5 papers
Cosmic Threads: Interlinking the Stellar Initial Mass Function from Star-Birth to Galaxies
Tereza Jerabkova, Donatella Romano, Pavel Kroupa +19
The stellar initial mass function (sIMF) describes the distribution of stellar masses formed in a single star formation event in a molecular cloud clump. It is fundamental to astro…
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…
Temporarily quiescent galaxies at cosmic dawn: probing bursty star formation
Viola Gelli, Andrea Pallottini, Stefania Salvadori +4
The bursty, time-variable nature of star formation in the first billion years, as revealed by JWST, drives phases of temporary quiescence in low-mass galaxies that quench after sta…
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…
Metallicity distributions of halo stars: do they trace the Galactic accretion history?
Alice Mori, Paola Di Matteo, Stefania Salvadori +3
The standard cosmological scenario predicts a hierarchical formation for galaxies. Many substructures were found in the Galactic halo, identified as clumps in kinematic spaces, lik…