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A Panchromatic View of High-Redshift Quasar Host Galaxies
febbraio 6 @ 11:45 - 12:45
While it is now widely accepted that the growth of supermassive black-holes in galaxies is fundamentally linked to the process of galaxy formation, the host galaxies of the most luminous and massive accreting black-holes or quasars are still poorly understood. Quasars out-shine their host galaxies at most wavelengths making these studies difficult, and the space-density of luminous quasars is also such that very wide-field surveys are required to be able to assemble statistical samples. I will present new observations of the host galaxies of a population of heavily reddened, luminous quasars at redshifts of 2-3. Exploiting wide-field optical surveys together with the dust obscuration towards the quasar line-of-sight, we are, for the first time, able to probe the rest-frame UV emission from the star-forming hosts of these high-luminosity quasars. Observations of the quasar host galaxies at sub-millimetre and millimetre wavelengths with SCUBA2, ALMA and the VLA are also revealing complex gas morphologies, diverse interstellar medium properties and evidence for significant over-densities and major-mergers.