We present the first constraints on the prevalence of z> 10 galaxies in the Hubble Ultra Deep
Field (HUDF) leveraging new NIRCam observations from JEMS (JWST Extragalactic …

We have derived luminosity functions and set constraints on the UV luminosity and SFR
density from z∼ 17 to z∼ 8, using the three most-studied JWST/NIRCam data sets, the …

Deep space observations of the JWST have revealed that the structure and masses of very
early Universe galaxies at high redshifts (), existing at 0.3 Gyr after the Big Bang, may be as …

Contact. The star formation rate (SFR) in high-redshift galaxies is expected due to competing
physical processes. This stochastic variability might boost the luminosity of galaxies and …

ABSTRACT JWST observations have revealed a population of galaxies bright enough that
potentially challenge standard galaxy formation models in the Λ cold dark matter (ΛCDM) …

Recent discoveries of a significant population of bright galaxies at cosmic dawn $\left
(z\gtrsim 10\right) $ have enabled critical tests of cosmological galaxy formation models. In …

ABSTRACT A substantial number of ultra-high redshift (8≲ z≲ 17) galaxy candidates have
been detected with JWST, posing the question: Are these observational results surprising in …

The James Webb Space Telescope has detected surprisingly luminous early galaxies that
indicate a tension with the Λ cold dark matter. Motivated by scenarios including axion …

Both observations and simulations have shown strong evidence for highly time-variable star
formation in low-mass and/or high-redshift galaxies, which has important observational …

Recent observations with the JWST are yielding tantalizing hints of an early population of
massive, bright galaxies at z> 10, with Atacama Large Millimeter/submillimeter Array (ALMA) …