Results 101 to 110 of about 15,250,094 (223)

Measuring the star formation rate density from CNOC2 [PDF]

, 2006
This thesis charts the evolution of the Universal Star Formation Rate Density (SFRD) across the redshift range 0.2 < z < 0.6, using the 2nd Canadian Network for Observational Cosmology Survey (CN0C2).
Whitaker, Richard James
core  

Bent tail radio sources as tracers of galaxy clusters at high redshift and SMBH mass estimates [PDF]

, 2021
Bent tail radio sources (BTRSs) are radio galaxies which have jets that show a characteristic C‐shape that is believed to be due to ram pressure caused by the motion of the galaxy through the ambient medium.
Mguda, Zolile Martin
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 evolution in overdense environments at high redshift: passive early-type galaxies in a cluster at redshift 2 [PDF]

, 2013
17 pages, 13 figures, ApJ in pressInternational audienceWe present a study of galaxy populations in the central region of the IRAC-selected, X-ray detected galaxy cluster Cl J1449+0856 at z=2.
Cimatti, A., Gobat R., Renzini A., Arimoto, N., Daddi, E., Chary RR, Arimoto N., Finoguenov A, Dickinson, M., Onodera M., Daddi E, Carollo M, Dickinson M., Dickinson M, Finoguenov, A., Strazzullo V., Chary, R. -R., Renzini, A., Finoguenov A., Cimatti A, Renzini A, Daddi E., Gobat, R., Cimatti, Alessandro, Arimoto N, Gobat R, Chary R. R., Carollo, M., Strazzullo V, Onodera M, CIMATTI, ANDREA, Strazzullo, V., Onodera, M., Daddi, Emanuele, Carollo M., Chary, R.-R.   +35 more
core   +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

ComPACT: Mass-redshift properties of the galaxy cluster catalogue

Astronomy & Astrophysics
Context. Machine-learning methods are more and more frequently applied to astronomical surveys, offering powerful tools for detecting and studying galaxy clusters. Aims.
Voskresenskaia S., Lyskova N., Zaznobin I., Meshcheryakov A.   +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

Designing a space-based galaxy redshift survey to probe dark energy [PDF]

, 2010
A space-based galaxy redshift survey would have enormous power in constraining dark energy and testing general relativity, provided that its parameters are suitably optimized.
Cimatti, A., James E. Geach, Geach, J.E., Carbone, Carmelita, Wang Yun, Orsi, A., Samushia, L., Garilli, Bianca, Franzetti, P., Zamorani, Giovanni, Paolo Franzetti, Rosati Piero, Rosati, P., Mukherjee, P., Zamorani Giovanni, Mukherjee Pia, Garilli Bianca, Piero Rosati, Cimatti A, Pia Mukherjee, Wang Y, Lacey Cedric G., Garilli B, Baugh CM, Geach, James E., Percival Will, Mukherjee, Pia, Rosati, Piero, Lacey, C.G., Percival, Will, Carmelita Carbone, Geach James E., Zamorani, G., Lacey, Cedric G., Franzetti, Paolo, Carbone, C., Orsi A, Percival, W., Mukherjee P, Wang, Yun, Wang, Y., Majerotto E, Guzzo L, Baugh, C.M., Samushia, Lado, Franzetti P, Will Percival, Orsi, Alvaro, Baugh, Carlton M., Luigi Guzzo, Guzzo, L., Percival W, Guzzo, Luigi, Samushia L, Samushia Lado, Lado Samushia, Carbone C, Franzetti Paolo, Majerotto, Elisabetta, Cimatti, Andrea, Majerotto Elisabetta, Geach JE, Andrea Cimatti, Alvaro Orsi, Orsi Alvaro, Garilli, B., Baugh Carlton M., Lacey CG, Giovanni Zamorani, Yun Wang, Majerotto, E., Bianca Garilli, Cedric G. Lacey, Guzzo Luigi, Elisabetta Majerotto, Carlton M. Baugh, Zamorani G.   +76 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