Results 11 to 20 of about 64,304 (283)

Cosmology with photometric redshift surveys [PDF]

Monthly Notices of the Royal Astronomical Society, 2005
We explore the utility of future photometric redshift imaging surveys for delineating the large-scale structure of the Universe, and assess the resulting constraints on the cosmological model. We perform the following two complementary types of analysis.
Blake, C., Bridle, S.
core   +7 more sources

The 2dF Galaxy Redshift Survey: spectra and redshifts [PDF]

Monthly Notices of the Royal Astronomical Society, 2001
The 2dF Galaxy Redshift Survey (2dFGRS) is designed to measure redshifts for approximately 250 000 galaxies. This paper describes the survey design, the spectroscopic observations, the redshift measurements and the survey data base. The 2dFGRS uses the 2dF multifibre spectrograph on the Anglo-Australian Telescope, which is capable of observing 400 ...
Colless, Matthew, Dalton, Gavin, Maddox, Steve, Sutherland, Will, Norberg, Peder, Cole, Shaun, Bland-Hawthorn, Joss, Bridges, Terry, Cannon, Russell, Collins, Chris, Couch, Warrick, Cross, Nicholas, Deeley, Kathryn, De Propris, Roberto, Driver, Simon P., Efstathiou, George, Ellis, Richard S., Frenk, Carlos S., Glazebrook, Karl, Jackson, Carole, Lahav, Ofer, Lewis, Ian, Lumsden, Stuart, Madgwick, Darren, Peacock, John A., Peterson, Bruce A., Price, Ian, Seaborne, Mark, Taylor, Keith, 2dFGRS Team   +29 more
openaire   +3 more sources

Redshift Survey of 12 Moderate-redshift Clusters

Research Notes of the AAS, 2022
Abstract We conducted a redshift survey of 12 X-ray selected clusters in the redshift range z = 0.35–0.50 with MMT/Hectospec. The redshift surveys confirm that these clusters are massive systems. There are no massive groups or clusters projected along the line of sight that might contaminate the observed cluster X-ray properties ...
Kenneth J. Rines, Margaret J. Geller
openaire   +1 more source

Forward Modeling of Galaxy Populations for Cosmological Redshift Distribution Inference

The Astrophysical Journal Supplement Series, 2023
We present a forward-modeling framework for estimating galaxy redshift distributions from photometric surveys. Our forward model is composed of: a detailed population model describing the intrinsic distribution of the physical characteristics of galaxies,
Justin Alsing, Hiranya Peiris, Daniel Mortlock, Joel Leja, Boris Leistedt   +4 more
doaj   +1 more source

A Southern Photometric Quasar Catalog from the Dark Energy Survey Data Release 2

The Astrophysical Journal Supplement Series, 2022
We present a catalog of 1.4 million photometrically selected quasar candidates in the southern hemisphere over the ∼5000 deg ^2 Dark Energy Survey (DES) wide survey area. We combine optical photometry from the DES second data release (DR2) with available
Qian Yang, Yue Shen
doaj   +1 more source

The Spectroscopic Data Processing Pipeline for the Dark Energy Spectroscopic Instrument

The Astronomical Journal, 2023
We describe the spectroscopic data processing pipeline of the Dark Energy Spectroscopic Instrument (DESI), which is conducting a redshift survey of about 40 million galaxies and quasars using a purpose-built instrument on the 4 m Mayall Telescope at Kitt
J. Guy, S. Bailey, A. Kremin, Shadab Alam, D. M. Alexander, C. Allende Prieto, S. BenZvi, A. S. Bolton, D. Brooks, E. Chaussidon, A. P. Cooper, K. Dawson, A. de la Macorra, A. Dey, Biprateep Dey, G. Dhungana, D. J. Eisenstein, A. Font-Ribera, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A Gontcho, D. Green, K. Honscheid, M. Ishak, R. Kehoe, D. Kirkby, T. Kisner, Sergey E. Koposov, Ting-Wen Lan, M. Landriau, L. Le Guillou, Michael E. Levi, C. Magneville, Christopher J. Manser, P. Martini, Aaron M. Meisner, R. Miquel, J. Moustakas, Adam D. Myers, Jeffrey A. Newman, Jundan Nie, N. Palanque-Delabrouille, W. J. Percival, C. Poppett, F. Prada, A. Raichoor, C. Ravoux, A. J. Ross, E. F. Schlafly, D. Schlegel, M. Schubnell, Ray M. Sharples, Gregory Tarlé, B. A. Weaver, Christophe Yéche, Rongpu Zhou, Zhimin Zhou, H. Zou   +57 more
doaj   +1 more source

