3 papers
astro-ph.GA2026
Intense and extended CIII] emission suggests a strong outflow in JADES-GS-z14-0
Stefano Carniani, Peter Jakobsen, Giacomo Venturi +31
JWST has revealed an overabundance of very bright, blue galaxies at z>10, raising fundamental questions about how star formation and feedback operate at Cosmic Dawn. We present new…
astro-ph.GA2025
Strong nebular HeII emission induced by He ionizing photons escaping through the clumpy winds of massive stars
Arpita Roy, Mark R. Krumholz, Stefania Salvadori +8
The origin of nebular HeII-emission in both local and high-redshift galaxies remains an unsolved problem. Various theories have been proposed to explain it, including HeII-ionizati…
astro-ph.GA2025
Stellar halos tracing the assembly of ultra-faint dwarf galaxies
Lapo Querci, Andrea Pallottini, Lorenzo Branca +1
[Abridged]Ultra-faint dwarfs (UFDs) are expected to be the relics of the earliest galaxies forming in the Universe. Observations show the presence of a stellar halo around them, wh…