Deep Hyper Suprime-Cam Images and a Forced Photometry Catalog in W-CDF-S

Abstract

The Wide Chandra Deep Field-South (W-CDF-S) field is one of the SERVS fields with extensive multiwavelength datasets, which can provide insights into the nature and properties of objects in this field. However, the public optical data from DES ($grizy$ to $m\rm_{AB} \approx 21.4-24.3$) are not sufficiently deep to match well the NIR data from VIDEO ($ZYJHK_s$ to $m\rm_{AB} \approx 23.5-25.7$), which limits the investigation of fainter objects at higher redshifts. Here, we present an optical catalog of $\approx$ 2,000,000 objects in W-CDF-S utilizing archival Hyper Suprime-Cam observations in the $g,r,i,z$ bands covering $\approx5.7 \rm~deg^2$. The estimated depth is $\approx$ 25.9 for $g$-band, 25.6 for $r$-band, 25.8 for $i$-band, and 25.2 for $z$-band, which is deep enough to complement the NIR data, and will benefit AGN/galaxy studies in W-CDF-S in the future.