Results 41 to 50 of about 1,149,467 (210)

Galaxy clustering and dynamics from redshift surveys [PDF]

open access: yes, 1990
The clustering and dynamical properties of the 368 galaxies in the redshift surveys of Metcalfe et al. (1989) and Parker et al. (1986) are investigated. These galaxies were selected from ten high galactic latitude fields complete to a magnitude limit of ...
Hale-Sutton, D, Hale-Sutton, Duncan
core  

The clustering of galaxies in hierarchical galaxy formation models [PDF]

open access: yes, 2010
Galaxy clustering encodes information about the values of cosmological parameters and also about the physical processes behind galaxy formation and evolution. The GALFORM semi-analytical model is the theoretical approach we used to model galaxy formation.
KIM, HAN,SIK, Kim, Han Sik
core  

Validation of the Scientific Program for the Dark Energy Spectroscopic Instrument

open access: yesThe Astronomical Journal
The Dark Energy Spectroscopic Instrument (DESI) was designed to conduct a survey covering 14,000 deg ^2 over 5 yr to constrain the cosmic expansion history through precise measurements of baryon acoustic oscillations (BAO).
DESI Collaboration   +264 more
doaj   +1 more source

Redshift distribution of gamma-ray bursts and star formation rate [PDF]

open access: yes, 2006
Aims. The redshift distribution of gamma-ray bursts collected in the BATSE Catalog is compared with the star formation rate.We aim to clarify the accordance between them. We also study the case of comoving number density of bursts monotonously increasing
Bagoly, Zsolt   +18 more
core   +1 more source

Deep Spectroscopy with DESI for Photometric Redshift Training and Calibration

open access: yesThe Astronomical Journal
Deep spectroscopic samples can improve photometric redshift (photo- z ) estimates and reduce uncertainties on redshift distributions. Such improvements can increase the cosmological constraining power of large imaging-based experiments such as the Vera C.
Biprateep Dey   +64 more
doaj   +1 more source

Topology and geometry of the CfA2 redshift survey [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2000
We analyse the redshift space topology and geometry of the nearby Universe by computing the Minkowski functionals of the Updated Zwicky Catalogue (UZC). The UZC contains the redshifts of almost 20,000 galaxies, is 96% complete to the limiting magnitude m_Zw=15.5 and includes the Center for Astrophysics (CfA) Redshift Survey (CfA2).
Schmalzing J., DIAFERIO, Antonaldo
openaire   +3 more sources

The effect of the environment on the evolution of galaxy colours [PDF]

open access: yes, 2006
In chapter 1 of this thesis, I give a brief overview of the birth of modern cosmology and the growth of the current paradigm. I then go on to describe the different types of galaxies, the star formation rates within them and give some notes about galaxy ...
Davies, Gregory Tudor
core  

Redshift sensitivities of dark energy surveys

open access: yesPhysical Review D, 2006
Great uncertainty surrounds dark energy, both in terms of its physics, and the choice of methods by which the problem should be addressed. Here we quantify the redshift sensitivities offered by different techniques. We focus on the three methods most adept at constraining w, namely supernovae, cosmic shear, and baryon oscillations.
Simpson, Fergus, Bridle, Sarah
openaire   +2 more sources

No periodicities in 2dF Redshift Survey data [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2002
4 pages, 5 figures, MNRAS ...
Hawkins, E.   +2 more
openaire   +2 more sources

Probing the large-scale structure of the universe with future galaxy redshift surveys [PDF]

open access: yes, 1999
Several projects are currently underway to obtain large galaxy redshift surveys over the course of the next decade. The aim of this thesis is to study how well the resultant three-dimensional maps of the galaxy distribution will be able to constrain the ...
Hatton, Stephen John, Hatton, S.J.
core  

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