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

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 and Takagi, Toshinobu (2021). 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. Monthly Notices of the Royal Astronomical Society, 500(3) pp. 4078–4094.



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.

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  • Item ORO ID
  • 74166
  • Item Type
  • Journal Item
  • ISSN
  • 1365-2966
  • Keywords
  • catalogues; galaxies: evolution; cosmology: observations; infrared: galaxies
  • Academic Unit or School
  • Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
    Faculty of Science, Technology, Engineering and Mathematics (STEM)
  • Copyright Holders
  • © 2020 Seong Jin Kim, © 2020 Nagisa Oi, © 2020 Tomotsugu Goto, © 2020 Hiroyuki Ikeda, © 2020 Simon C.-C. Ho, © 2020 Hyunjin Shim, © 2020 Yoshiki Toba, © 2020 Ho Seong Hwang, © 2020 Tetsuya Hashimoto, © 2020 Laia Barrufet, © 2020 Matthew Malkan, © 2020 Helen K. Kim, © 2020 Ting-Chi Huang, © 2020 Hideo Matsuhara, © 2020 Takamitsu Miyaji, © 2020 Chris Pearson, © 2020 Stephen Serjeant, © 2020 Daryl Joe D. Santos, © 2020 Eunbin Kim, © 2020 Agnieszka Pollo, © 2020 Woong-Seob Jeong, © 2020 Ting-Wen Wang, © 2020 Rieko Momose, © 2020 Toshinobu Takagi
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