Results 61 to 70 of about 1,030,336 (214)
Precision Modeling of JWST's First Cluster Lens SMACS J0723.3–7327
The Astrophysical Journal, 2023 Exploiting the fundamentally achromatic nature of gravitational lensing, we present a lens model for the massive galaxy cluster SMACS J0723.3−7323 (SMACS J0723; z = 0.388) that significantly improves upon earlier work.
Guillaume Mahler +14 more
doaj +1 more source
Utopia Remembers: The Soviet Past in the Imagined Communist Future
The Russian Review, EarlyView.Abstract After a twenty‐five‐year hiatus, the reappearance of utopian literature in 1957 prompted Soviet literary watchdogs to corral the subgenre into an ideologically‐acceptable mold. A key requirement was for future generations to be depicted as reverently commemorating the past.
Antony Kalashnikov
wiley +1 more source
BRIGHTEST CLUSTER GALAXIES AND CORE GAS DENSITY IN REXCESS CLUSTERS [PDF]
The Astrophysical Journal, 2010 We investigate the relationship between brightest cluster galaxies (BCGs) and their host clusters using a sample of nearby galaxy clusters from the Representative XMM Cluster Structure Survey (REXCESS). The sample was imaged with the Southern Observatory for Astrophysical Research (SOAR) in R band to investigate the mass of the old stellar population ...
Haarsma, D. +9 more
openaire +3 more sources
The Astrophysical JournalTo investigate the environmental effects on the growth of galaxies, we study the size–mass relation across a broad range of environments with a vast sample of approximately 32 million galaxies at z < 0.5 from the DESI Legacy Imaging Surveys.
Zhaobin Chen +3 more
doaj +1 more source
Multi-spin stellar velocity maps of the most massive galaxies
Astronomy & AstrophysicsWe present stellar kinematics of the MUSE Most Massive Galaxies (M3G) Survey, comprising 25 galaxies brighter than −25.7 mag in the Ks band and stellar masses above ≈6 × 1011 M⊙.
Krajnović Davor +5 more
doaj +1 more source
Understanding shape and centroid deviations in 39 strong lensing galaxy clusters in various dynamical states [PDF]
EPJ Web of ConferencesThrough observational tests of strong lensing galaxy clusters, we can test simulation derived structure predictions that follow from Λ Cold Dark Matter (ΛCDM) cosmology.
Gassis Raven +10 more
doaj +1 more source
A New Galaxy Cluster Merger Capable of Probing Dark Matter: A56
The Astrophysical Journal, 2023 We report the discovery of a binary galaxy cluster merger via a search of the redMaPPer optical cluster catalog, with a projected separation of 535 kpc between the brightest cluster galaxies (BCGs).
David Wittman +5 more
doaj +1 more source
A Solar Analog Model for Decrease in Far Ultraviolet Irradiance Under a Grand Minimum
Earth and Space Science, Volume 13, Issue 9, September 2026.Abstract Solar analog field stars having a range of magnetic activity can provide an estimate of solar spectral irradiance (SSI) variability relevant to understanding the Sun's influence on terrestrial climate. This approach is particularly useful for far ultraviolet (FUV) irradiance that cannot be observed from the Earth surface.
D. Lubin, C. Melis, D. Tytler
wiley +1 more source
X-ray emission in the Abell 2597 Brightest Cluster Galaxy
, 2012 0.5-7 keV X-ray surface brightness map of the central brightest cluster galaxy in Abell 2597. The X-ray emission has been smoothed with an adaptive gaussian kernel, and surface brightness isocontours have been overlaid in black. East is left, North is up.
Grant Tremblay (100047)
core +1 more source
JWST NIRCam Observations of the Globular Cluster Population of RXJ 2129.7+0005
The Astrophysical JournalWe present an analysis of the globular cluster (GC) population in the galaxy cluster RXJ 2129.7+0005 ( z = 0.234) based on JWST NIRCam imaging in three filters: F115W, F150W, and F200W.
Kaitlyn E. Keatley, William E. Harris
doaj +1 more source