GOBAT , R.

We show that the most distant X-ray-detected cluster known to date, Cl J1001 at ${z}_{\mathrm{spec}}=2.506$, hosts a strong overdensity of radio sources. Six of them are individually detected (within $10^{\prime\prime} $) in deep $0\buildrel{\prime\prime}\over{.} 75$ resolution VLA 3 GHz imaging, with ${S}_{3\mathrm{GHz}}\gt 8\,\mu...

Aims: Measurements of the size of dust continuum emission are an important tool for constraining the spatial extent of star formation, and hence the buildup of stellar mass. Compact dust emission has generally been observed at cosmic noon (z ∼ 2 − 3). However, at earlier epochs, toward the end of the reionization (z ∼ 4 − 6), only the sizes of...

We present new improved constraints on the Hubble parameter H(z) in the redshift range 0.15 \textless z \textless 1.1, obtained from the differential spectroscopic evolution of early-type galaxies as a function of redshift. We extract a large sample of early-type galaxies ( 11000) from several spectroscopic surveys, spanning almost 8 billion...