Results 11 to 20 of about 8,837 (309)
Cosmology with Redshift Surveys of Radio Sources [PDF]
, 1998 We use the K-z relation for radio galaxies to illustrate why it has proved difficult to obtain definitive cosmological results from studies based entirely on catalogues of the brightest radio sources, e.g. 3C. To improve on this situation we have been undertaking redshift surveys of complete samples drawn from the fainter 6C and 7C radio catalogues. We
Rawlings, S +4 more
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Measuring the Universe with Galaxy Redshift Surveys [PDF]
, 2018 Galaxy redshift surveys are one of the pillars of the current standard cosmological model and remain a key tool in the experimental effort to understand the origin of cosmic acceleration. To this end, the next generation of surveys aim at achieving sub-percent precision in the measurement of the equation of state of dark energy $w(z)$ and the growth ...
L. Guzzo +9 more
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A Redshift Survey of IRAS Galaxies [PDF]
Symposium - International Astronomical Union, 1988 We have completed a redshift survey of approximately 2200 IRAS galaxies, flux limited at 60μ. The survey covers 76% of the sky and has a characteristic depth of ≈ 6000 km s−1, making it ideal for large scale structure studies requiring whole sky coverage.
Michael A. Strauss, Marc Davis
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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 Redshift Distribution of the TOUGH Survey [PDF]
EAS Publications Series, 2013 We present the redshift results from a Very Large Telescope (VLT) program aimed at optimizing the legacy value of the Swift mission: to characterize a homogeneous, X-ray selected, sample of 69 GRB host galaxies. Fifteen new redshifts have been secured, resulting in a 77% (53/69) redshift completion, making the survey the most comprehensive in terms of
Jakobsson, P. +6 more
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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 +57 more
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A new statistic for redshift surveys: the redshift dispersion of galaxies [PDF]
New Astronomy, 1997 LaTex 27 pages, 8 Postscript figures, added one figure and some changes to the ...
Kepner, Jeremy +2 more
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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 +5 more
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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 +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 +18 more
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