6 papers
JWST COSMOS-3D: Spectroscopic Census and Luminosity Function of [O III] Emitters at 6.75<z<9.05 in COSMOS
Romain A. Meyer, Feige Wang, Koki Kakiichi +38
We present a catalogue of spectroscopically selected [OIII]+Hb emitters at 6.75<z<9.05 and the resulting [OIII] 5008 Ã Luminosity Function (LF) in the COSMOS field. We leverage the…
Evidence of violation of Case B recombination in Little Red Dots
G. P. Nikopoulos, D. Watson, A. Sneppen +4
Little Red Dots (LRDs) are a new class of compact extragalactic objects, with a v-shaped optical spectral energy distribution breaking close to the Balmer break wavelength, and bro…
Further Evidence for a Direct-Collapse Origin of the Supermassive Black Hole at the Center of the Infinity Galaxy
Pieter van Dokkum, Gabriel Brammer, Connor Jennings +2
The z=1.14 galaxy consists of two ringed nuclei with an active supermassive black hole (SMBH) in between them. The system is likely the result of a nearly face-on collisio…
The Structure and Formation Histories of Low-Mass Quiescent Galaxies in the Abell 2744 Cluster Environment
Sam E. Cutler, John R. Weaver, Katherine E. Whitaker +21
Low-mass quiescent galaxies are thought to predominantly reside in overdense regions, as environmental effects are often invoked to explain their shutdown of star formation. These…
JWST reveals a supernova following a gamma-ray burst at z 7.3
A. J. Levan, B. Schneider, E. Le Floc'h +50
The majority of energetic long-duration gamma-ray bursts (GRBs) are thought to arise from the collapse of massive stars, making them powerful tracers of star formation across cosmi…
The Infinity Galaxy: a Candidate Direct-Collapse Supermassive Black Hole Between Two Massive, Ringed Nuclei
Pieter van Dokkum, Gabriel Brammer, Josephine F. W. Baggen +3
We report the discovery of an unusual z=1.14 object, dubbed the galaxy, in JWST imaging of the COSMOS field. Its rest-frame near-IR light is dominated by two compact nucle…