HEROES: The Hawaii eROSITA Ecliptic Pole Survey Catalog

Abstract

We present a seven-band ( g , r , i , z , y , NB816, NB921) catalog derived from a Subaru Hyper Suprime-Cam (HSC) imaging survey of the North Ecliptic Pole (NEP). The survey, known as HEROES, consists of 44 deg ^2 of contiguous imaging reaching median 5 σ depths of g : 26.5, r : 26.2, i : 25.7, z : 25.1, y : 23.9, NB816: 24.4, and NB921: 24.4 mag. We reduced these data with the HSC pipeline software hscPipe , and produced a resulting multiband catalog containing over 25 million objects. We provide the catalog in three formats: (1) a collection of hscPipe format forced photometry catalogs, (2) a single combined catalog containing every object in that data set with selected useful columns, and (3) a smaller variation of the combined catalog with only essential columns for basic analysis or low-memory machines. The catalog uses all the available HSC data on the NEP and may serve as the primary optical catalog for current and future NEP deep fields from instruments and observatories such as SCUBA-2, eROSITA, Spitzer, Euclid, and JWST.

Keywords

• Catalogs
• Galaxy counts
• Surveys
• Observational cosmology