Results 31 to 40 of about 572 (187)

From Clusters to Proto-Clusters: The Infrared Perspective on Environmental Galaxy Evolution

open access: yesUniverse, 2022
Environment is one of the primary drivers of galaxy evolution; via multiple mechanisms, it can control the critical process of transforming galaxies from star forming to quiescent, commonly termed “quenching”. Despite its importance, however, we still do
Stacey Alberts, Allison Noble
doaj   +1 more source

JWST PEARLS. Prime Extragalactic Areas for Reionization and Lensing Science: Project Overview and First Results

open access: yesThe Astronomical Journal, 2022
We give an overview and describe the rationale, methods, and first results from NIRCam images of the JWST “Prime Extragalactic Areas for Reionization and Lensing Science” (PEARLS) project.
Rogier A. Windhorst   +84 more
doaj   +1 more source

The Evolution of Galaxies in and around Clusters at High-Redshift [PDF]

open access: yesPublications of the Astronomical Society of Japan, 2004
Abstract In this paper, we focus on ram-pressure stripping and evaporation of disk galaxies in and around a cluster. We show that the evolution of the disk surface density affects the efficiency of ram-pressure stripping of galaxies at $z\gtrsim 1$.
Fujita, Yutaka, Goto, Tomotsugu
openaire   +2 more sources

Neutral hydrogen surveys for high-redshift galaxy clusters and protoclusters [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2004
We discuss the possibility of performing blind surveys to detect large-scale features of the universe using 21cm emission. Using instruments with approx. 5'-10' resolution currently in the planning stage, it should be possible to detect virialized galaxy clusters at intermediate redshifts using the combined emission from their constituent galaxies, as ...
Battye, RA, Davies, RD, Weller, J
openaire   +4 more sources

THE FAINT END OF THE CLUSTER-GALAXY LUMINOSITY FUNCTION AT HIGH REDSHIFT [PDF]

open access: yesThe Astrophysical Journal, 2012
9 pages, 4 figures, accepted for publication in the Astrophysical ...
Mancone, Conor   +9 more
openaire   +2 more sources

Evidence for a Redshifted Excess in the Intracluster Light Fractions of Merging Clusters at z ∼ 0.8

open access: yesThe Astrophysical Journal Letters
The intracluster light (ICL) fraction is a well-known indicator of the dynamical activity in intermediate-redshift clusters. Merging clusters in the redshift interval 0.18 < z < 0.56 have a distinctive peak in the ICL fractions measured between ∼3800 and
Yolanda Jiménez-Teja   +3 more
doaj   +1 more source

The SRG/eROSITA All-Sky Survey

open access: yesAstronomy & Astrophysics
We selected galaxy cluster candidates from the high-redshift (BEST_Z > 0.9) end of the first SRG (Spectrum Roentgen Gamma)/eROSITA All-Sky Survey (eRASS1) galaxy cluster catalogue, for which we obtained moderately deep J-band imaging data with the ...
Zimmermann N.   +23 more
doaj   +1 more source

Seedless One‐Pot Synthesis of Colloidal InAs Quantum Dots Enabling a High‐Accuracy Photoplethysmography Oximeter

open access: yesAdvanced Science, Volume 13, Issue 38, 9 July 2026.
A real‐time, non‐contact photoplethysmography (PPG) system based on InAs colloidal quantum dots (CQDs) synthesized via a seedless injection synthesis is demonstrated. The measured oxygen saturation shows considerable agreement with commercial PPG devices.
Beom Kwan Kim   +8 more
wiley   +1 more source

Quantifying the Velocity Anisotropy Profile of Galaxy Clusters Using the Uchuu Cosmological Simulation

open access: yesThe Astrophysical Journal
Galaxy clusters are powerful laboratories for studying both cosmic structure formation and galaxy evolution. We present a comprehensive analysis of the velocity anisotropy profile, β ( r ), in galaxy clusters using the Uchuu-UniverseMachine mock galaxy ...
Mohamed H. Abdullah   +6 more
doaj   +1 more source

Slowly Rotating Traversable Wormholes Supported by Radially Varying String‐Fluid Matter: From Regular Geometries to Photon Trajectories

open access: yesAnnalen der Physik, Volume 538, Issue 6, June 2026.
This study examines slowly rotating traversable wormholes supported by string fluids whose properties change with radius. The matter smoothly shifts from a de Sitter‐like core to a string‐dominated exterior, producing a regular, horizon‐free spacetime.
A. Errehymy   +5 more
wiley   +1 more source

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