The influence of wavelength, flux, and lensing selection effects on the redshift distribution of dusty, star-forming galaxies [PDF]

, 2015
We interpret the large variety of redshift distributions of galaxies found by far-infrared and (sub-)millimeter deep surveys depending on their depth and wavelength using the Bethermin et al. (2012) phenomenological model of galaxy evolution.
Benson, Berta, Blain, Béthermin, Béthermin, Béthermin, Béthermin, Carlos De Breuck, Casey, Chapman, Drouart, Emanuele Daddi, Geach, Hezaveh, Hezaveh, Ilbert, Madau, Magdis, Mark Sargent, Matthieu Béthermin, Michałowski, Planck Collaboration Int. VII, Sargent, Sargent, Schreiber, Simpson, Simpson, Smail, Smolcic, Staguhn, Vieira, Vieira, Wardlow, Weiß, Yun, Zavala   +35 more
core   +12 more sources

Survey Operations for the Dark Energy Spectroscopic Instrument

The Astronomical Journal, 2023
The Dark Energy Spectroscopic Instrument (DESI) survey is a spectroscopic survey of tens of millions of galaxies at 0 < z < 3.5 covering 14,000 sq. deg. of the sky.
Edward F. Schlafly, David Kirkby, David J. Schlegel, Adam D. Myers, Anand Raichoor, Kyle Dawson, Jessica Aguilar, Carlos Allende Prieto, Stephen Bailey, Segev BenZvi, Jose Bermejo-Climent, David Brooks, Axel de la Macorra, Arjun Dey, Peter Doel, Kevin Fanning, Andreu Font-Ribera, Jaime E. Forero-Romero, Juan García-Bellido, Satya Gontcho A Gontcho, Julien Guy, ChangHoon Hahn, Klaus Honscheid, Mustapha Ishak, Stéphanie Juneau, Robert Kehoe, Theodore Kisner, Anthony Kremin, Martin Landriau, Dustin A. Lang, James Lasker, Michael E. Levi, Christophe Magneville, Christopher J. Manser, Paul Martini, Aaron M. Meisner, Ramon Miquel, John Moustakas, Jeffrey A. Newman, Jundan Nie, Nathalie. Palanque-Delabrouille, Will J. Percival, Claire Poppett, Constance Rockosi, Ashley J. Ross, Graziano Rossi, Gregory Tarlé, Benjamin A. Weaver, Christophe Yèche, Rongpu Zhou, DESI Collaboration   +50 more
doaj   +1 more source

The SSA22 H i Tomography Survey (SSA22-HIT). I. Data Set and Compiled Redshift Catalog

The Astronomical Journal, 2023
We conducted a deep spectroscopic survey, named SSA22-HIT, in the SSA22 field with the DEep Imaging MultiObject Spectrograph (DEIMOS) on the Keck telescope, designed to tomographically map high- z H i gas through analysis of Ly α absorption in background
Ken Mawatari, Akio K. Inoue, Toru Yamada, Tomoki Hayashino, J. Xavier Prochaska, Khee-Gan Lee, Nicolas Tejos, Nobunari Kashikawa, Takuya Otsuka, Satoshi Yamanaka, David J. Schlegel, Yuichi Matsuda, Joseph F. Hennawi, Ikuru Iwata, Hideki Umehata, Shiro Mukae, Masami Ouchi, Yuma Sugahara, Yoichi Tamura   +18 more
doaj   +1 more source

Hydra — Centaurus: A Redshift Survey [PDF]

Symposium - International Astronomical Union, 1988
The survey consists of 2 samples : SAMPLE A, 85% complete to B(T) = 14.0 in the region between 10 and 14 Hours in R.A. and between −20 and −50 degrees in DEC., SAMPLE B, complete to B(0) = 14.5 in two regions one between R.A. 13 and 14 hours, DEC between −25 and −33, the other between 11 and 12 hours, DEC from −33 to −27.
G Chincarini, L da Costa, A.P. Fairall, P Pellegrini, G Vettolani, C Willmer   +5 more
openaire   +1 more source