evidence for a Redshifted Excess in the Intracluster Light Fractions of Merging Clusters at z ∼ 0.8

The Astrophysical Journal Letters
The intracluster light (ICL) fraction is a well-known indicator of the dynamical activity in intermediate-redshift clusters. Merging clusters in the redshift interval 0.18 < z < 0.56 have a distinctive peak in the ICL fractions measured between ∼3800 and
Yolanda Jiménez-Teja, Renato A. Dupke, Paulo A. A. Lopes, Paola Dimauro   +3 more
doaj   +1 more source

The SRG/eROSITA All-Sky Survey

Astronomy & Astrophysics
We selected galaxy cluster candidates from the high-redshift (BEST_Z > 0.9) end of the first SRG (Spectrum Roentgen Gamma)/eROSITA All-Sky Survey (eRASS1) galaxy cluster catalogue, for which we obtained moderately deep J-band imaging data with the ...
Zimmermann N., Kluge M., Grandis S., Schrabback T., Balzer F., Bulbul E., Comparat J., Csizi B., Ghirardini V., Jansen H., Kleinebreil F., Liu A., Merloni A., Ramos-Ceja M. E., Sanders J., Zhang X., Aschenbrenner P., Enescu F., Keiler S., Märk M., Rinner M., Schweitzer P., Silvestre-Rosello E., Stepman L.   +23 more
doaj   +1 more source