Results 11 to 20 of about 2,272 (184)
The abundance of lensing protoclusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 Weak gravitational lensing provides a potentially powerful method for the detection of clusters. In addition to cluster candidates, a large number of objects with possibly no optical or X-ray component have been detected in shear-selected samples.
Anson D'Aloisio +54 more
core +2 more sources
Characterising and identifying galaxy protoclusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We study the characteristics of galaxy protoclusters using the latest L-GALAXIES semi-analytic model. Searching for protoclusters on a scale of ∼10 cMpc gives an excellent compromise between the completeness and purity of their galaxy populations, leads ...
Astropy Collaboration +4 more
core +4 more sources
A Giant Protocluster of Galaxies at Redshift 5.7 [PDF]
Nature Astronomy, 2018 Galaxy clusters trace the largest structures of the Universe and provide ideal laboratories for studying galaxy evolution and cosmology. Clusters with extended X-ray emission have been discovered at redshifts up to z ~ 2.5.
Bailey, III, John I. +15 more
core +7 more sources
LCDM predictions for galaxy protoclusters I: the relation between galaxies, protoclusters and quasars at z~6 [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 Motivated by recent observational studies of the environment of z~6 QSOs, we have used the Millennium Run (MR) simulations to construct a very large (~20 deg^2) mock redshift survey of star-forming galaxies at z~6.
Ajiki +102 more
core +5 more sources
Galaxy evolution in protoclusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 14 pages, 9 figures, accepted for publication in ...
Stuart I. Muldrew +2 more
openaire +4 more sources
A Lyman-α protocluster at redshift 6.9 [PDF]
Nature Astronomy, 2021 Protoclusters, the progenitors of the most massive structures in the Universe, have been identified at redshifts of up to 6.6. Besides exploring early structure formation, searching for protoclusters at even higher redshifts is particularly useful to probe the reionization. Here we report the discovery of the protocluster LAGER-z7OD1 at a redshift of 6.
Weida Hu +23 more
openaire +3 more sources
A PROTOCLUSTER ATz= 2.45 [PDF]
The Astrophysical Journal, 2015 submitted to ...
Diener, C. +8 more
openaire +7 more sources
Are Ly α emitters segregated in protoclusters regions? [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT The presence of neutral hydrogen in the interstellar medium (ISM) and intergalactic medium (IGM) induces radiative transfer (RT) effects on $\rm {Ly}\,\alpha$ photons that affect the observability of Lyman alpha emitters (LAEs). We use the galform semi-analytic model of galaxy formation and evolution to analyse how these effects
Tomás Hough +5 more
openaire +6 more sources
Enhancement of AGN in a protocluster at z = 1.6 [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We investigate the prevalence of AGN in the high-redshift protocluster $\rm{Cl}\,0218.3$-$0510$ at $z=1.62$. Using imaging from the Chandra X-ray Telescope, we find a large overdensity of AGN in the protocluster; a factor of $23\pm9$ times the field density of AGN.
Charutha Krishnan +9 more
openaire +5 more sources
The internal structure of protoclusters and the formation of galaxies [PDF]
Symposium - International Astronomical Union, 1978 We give a short review of the general picture and main features of the formation of galaxies and clusters of galaxies on the basis of the adiabatic theory. Detailed discussions of these questions are published in references 1–6. Some related problems of the formation and development of large scale structure in the Universe according to the same theory ...
A. G. Doroshkevich +2 more
openaire +1 more source