Identification of AKARI infrared sources by the Deep HSC Optical Survey: construction of a new band-merged catalogue in the North Ecliptic Pole Wide field. Issue 3 (4th December 2020)

• Record Type: Journal Article
• Authors: Kim, Seong Jin; Oi, Nagisa; Goto, Tomotsugu; Ikeda, Hiroyuki; Ho, Simon C-C; Shim, Hyunjin; Toba, Yoshiki; Hwang, Ho Seong; Hashimoto, Tetsuya; Barrufet, Laia; Malkan, Matthew; Kim, Helen K; Huang, Ting-Chi; Matsuhara, Hideo; Miyaji, Takamitsu; Pearson, Chris; Serjeant, Stephen; Santos, Daryl Joe D; Kim, Eunbin; Pollo, Agnieszka; Jeong, Woong-Seob; Wang, Ting-Wen; Momose, Rieko; Takagi, Toshinobu
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 500:Issue 3(2021)
• Page Start: 4078
• Page End: 4094
• Publication Date: 2020-12-04
• Subjects: catalogues -- galaxies: evolution -- cosmology: observations -- infrared: galaxies; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/staa3359
• Languages: English
• ISSNs: 0035-8711

Abstract

ABSTRACT: The North Ecliptic Pole field is a natural deep-field location for many satellite observations. It has been targeted many times since it was surveyed by the AKARI space telescope with its unique wavelength coverage from the near- to mid-infrared (mid-IR). Many follow-up observations have been carried out, making this field one of the most frequently observed areas with a variety of facilities, accumulating abundant panchromatic data from the X-ray to the radio wavelength range. Recently, a deep optical survey with the Hyper Suprime-Cam (HSC) at the Subaru telescope covered the NEP-Wide (NEPW) field, which enabled us to identify faint sources in the near- and mid-IR bands, and to improve the photometric redshift (photo- z ) estimation. In this work, we present newly identified AKARI sources by the HSC survey, along with multiband photometry for 91 861 AKARI sources observed over the NEPW field. We release a new band-merged catalogue combining various photometric data from the GALEX UV to submillimetre (sub-mm) bands (e.g. Herschel /SPIRE, JCMT/SCUBA-2). About ∼20 000 AKARI sources are newly matched to the HSC data, most of which seem to be faint galaxies in the near- to mid-infrared AKARI bands. This catalogue is motivating a variety of current research, and will be increasingly useful as recently launched ( eROSITA / ART-XC ) and future space missions (such as JWST, Euclid, and SPHEREx ) plan to take deep observations in the NEP field.