A MUltiwavelength Study of ELAN Environments (AMUSE²)

We have been undertaking a systematic survey at 850 μm based on sample of four prototypical z ∼ 2 − 3 enormous Ly α nebulae (ELANe) as well their megaparsec-scale (Mpc-scale) environments to study the physical connections between ELANe and coeval dusty submillimeter galaxies (SMGs). By analysing SCUBA-2 data with self-consistent Monte Carlo simulations construct number counts, here, we report overabundance μm-selected sources around all ELANe, by factor 3.6 ± 0.6 (weighted average) compared blank fields. This suggests that excessive are likely be part Mpc-scale environment corroborating co-evolution scenario for SMGs quasars; this is process which may more commonly observed in ELAN If current form underlying count models continues toward fainter end, our results would suggest an excess extragalactic background light 2–10, indication significant fluctuations scales. Finally, assuming associated corresponding environments, estimate SFR densities each field, weighted average ΣSFR = 1200 300 M ⊙ yr −1 Mpc −3 , consistent found vicinity other quasar systems or proto-clusters similar redshifts; addition, it about greater than cosmic mean.