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The MUSE 3D view of the Hubble Deep Field South
R. Bacon, J. Brinchmann, J. Richard +35
We observed the Hubble Deep Field South with the new panoramic integral field spectrograph MUSE that we built and just commissioned at the VLT. The data cube resulting from 27 hour…
AGN-driven helium reionization and the incidence of extended HeIII regions at redshift z>3
Michele Compostella, Sebastiano Cantalupo, Cristiano Porciani
We use hydrodynamic simulations post-processed with the radiative-transfer code RADAMESH to assess recent claims that the low HeII opacity observed in z>3 quasar spectra may be inc…
No excess of bright galaxies around the redshift 7.1 quasar ULAS J1120+0641
Chris Simpson, Daniel Mortlock, Stephen Warren +5
We present optical and near-infrared imaging of the field of the z=7.0842 quasar ULAS J112001.48+064124.3 taken with the Hubble Space Telescope. We use these data to search for gal…
A cosmic web filament revealed in Lyman-alpha emission around a luminous high-redshift quasar
Sebastiano Cantalupo, Fabrizio Arrigoni-Battaia, J. Xavier Prochaska +2
Simulations of structure formation in the Universe predict that galaxies are embedded in a "cosmic web", where the majority of baryons reside as rarefied and highly ionized gas. Th…