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

Seong Jin Kim, Nagisa Oi, Tomotsugu Goto, Hiroyuki Ikeda, Simon C.C. Ho, Hyunjin Shim, Yoshiki Toba, Ho Seong Hwang, Tetsuya Hashimoto, Laia Barrufet, Matthew Malkan, Helen K. Kim, Ting Chi Huang, Hideo Matsuhara, Takamitsu Miyaji, Chris Pearson, Stephen Serjeant, Daryl Joe D. Santos, Eunbin Kim, Agnieszka PolloWoong Seob Jeong, Ting Wen Wang, Rieko Momose, Toshinobu Takagi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

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.

Original languageEnglish
Pages (from-to)4078-4094
Number of pages17
JournalMonthly Notices of the Royal Astronomical Society
Volume500
Issue number3
DOIs
Publication statusPublished - 1 Jan 2021

Keywords

  • Catalogues
  • Cosmology: Observations
  • Galaxies: Evolution
  • Infrared: Galaxies

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