Results 31 to 40 of about 64,304 (283)

The AAO 2DF QSO Redshift Survey [PDF]

Symposium - International Astronomical Union, 1999
The study of large-scale structure through QSO clustering provides a potentially powerful route to determining the fundamental cosmological parameters of the Universe (see Croom & Shanks 1996). Unfortunately, previous QSO clustering studies have been limited by the relatively small sizes of homogeneous QSO catalogues that have been available ...
Boyle, Smith, R, Shanks, T, Croom, S, Miller, L   +4 more
openaire   +3 more sources

Measuring the cosmological constant with redshift surveys [PDF]

, 1996
It has been proposed that the cosmological constant $\Lambda$ might be measured from geometric effects on large-scale structure. A positive vacuum density leads to correlation-function contours which are squashed in the radial direction when calculated ...
Ballinger, W. E., Heavens, A. F., Peacock, J. A.   +2 more
core   +3 more sources

Compact Group selection From Redshift Surveys [PDF]

The Astronomical Journal, 1996
For the first time, we construct a catalog of compact groups selected from a complete, magnitude-limited redshift survey. We select groups with $N \geq 3$ members based on projected separation and association in redshift space alone. We evaluate the characteristics of the Redshift Survey Compact Groups (RSCG's).
Barton, Elizabeth, Geller, Margaret J., Ramella, Massimo, Marzke, Ronald O., da Costa, L. Nicolaci   +4 more
openaire   +2 more sources

Measuring Redshift-Space Distortions using Photometric Surveys [PDF]

, 2011
We outline how redshift-space distortions (RSD) can be measured from the angular correlation function w({\theta}), of galaxies selected from photometric surveys.
Alcock, Anna Cabré, Ashley J. Ross, Ballinger, Banerji, Blake, Blake, Cabré, Crocce, Crocce, Desjacques, Dodelson, Eisenstein, Enrique Gaztañaga, Fisher, Fosalba, Guzzo, Hamilton, Hamilton, Hawkins, Kaiser, Komatsu, Linder, Martín Crocce, Myers, Newman, Nock, Okumura, Padmanabhan, Peacock, Percival, Phillipps, Pope, Ross, Ross, Ross, Ross, Samushia, Sanchez, Scranton, Simpson, Smith, Song, Tegmark, The Planck Collaboration, Thomas, White, Will J. Percival, York, Zehavi, Zheng   +50 more
core   +2 more sources

THE DEEP2 GALAXY REDSHIFT SURVEY: DESIGN, OBSERVATIONS, DATA REDUCTION, AND REDSHIFTS [PDF]

The Astrophysical Journal Supplement Series, 2013
We describe the design and data sample from the DEEP2 Galaxy Redshift Survey, the densest and largest precision-redshift survey of galaxies at z ~ 1 completed to date. The survey has conducted a comprehensive census of massive galaxies, their properties, environments, and large-scale structure down to absolute magnitude M_B = -20 at z ~ 1 via ~90 ...
Newman, Jeffrey A., Cooper, Michael C., Davis, Marc, Faber, S. M., Coil, Alison L., Guhathakurta, Puragra, Koo, David C., Phillips, Andrew C., Conroy, Charlie, Dutton, Aaron A., Finkbeiner, Douglas P., Gerke, Brian F., Rosario, David J., Weiner, Benjamin J., Willmer, C. N. A., Yan, Renbin, Harker, Justin J., Kassin, Susan A., Konidaris, N. P., Lai, Kamson, Madgwick, Darren S., Noeske, K. G., Wirth, Gregory D., Connolly, A. J., Kaiser, N., Kirby, Evan N., Lemaux, Brian C., Lin, Lihwai, Lotz, Jennifer M., Luppino, G. A., Marinoni, Christian, Matthews, Daniel J., Metevier, Anne, Schiavon, Ricardo P.   +33 more
openaire   +4 more sources

Measuring photometric redshifts for high-redshift radio source surveys

Publications of the Astronomical Society of Australia, 2023
Abstract With the advent of deep, all-sky radio surveys, the need for ancillary data to make the most of the new, high-quality radio data from surveys like the Evolutionary Map of the Universe (EMU), GaLactic and Extragalactic All-sky Murchison Widefield Array survey eXtended, Very Large Array Sky Survey, and LOFAR Two-metre Sky Survey is growing ...
K. J. Luken, R. P. Norris, X. R. Wang, L. A. F. Park, Y. Guo, M. D. Filipović   +5 more
openaire   +3 more sources

The Inverse Redshift-Space Operator: Reconstructing Cosmological Density and Velocity Fields [PDF]

, 1999
We present the linear inverse redshift space operator which maps the galaxy density field derived from redshift surveys from redshift space to real space. Expressions are presented for observers in both the CMBR and Local Group rest frames.
Andy Taylor, Ballinger, Branchini, Croft, Fisher, Hamilton, Heavens, Heavens, Helen Valentine, Kaiser, Kaiser, Nusser, Peacock, Peebles, Peebles, Regös, Rowan-Robinson, Rowan-Robinson, Saunders, Schmoldt, Shaya, Strauss, Szalay, Tadros, Taylor, Taylor, Tegmark, Valentine, Watson, Webster, Yahil, Zaroubi, Zaroubi   +32 more
core   +2 more sources

Correcting for Interloper Contamination in the Power Spectrum with Neural Networks

The Astrophysical Journal
Modern slitless spectroscopic surveys such as Euclid and Roman collect vast numbers of galaxy spectra, but their low signal-to-noise ratios often lead to incorrect redshift assignments when relying on a single emission line.
Marina S. Cagliari, Azadeh Moradinezhad Dizgah, Francisco Villaescusa-Navarro   +2 more
doaj   +1 more source

Peering into the Cosmic Dawn: JWST Cycle 1 Data Reveals Early Galaxy Candidates at Redshifts z > 9.5

Edinburgh Student Journal of Science
Observing high-redshift objects provides a window into the past, enabling insight into galaxy formation, matter distribution, and the nature of dark matter and energy.
Sev Zielinska
doaj   +1 more source

Modelling baryonic feedback for survey cosmology

The Open Journal of Astrophysics, 2019
Observational cosmology in the next decade will rely on probes of the distribution of matter in the redshift range between ...
Elisa Chisari, Alexander J. Mead, Shahab Joudaki, Pedro G. Ferreira, Aurel Schneider, Joseph Mohr, Tilman, David Alonso, Ian G. McCarthy, Sergio Martin-Alvarez, Julien Devriendt, Adrianne Slyz, Marcel P. van Daalen   +12 more
doaj   +1 more source