Results 41 to 50 of about 89,711 (344)
Probing cosmic voids with emission-line galaxies
Frontiers in Astronomy and Space SciencesIntroductionWe aim to provide forecasts for future line intensity mapping (LIM) observations and galaxy redshift surveys, focusing on the physical properties of low-density region of the cosmic web (voids).
Yuka Yamada +2 more
doaj +1 more source
The Astrophysical Journal, 2023 Euclid and the Roman Space Telescope (Roman) will soon use grism spectroscopy to detect millions of galaxies via their H α and [O iii ] λ 5007 emission. To better constrain the expected galaxy counts from these instruments, we use a vetted sample of 4239
Gautam Nagaraj +4 more
doaj +1 more source
Measuring Galaxy Environments with Deep Redshift Surveys
, 2005 We study the applicability of several galaxy environment measures (n^th-nearest-neighbor distance, counts in an aperture, and Voronoi volume) within deep redshift surveys.
Brian F. Gerke +6 more
core +1 more source
1.4-GHz Luminosity Function of Galaxies from the Las Campanas Redshift Survey
, 1998 A preliminary 1.4 GHz RLF at redshift of about 0.14 is derived from the Las Campanas Redshift Survey (LCRS) and the NVSS radio data. No significant evolution has been found at this redshift in comparison to the 'local' RLF.Comment: 2 pages including 2 ...
Godlowski, W., Machalski, J.
core +1 more source
The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: mock galaxy catalogues for the low-redshift sample [PDF]
, 2014 We present one thousand mock galaxy catalogues for the analysis of the Low Redshift Sample (LOWZ, effective redshift z ~ 10.32) of the Baryon Oscillation Spectroscopic Survey Data Releases 10 and 11.
Brownstein, Joel R. +9 more
core +4 more sources
The Unexplored Redshift Survey [PDF]
Publications of the Astronomical Society of the Pacific, 2001 Redshift surveys remain an important constraint on cosmological parameters and a key to characterizing the nature and evolution of the large‐scale distribution of galaxies. I discuss redshift surveys as a route to exploration of other issues associated with large‐scale structure including the low surface brightness universe and the links between star ...
openaire +2 more sources
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 ...
Adam J. Hawken +13 more
openaire +4 more sources
The TOOT00 redshift survey of radio sources [PDF]
Astronomische Nachrichten, 2006 AbstractWe present first results from the study of the TOOT00 region consisting of 47 radio sources brighter than 100 mJy at 151 MHz. We have 81% spectroscopic redshift completeness. From theK‐zdiagram we deduce that the host galaxies are similar to ∼ 3L* passively evolved elliptical galaxies and thus estimate the redshifts of the 9 sources without a ...
Vardoulaki, E. +6 more
openaire +4 more sources
Testing Weak Lensing Maps With Redshift Surveys: A Subaru Field
, 2012 We use a dense redshift survey in the foreground of the Subaru GTO2deg^2 weak lensing field (centered at $\alpha_{2000}$ = 16$^h04^m44^s$;$\delta_{2000}$ =43^\circ11^{\prime}24^{\prime\prime}$) to assess the completeness and comment on the purity of ...
Adelman-McCarthy +35 more
core +1 more source
ULAS J234311.93-005034.0: A gravitational lens system selected from UKIDSS and SDSS [PDF]
, 2008 We report the discovery of a new gravitational lens system. This object, ULAS J234311.93-005034.0, is the first to be selected by using the new UKIRT Infrared Deep Sky Survey (UKIDSS), together with the Sloan Digital Sky Survey (SDSS).
Eran O. Ofek +8 more
core +3 more sources