Results 41 to 50 of about 572 (187)
The $K$-band luminosity functions of galaxies in high-redshift clusters [PDF]
Proceedings of the International Astronomical Union, 2004 3 pages, to appear in Proceedings of IAU Colloquium 195 - Outskirts of Galaxy Clusters: intense life in the ...
Ellis, S. C., Jones, L. R.
openaire +2 more sources
A Closer Look at the Dynamical State of the High-redshift Galaxy Cluster SPT-CL J2215-3537
The Astrophysical JournalWe present a comprehensive reanalysis of the dynamical state of the high-redshift galaxy cluster SPT-CL J2215-3537 ( z = 1.16), using the full set of available Chandra observations to characterize the thermodynamic and morphological properties of the ...
Vinicius S. Bessa +2 more
doaj +1 more source
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
A Study of Nine High-Redshift Clusters of Galaxies. I. The Survey [PDF]
The Astronomical Journal, 1998 Accepted for publication in the Astronomical Journal.
Oke, J. B., Postman, Marc, Lubin, Lori
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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
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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
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
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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
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, Guinevere +3 more
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ChemPhysChem, Volume 26, Issue 18, September 19, 2025.In bulk carbonic acid (e.g., in interstellar icy dust grains) cluster formation produces two distinct UV‐Vis spectral features redshifted by ≈2 eV (25 nm) and by ≈5 eV (80 nm) compared to gas phase single molecule carbonic acid 's adiabatic ionization energy. Theory and experiment were used to investigate the origin of these shifts.
Dennis F. Dinu +7 more
wiley +1 more source