Results 31 to 40 of about 15,250,094 (223)

Hawaii Two-0: high-redshift galaxy clustering and bias [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We perform an analysis of two-point galaxy clustering and galaxy bias using Subaru Hyper-Suprime Cam (HSC) data taken jointly by the Subaru Strategic Program and the University of Hawaii in the Cosmic Evolution Survey (COSMOS) field over an area of 1.8 sq deg.
Róbert Beck, Conor McPartland, Andrew Repp, David Sanders, István Szapudi   +4 more
openaire   +2 more sources

First results from high redshift quasar searches in VIKING [PDF]

, 2012
This thesis presents the discovery of the first luminous z & 6.5 quasars in the VISTA kilo-degree Infrared Galaxy Survey (VIKING). After some basic quality control, quasar selection is investigated via use of initial data supplementedwith ...
Findlay, Joseph
core   +4 more sources

Tracing the Total Stellar Mass and Star Formation of High-redshift Protoclusters

The Astrophysical Journal, 2023
As the progenitors of present-day galaxy clusters, protoclusters are excellent laboratories to study galaxy evolution. Since existing observations of protoclusters are limited to the detected constituent galaxies at UV and/or infrared wavelengths, the ...
Roxana Popescu, Alexandra Pope, Kyoung-Soo Lee, Stacey Alberts, Yi-Kuan Chiang, Sowon Lee, Mark Brodwin, Jed McKinney, Vandana Ramakrishnan   +8 more
doaj   +1 more source

Spatially resolved spectroscopy of faint star-forming galaxies & their environments in the high redshift universe [PDF]

, 2011
This thesis is concerned with the spectroscopic observations of distant galaxies, 1 < z < 5. The galaxies presented here are intrinsically faint such that their ux is dominated by ordinary star formation rather than galaxy-galaxy merging and/or ...
Hurley, Mairéad
core   +1 more source

Optical signatures of high-redshift galaxy clusters [PDF]

The Astrophysical Journal, 1994
We combine an N-body and gasdynamic simulation of structure formation with an updated population synthesis code to explore the expected optical characteristics of a high-redshift cluster of galaxies. We examine a poor (2 keV) cluster formed in a biased, cold dark matter cosmology and employ simple, but plausible, threshold criteria to convert gas into ...
Evrard, August E., Charlot, S.
openaire   +2 more sources

Galaxy clusters for cosmology [PDF]

, 2019
Using the gas mass fraction fgas measurements obtained on the basis of X-ray data for two samples of hot and dynamically relaxed galaxy clusters: 42 clusters with redshifts in the range of 0:05 < z < 1:1 collected and analysed by Allen et al.
Piórkowska-Kurpas, Aleksandra, Miernik, Sylwia   +1 more
core   +1 more source

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

Neutral hydrogen surveys for high-redshift galaxy clusters and protoclusters [PDF]

Monthly Notices of the Royal Astronomical Society, 2004
We discuss the possibility of performing blind surveys to detect large-scale features of the universe using 21cm emission. Using instruments with approx. 5'-10' resolution currently in the planning stage, it should be possible to detect virialized galaxy clusters at intermediate redshifts using the combined emission from their constituent galaxies, as ...
Battye, RA, Davies, RD, Weller, J
openaire   +4 more sources

THE FAINT END OF THE CLUSTER-GALAXY LUMINOSITY FUNCTION AT HIGH REDSHIFT [PDF]

The Astrophysical Journal, 2012
9 pages, 4 figures, accepted for publication in the Astrophysical ...
Mancone, Conor, Baker, Troy, Gonzalez, Anthony H., Ashby, Matthew L. N., Stanford, Spencer A., Brodwin, Mark, Eisenhardt, Peter R. M., Snyder, Greg, Stern, Daniel, Wright, Edward L.   +9 more
openaire   +2 more sources

Cluster versus Field: Clear Evidence for a Morphology–Density Relation in All Environments at z ∼ 1.6

The Astrophysical Journal
We explore the relationship between galaxy structure, stellar mass, and local galaxy density in three SpARCS clusters at z  ∼ 1.6 and compare with field galaxies from the 3D-HST survey.
Westley Brown, Adam Muzzin, Jasleen Matharu, Gillian Wilson, Julie Nantais, Ben Forrest, Ricardo Demarco, Allison Noble, Tracy Webb   +8 more
doaj   +1 more source