The WISSH QSOs project IX. Cold gas content and environment of luminous QSOs at z~2.4-4.7

Understand

Sources at the brightest end of QSO luminosity function during the peak epoch of star formation and black hole accretion (z~2-4, i.e.

• Cosmic noon) are privileged sites to study the feeding & feedback cycle of massive galaxies.
• We perform the first systematic study of cold gas properties in the most luminous QSOs, by characterising their host-galaxies and environment.
• We analyse ALMA, NOEMA and JVLA observations of FIR continuum, CO and [CII] emission lines in eight QSOs ($L_{\rm Bol}>3\times10^{47}$ erg/s) from the WISSH sample at z~2.4-4.7.