Hydrogen Lyman-α (Lyα) emission has been one of the major observational probes for the
high-redshift Universe since the first discoveries of high-z Lyα-emitting galaxies in the late …

Galaxy formation is at the heart of our understanding of cosmic evolution. Although there is a
consensus that galaxies emerged from the expanding matter background by gravitational …

Lyα emission from galaxies can be utilized to characterize the ionization state in the
intergalactic medium (IGM). We report our search for Lyα emission at z> 7 using a …

We present UV luminosity functions of dropout galaxies at~– z 6 10 with the complete
Hubble Frontier Fields data. We obtain a catalog of∼ 450 dropout-galaxy candidates (350 …

In the past five years, deep imaging campaigns conducted with the Hubble Space
Telescope (HST) and ground-based observatories have delivered large samples of galaxies …

Faint Lyα emitters become increasingly rarer toward the reionization epoch (z∼ 6–7).
However, observations from a very large (∼ 5 deg 2) Lyα narrow-band survey at z= 6.6 …

We present the SILVERRUSH program strategy and clustering properties investigated
with∼ 2000 Lyα emitters (LAEs) at z= 5.7 and 6.6 found in the early data of the Hyper …

We present the VIMOS Ultra Deep Survey (VUDS), a spectroscopic redshift survey of~ 10
000 very faint galaxies to study the main phase of galaxy assembly in 2< z≃ 6. The survey …

The Epoch of Reionization (EoR) represents a milestone in the evolution of our Universe.
Star-forming galaxies that existed during the EoR likely emitted a significant fraction (~ 5 …

We present the results of our ultra-deep Keck/DEIMOS spectroscopy of z-dropout galaxies in
the Subaru Deep Field and Great Observatories Origins Deep Survey's northern field. For 3 …