The ionizing photon escape fraction [Lyman continuum (LyC) f esc] of star-forming galaxies
is the single greatest unknown in the reionization budget. Stochastic sightline effects prohibit …

We infer the properties of massive star populations using the far-ultraviolet stellar continua of
61 star-forming galaxies: 42 at low redshift observed with the Hubble Space Telescope and …

Context. Very massive stars (VMS) have masses in excess of 100 M⊙ and are rare.
However, owing to their powerful winds, very high luminosity, and efficient nucleosynthesis …

We report the discovery of J0121+ 0025, an extremely luminous and young star-forming
galaxy (M UV=− 24.11, log [) at z= 3.244 showing copious Lyman continuum (LyC) leakage …

We report the identification of very massive stars (VMS; mass> 100 M⊙) that may be
segregated in the center of the young massive star cluster at z= 2.37 hosted in the lensed …

Stars stripped of their envelopes from interaction with a binary companion emit a significant
fraction of their radiation as ionizing photons. They are potentially important stellar sources …

Super star cluster (SSC) A1 () in NGC 3125 has one of the strongest (Å) broad (km s− 1) He
ii λ1640 emission lines in the nearby universe and constitutes an important template for …

Extreme, young stellar populations are considered to be the primary contributor to cosmic
reionization. How the Lyman continuum (LyC) escapes these galaxies remains highly …

Mrk 71 is a low-metallicity (Z= 0.16 Z☉) starburst region in the local dwarf galaxy NGC 2366,
hosting two super star clusters (SSCs A and B), and it is recognized as a Green Pea (GP) …

As deep spectroscopic campaigns extend to higher redshifts and lower stellar masses, the
interpretation of galaxy spectra depends increasingly upon models for very young stellar …