Results 61 to 70 of about 16,096,383 (218)
Integral-Field Spectroscopy of High-Redshift Galaxies: Implications for Early Galaxy Evolution [PDF]
, 2006 Several lines of evidence suggest that the most active phase of galaxy evolution, especially in the most massive systems, was largely completed by $z\sim 1$.
Nesvadba, Nicole
core +1 more source
The Astrophysical JournalStudies of galaxy protoclusters yield insights into galaxy cluster formation complementary to those obtained via “archaeological” studies of present-day galaxy clusters.
Pablo Araya-Araya +8 more
doaj +1 more source
Clustering of galaxies in a hierarchical universe -- II. Evolution to high redshift [PDF]
Monthly Notices of the Royal Astronomical Society, 1999 21 pages, Latex, 11 figures included, submitted to MNRAS; figure 11 ...
Kauffmann G. +3 more
openaire +2 more sources
Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
Spectroscopic Confirmation of a Massive Protocluster with Two Substructures at z ≃ 3.1
The Astrophysical JournalWe present the results of a Keck and Northern Extended Millimeter Array spectroscopic survey of 507 galaxies, where we confirm the presence of two massive overdensities at z = 3.090−3.110 and z = 3.133−3.155 in the neighborhood of the GOODS-N, each with ...
Michael J. Nicandro Rosenthal +5 more
doaj +1 more source
Logarithmic and Strong Coupling Models in Weyl‐Type f(Q,T)$f(Q,T)$ Gravity
Annalen der Physik, Volume 538, Issue 1, January 2026.This work explores Weyl‐type f(Q,T) gravity using recent observational datasets — CC, Pantheon+, Union 3.0, and DESI DR2. Through MCMC analysis of logarithmic and strong coupling models, the study reveals a transition from deceleration to acceleration, quintessence‐to‐phantom dynamics, and late‐time consistency with LCDM, offering a geometry‐driven ...
Rahul Bhagat, S. K. Tripathy, B. Mishra
wiley +1 more source
Optical Identifications of High-Redshift Galaxy Clusters from the Planck Sunyaev–Zeldovich Survey [PDF]
, 2018 © 2018, Pleiades Publishing, Inc. We present the results of optical identifications and spectroscopic redshift measurements for galaxy clusters from the second Planck catalogue of Sunyaev–Zeldovich sources (PSZ2) located at high redshifts, z ≈ 0.7−0.9 ...
Sunyaev, R. +31 more
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Adsorption of Helium on Cationic or Anionic Tetracene and Pentacene
Small Structures, Volume 7, Issue 1, January 2026.How does the arrangement of helium atoms that are adsorbed on tetracene or pentacene ions change with increasing coverage? When does the adsorption layer change from 1D to 2D, and to 3D? Is the transition abrupt? Are the helium atoms localized? Is the arrangement the same for cations and anions? What changes as the acene grows in length?
Miriam Kappe +6 more
wiley +1 more source
The Astrophysical JournalWe present an analysis of the number density of galaxies as a function of stellar mass (i.e., the stellar mass function (SMF)) in the COSMOS field at z ∼ 3.3, making a comparison between the SMF in overdense environments and the SMF in the coeval field ...
Ben Forrest +19 more
doaj +1 more source
Weak lensing by high-redshift clusters of galaxies [PDF]
Astronomy & Astrophysics, 2003 We use weak lensing shear measurements of six z>0.5 clusters of galaxies to derive the mean lensing redshift of the background galaxies used to measure the shear.
Clowe, D., Luppino, G., Kaiser, N.
openaire +2 more sources