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 …

The study of galaxy protoclusters is beginning to fill in unknown details of the important
phase of the assembly of clusters and cluster galaxies. This review describes the current …

Cosmological simulations predict that the Universe contains a network of intergalactic gas
filaments, within which galaxies form and evolve. However, the faintness of any emission …

We report the identification of an extreme protocluster of galaxies in the early universe
whose core (nicknamed Distant Red Core, DRC, because of its very red color in Herschel …

We investigate the observability of cold accretion streams at redshift 3 via Lyα emission and
the feasibility of cold accretion as the main driver of Lyα blobs (LABs). We run cosmological …

We present the MUSE-Wide survey, a blind, 3D spectroscopic survey in the
CANDELS/GOODS-S and CANDELS/COSMOS regions. The final survey will cover 100× 1 …

Using stacks of Lyα images of 2128 Lyα emitters (LAEs) and 24 proto-cluster UV-selected
galaxies (LBGs) at z= 3.1, we examine the surface brightness profiles of Lyα haloes around …

Aims. The primary difficulty in understanding the sources and processes that powered
cosmic reionization is that it is not possible to directly probe the ionizing Lyman-continuum …

We present an unprecedentedly large catalog consisting of 2230≳ L* Lyα emitters (LAEs) at
z= 5.7 and 6.6 on the 13.8 and 21.2 deg2 sky, respectively, that are identified by the …

Galaxy proto-clusters at $ z\gtrsim 2$ provide a direct probe of the rapid mass assembly and
galaxy growth of present-day massive clusters. Because of the need for precise galaxy …