Results 31 to 40 of about 4,188,611 (364)
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
openaire +4 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 +50 more
doaj +1 more source
The kinematic dipole in galaxy redshift surveys [PDF]
, 2017 In the concordance model of the Universe, the matter distribution—as observed in galaxy number counts or the intensity of line emission (such as the 21cm line of neutral hydrogen) —should have a kinematic dipole due to the Sun's motion relative to the ...
R. Maartens, C. Clarkson, Song Chen
semanticscholar +1 more source
The 2Mass Redshift Survey [PDF]
Highlights of Astronomy, 1998 With the current convergence of determinations of the Hubble Constant (e.g. The Extragalactic Distance Scale, 1997, Livio, Donahue and Panagia, eds.) to values within ±25% rather than a factor of two, and the clear possibility of determining q0 using high redshift supernovae (Garnavich et al.
Thomas H. Jarrett +6 more
openaire +2 more sources
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
doaj +1 more source
Predicting Hα emission-line galaxy counts for future galaxy redshift surveys [PDF]
, 2017 Knowledge of the number density of Hα emitting galaxies is vital for assessing the scientific impact of the Euclid and Wide Field Infrared Survey Telescope (WFIRST) missions. In this work, we present predictions from a galaxy formation model, GALACTICUS,
A. Merson +6 more
semanticscholar +1 more source
SHELS: COMPLETE REDSHIFT SURVEYS OF TWO WIDELY SEPARATED FIELDS [PDF]
, 2016 The Smithsonian Hectospec Lensing Survey (SHELS) is a complete redshift survey covering two well-separated fields (F1 and F2) of the Deep Lens Survey (DLS). Both fields are more than 94% complete to a Galactic extinction corrected R0 = 20.2.
M. Geller +5 more
semanticscholar +1 more source
The FLAIR–DENIS Redshift Survey [PDF]
Publications of the Astronomical Society of Australia, 1997 AbstractThe DEep Near-Infrared Survey of the southern sky (DENIS) will produce an important by-product: a clean, complete view of the local Universe to z ∼ 0·07 for 105 galaxies. We identify the FLAIR multi-fibre system on the UKST as an extremely competitive facility to undertake follow-up spectroscopy for this sample due to the need to cover wide ...
Mamon, G, Parker, QA, Colless, M
openaire +3 more sources
Probing primordial non-Gaussianity with SKA galaxy redshift surveys: a fully relativistic analysis [PDF]
, 2014 The Square Kilometre Array (SKA) will produce spectroscopic surveys of tens to hundreds of millions of neutral hydrogen (H I) galaxies, eventually covering 30 000 deg2 and reaching out to redshift z≳2.
S. Camera, Mário G. Santos, R. Maartens
semanticscholar +1 more source
COMPARING DENSE GALAXY CLUSTER REDSHIFT SURVEYS WITH WEAK-LENSING MAPS [PDF]
, 2014 We use dense redshift surveys of nine galaxy clusters at z ∼ 0.2 to compare the galaxy distribution in each system with the projected matter distribution from weak lensing.
H. Hwang +4 more
semanticscholar +1 more source