85 citations · 411 across the 35 of their papers we have counts for
7 papers · 1 filter
Nebular dominated galaxies: insights into the stellar initial mass function at high redshift
Alex J. Cameron, Harley Katz, Callum Witten +3
We identify a low-metallicity () Ly-emitting galaxy at with evidence of a strong Balmer jump, arising from nebular continuum. While Balm…
Low-mass bursty galaxies in JADES efficiently produce ionising photons and could represent the main drivers of reionisation
C. Simmonds, S. Tacchella, K. Hainline +21
We study galaxies in JADES Deep to study the evolution of the ionising photon production efficiency, , observed to increase with redshift. We estimate …
GN-z11: The environment of an AGN at 10.603
Jan Scholtz, Callum Witten, Nicolas Laporte +23
Recent observations with the \textit{James Webb} Space Telescope (JWST) have further refined the spectroscopic redshift of GN-z11, one of the most distant galaxies identified with…
JWST-JADES. Possible Population III signatures at z=10.6 in the halo of GN-z11
Roberto Maiolino, Hannah Uebler, Michele Perna +32
Finding the first generation of stars formed out of pristine gas in the early Universe, known as Population III (PopIII) stars, is one of the most important goals of modern astroph…
The growth of the gargantuan black holes powering high-redshift quasars and their impact on the formation of early galaxies and protoclusters
Jake S. Bennett, Debora Sijacki, Tiago Costa +2
High-redshift quasars (), powered by black holes (BHs) with large inferred masses, imply rapid BH growth in the early Universe. The most extreme examples have inferred m…
Deciphering Lyman- Emission Deep into the Epoch of Reionisation
Callum Witten, Nicolas Laporte, Sergio Martin-Alvarez +18
During the epoch of reionisation the first galaxies were enshrouded in pristine neutral gas, with one of the brightest emission lines in star-forming galaxies, Lyman- (Ly), e…
Evidence for a low Lyman Continuum Escape fraction in three Massive, UV-bright galaxies at z > 7
Callum Witten, Nicolas Laporte, Harley Katz
Although low-mass star-forming galaxies are the leading candidates of the reionisation process, we cannot conclusively rule out high-mass star-forming galaxies as candidates. While…