Galaxy build-up in the first 1.5 Gyr of cosmic history: insights from the stellar mass function at z ~ 4–9 from JWST NIRCam observations

A Weibel, PA Oesch, L Barrufet… - Monthly Notices of …, 2024 - academic.oup.com
Combining the public JWST/NIRCam imaging programs CEERS, PRIMER, and JADES,
spanning a total area of, we obtain a sample of 30 000 galaxies at that allows us to perform …

The star-forming and ionizing properties of dwarf z ~ 6–9 galaxies in JADES: insights on bursty star formation and ionized bubble growth

R Endsley, DP Stark, L Whitler… - Monthly Notices of …, 2024 - academic.oup.com
Reionization is thought to be driven by faint star-forming galaxies, but characterizing this
population has long remained very challenging. Here, we utilize deep nine-band JADES …

Cosmic Reionization in the JWST Era: Back to AGNs?

P Madau, E Giallongo, A Grazian… - The Astrophysical …, 2024 - iopscience.iop.org
Deep surveys with the James Webb Space Telescope (JWST) have revealed an emergent
population of moderate-luminosity, broad-line active galactic nuclei (AGNs) at 4≲ z≲ 13 …

Reionization after JWST: a photon budget crisis?

JB Muñoz, J Mirocha, J Chisholm… - Monthly Notices of …, 2024 - academic.oup.com
New JWST observations are revealing the first galaxies to be prolific producers of ionizing
photons, which we argue gives rise to a tension between different probes of reionization …

A high black-hole-to-host mass ratio in a lensed AGN in the early Universe

LJ Furtak, I Labbé, A Zitrin, JE Greene, P Dayal… - Nature, 2024 - nature.com
Early JWST observations have uncovered a population of red sources that might represent a
previously overlooked phase of supermassive black hole growth,–. One of the most …

Size matters: are we witnessing super-Eddington accretion in high-redshift black holes from JWST?

A Lupi, A Trinca, M Volonteri, M Dotti… - Astronomy & …, 2024 - aanda.org
Observations by the James Webb Space Telescope of the Universe at z≳ 4 have shown that
massive black holes (MBHs) appear to be extremely overmassive compared to the local …

Metal-poor star formation at z > 6 with JWST: new insight into hard radiation fields and nitrogen enrichment on 20 pc scales

MW Top**, DP Stark, P Senchyna… - Monthly Notices of …, 2024 - academic.oup.com
Nearly a decade ago, we began to see indications that reionization-era galaxies power hard
radiation fields rarely seen at lower redshift. Most striking were detections of nebular C iv …

Between the Extremes: A JWST Spectroscopic Benchmark for High-redshift Galaxies Using∼ 500 Confirmed Sources at z≥ 5

G Roberts-Borsani, T Treu, A Shapley… - The Astrophysical …, 2024 - iopscience.iop.org
The exceptional spectra of the most luminous z> 10 sources observed so far have
challenged our understanding of early galaxy evolution, requiring a new observational …

The Redshift Evolution of the M•–M⋆ Relation for JWST's Supermassive Black Holes at z> 4

F Pacucci, A Loeb - The Astrophysical Journal, 2024 - iopscience.iop.org
JWST has detected many overmassive galactic systems at z> 4, where the mass of the black
hole, M•, is 10–100 times larger than expected from local relations, given the host's stellar …

GA-NIFS: an extremely nitrogen-loud and chemically stratified galaxy at z ~ 5.55

X Ji, H Übler, R Maiolino, F d'Eugenio… - Monthly Notices of …, 2024 - academic.oup.com
We report the chemical abundance pattern of GS_3073, a galaxy hosting an overmassive
active black hole at, by leveraging observations from JWST/NIRSpec and Very Large …