We present the survey design, implementation, and outlook for COSMOS-Web, a 255 hr
treasury program conducted by the James Webb Space Telescope in its first cycle of …

The study of galaxy protoclusters is beginning to fill in unknown details of the important
phase of the assembly of clusters and cluster galaxies. This review describes the current …

We present a new parametric lens model for the massive galaxy cluster Abell 2744 based
on new ultra-deep JWST imaging taken in the framework of the UNCOVER program. These …

We present Keck–MOSFIRE H and K spectra for a sample of 24 candidate quiescent
galaxies at 3< z< 4, identified from their rest-frame UVJ colors and photometric redshifts in …

Recent observations with the James Webb Space Telescope (JWST) have further refined
the spectroscopic redshift of GN-z11, one of the most distant galaxies identified with the …

We present a catalog of 10,718 objects in the COSMOS field, observed through multi-slit
spectroscopy with the Deep Imaging Multi-Object Spectrograph (DEIMOS) on the Keck II …

Abstract Massive Primordial Black Holes (MPBH) can be formed after inflation due to broad
peaks in the primordial curvature power spectrum that collapse gravitationally during the …

Massive galaxy clusters have been found that date to times as early as three billion years
after the Big Bang, containing stars that formed at even earlier epochs,–. The high-redshift …

Spectroscopic Confirmation of a Protocluster at z = 3.37 with a High Fraction of Quiescent
Galaxies - IOPscience This site uses cookies. By continuing to use this site you agree to our …

We report the identification of an extreme protocluster of galaxies in the early universe
whose core (nicknamed Distant Red Core, DRC, because of its very red color in Herschel …