Results 1 to 10 of about 66,413 (243)

Redshift and Shear Calibration: Impact on Cosmic Shear Studies and Survey Design

, 2006
The cosmological interpretation of weak lensing by large-scale structures requires knowledge of the redshift distribution of the source galaxies. Current lensing surveys are often calibrated using external redshift samples which span a significantly ...
Abazajian, Bartelmann, Bernardeau, Brown, Budavári, C. Heymans, Cohen, Davis, Davis, Fernández-Soto, H. Hoekstra, Hammerle, Heymans, Heymans, Hoekstra, Hoekstra, Hoekstra, Hoekstra, Huterer, Ishak, King, King, L. Van Waerbeke, Le Fèvre, M. White, Ma, Massey, Mellier, Miralles, Navarro, Peebles, Refregier, Rhodes, Rhodes, Schneider, Semboloni, Takada, White, Williams, Yan   +39 more
core   +3 more sources

The Intracluster Light Analysis of the Most Evolved Systems of Galaxies: Fossil Groups

The Astrophysical Journal Letters
We present the analysis of the intracluster light (ICL) in three fossil groups, RX J085640.72+055347.36, RX J1136+0713, and RX J1410+4145, at z ∼ 0.1. We used two optical broadband filters, F435W and F606W, observed with the Hubble Space Telescope, and ...
Nícolas O. L. de Oliveira, Yolanda Jiménez-Teja, Renato A. Dupke, Eleazar R. Carrasco, Anton M. Koekemoer, Yuanyuan Su, Jose Manuel Vilchez, Jimmy A. Irwin, Eric D. Miller, Lucas E. Johnson   +9 more
doaj   +1 more source

Redshift Surveys and Cosmology

, 1999
Redshift surveys are one of the prime tools of observational cosmology. Imaging surveys of the whole sky are now available at a wide range of wavelengths, and provide a basis for the new generation of massive redshift surveys currently in progress.
openaire   +2 more sources

DESIVAST: Catalogs of Low-redshift Voids Using Data from the DESI Data Release 1 Bright Galaxy Survey

The Astrophysical Journal
We present three separate void catalogs created using a volume-limited sample of the DESI Data Release 1 Bright Galaxy Survey. We use the algorithms VoidFinder and V ^2 to construct void catalogs out to a redshift of z = 0.24. Excluding voids affected by
Hernan Rincon, Segev Benzvi, Kelly Douglass, Dahlia Veyrat, Jessica Nicole Aguilar, Steven Ahlen, Davide Bianchi, David Brooks, Todd Claybaugh, Shaun Cole, Axel de la Macorra, Peter Doel, Andreu Font-Ribera, Jaime E. Forero-Romero, Enrique Gaztañaga, Satya Gontcho A Gontcho, Gaston Gutierrez, Klaus Honscheid, Cullan Howlett, Stephanie Juneau, Robert Kehoe, Sergey Koposov, Andrew Lambert, Martin Landriau, Laurent Le Guillou, Aaron Meisner, Ramon Miquel, John Moustakas, Gustavo Niz, Will Percival, Francisco Prada, Ignasi Pérez-Ràfols, Graziano Rossi, Eusebio Sanchez, Michael Schubnell, Hee-Jong Seo, David Sprayberry, Gregory Tarlé, Benjamin Alan Weaver, Hu Zou   +39 more
doaj   +1 more source

Accuracy of the Photometric Redshifts of Brightest Cluster Galaxies Identified in the CFHTLS-W1

Journal of Advanced Research in Natural and Applied Sciences
We determine the accuracy of photometric redshifts for the brightest cluster galaxies (BCGs) identified in the W1 field of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS).
Sinan Aliş
doaj   +1 more source

MAPPING THE GALACTIC HALO WITH BLUE HORIZONTAL BRANCH STARS FROM THE TWO-DEGREE FIELD QUASAR REDSHIFT SURVEY [PDF]

, 2010
Roberto De Propris, Craig Harrison, P. J. Mares   +2 more
openalex   +1 more source

Machine Learning–based Photometric Redshifts for Galaxies in the North Ecliptic Pole Wide Field: Catalogs of Spectroscopic and Photometric Redshifts

The Astrophysical Journal Supplement Series
We perform an MMT/Hectospec redshift survey of the North Ecliptic Pole Wide (NEPW) field covering 5.4 deg ^2 and use it to estimate the photometric redshifts for the sources without spectroscopic redshifts. By combining 2572 newly measured redshifts from
Taewan Kim, Jubee Sohn, Ho Seong Hwang, Simon C.-C. Ho, Denis Burgarella, Tomotsugu Goto, Tetsuya Hashimoto, Woong-Seob Jeong, Seong Jin Kim, Matthew A. Malkan, Takamitsu Miyaji, Nagisa Oi, Hyunjin Shim, Hyunmi Song, Narae Hwang, Byeong-Gon Park   +15 more
doaj   +1 more source

SHELS: Testing Weak Lensing Maps with Redshift Surveys

, 2009
Weak lensing surveys are emerging as an important tool for the construction of "mass selected" clusters of galaxies. We evaluate both the efficiency and completeness of a weak lensing selection by combining a dense, complete redshift survey, the ...
Casertano, Daniel G. Fabricant, Ebeling, Edge, Geller, Hamana, Hennawi, Ian P. Dell'Antonio, Khiabanian, Koester, Kubo, Kurtz, Leauthaud, Lin, Margaret J. Geller, Massimo Ramella, Maturi, Michael J. Kurtz, Mink, Miyazaki, Miyazaki, Mobasher, Press, Rines, Rines, Sehgal, Spergel, Taniguchi, Wittman, Wittman, Zwicky   +30 more
core   +1 more source

The Cosmic Ultraviolet Baryon Survey (CUBS). VIII. Group Environment of the Most Luminous Quasars at z ≈ 1

The Astrophysical Journal
We investigate the group-scale environment of 15 luminous quasars (luminosity L _3000 > 10 ^46 erg s ^−1 ) from the Cosmic Ultraviolet Baryon Survey (CUBS) at redshift z ≈ 1.
Jennifer I-Hsiu Li, Sean D. Johnson, Erin Boettcher, Sebastiano Cantalupo, Hsiao-Wen Chen, Mandy C. Chen, David R. DePalma, Zhuoqi (Will) Liu, Nishant Mishra, Patrick Petitjean, Zhijie Qu, Gwen C. Rudie, Joop Schaye, Fakhri S. Zahedy   +13 more
doaj   +1 more source

Beyond the plane-parallel approximation for redshift surveys

, 2018
Redshift space distortions privilege the location of the observer in cosmological redshift surveys, breaking the translational symmetry of the underlying theory.
Castorina, Emanuele, White, Martin
core   +1 more source