S21B0140

We propose for 3 nights (25 queue hrs) of Subaru/HSC z-band imaging time on the North Ecliptic Pole (NEP) and Chandra Deep Field South (CDF-S) that are the key Euclid Deep, JWST and eROSITA Fields. This program would be a Japanese contribution to the Hawaii Two-0 (H20) survey that is providing HSC imaging of 20 sq. degs to the NEP and CDFS. These two 10 square degs fields are the targets of the largest allocation of Spitzer time ever granted (5300 hours) and will be the targets of ultra-deep 1 −2µ m photometry and spectroscopy by the Euclid mission scheduled to launch in early 2023. The H20 data will permit immediate science investigations at z<7 using the HSC+Spitzer data. The combined HSC+Spitzer imaging data will provide the largest and only cosmologically significant z > 3 galaxies with stellar mass estimates for at least the next decade. These data will allow us to provide the first definitive constraint on the evolution of massive (M/M_sun=>10^10.5) galaxies at 3 < z < 7 and estimate the properties of their dark matter haloes through clustering measurements. We also aim to discover high redshift supernovae (z>3) close to the reionization epoch and plan to follow them with JWST.

This document was translated from L^AT_EX by H^EV^EA.