High-z galaxies

NOEMA reveals the true nature of luminous red JWST z>10 galaxy candidates

The first year of JWST has revealed a surprisingly large number of luminous galaxy candidates beyond z>10. While some galaxies are already spectroscopically confirmed, there is mounting evidence that a subsample of the candidates with particularly …

Constraining Galaxy Overdensities around Three z 6.5 Quasars with ALMA and MUSE

We quantify galaxy overdensities around three high-redshift quasars with known [CII] 158 μm companions: PJ231-20 (z = 6.59), PJ308-21 (z = 6.24), and J0305-3150 (z = 6.61). Recent SCUBA2 imaging revealed the presence of 17 submillimeter galaxies …

Double-peaked Lyman-alpha emission at z=6.803: a reionisation-era galaxy self-ionising its local H II bubble

We report the discovery of a double-peaked Lyman-alpha profile in a galaxy at $z=6.803$, A370p z1, in the parallel Frontier Field of Abell 370. The velocity separation between the blue and red peaks of the Lyman-alpha profile ($\Delta …

The role of galaxies and AGN in reionising the IGM - III : IGM-galaxy cross-correlations at $z\sim 6$ from 8 quasar fields with DEIMOS and MUSE

We present improved results of the measurement of the correlation between galaxies and the intergalactic medium (IGM) transmission at the end of reionisation. We have gathered a sample of $13$ spectroscopically confirmed Lyman-break galaxies (LBGs) …