Search for Optically Dark Infrared Galaxies without Counterparts of Subaru Hyper Suprime-Cam in the AKARI North Ecliptic Pole Wide Survey Field
Yoshiki Toba,Yoshiki Toba,Yoshiki Toba,Tomotsugu Goto,Nagisa Oi,Ting Wen Wang,Seong Jin Kim,Simon C. C. Ho,Denis Burgarella,Tetsuya Hashimoto,Bau-Ching Hsieh,Ting Chi Huang,Ho Seong Hwang,Hiroyuki Ikeda,Helen K. Kim,Seongjae Kim,Dongseob Lee,Matthew A. Malkan,Hideo Matsuhara,Takamitsu Miyaji,Takamitsu Miyaji,Rieko Momose,Youichi Ohyama,Shinki Oyabu,Chris Pearson,Chris Pearson,Daryl Joe D. Santos,Hyunjin Shim,Toshinobu Takagi,Yoshihiro Ueda,Yousuke Utsumi,Takehiko Wada +31 more
TLDR
In this article, the physical properties of AKARI sources without optical counterparts in optical images from the Hyper Suprime-Cam (HSC) on the Subaru telescope were investigated.Abstract:
We present the physical properties of AKARI sources without optical counterparts in optical images from the Hyper Suprime-Cam (HSC) on the Subaru telescope. Using the AKARI infrared (IR) source catalog and HSC optical catalog, we select 583 objects that do not have HSC counterparts in the AKARI North Ecliptic Pole wide survey field (~5 deg2). Because the HSC limiting magnitude is deep (gAB ~ 28.6), these are good candidates for extremely red star-forming galaxies (SFGs) and/or active galactic nuclei (AGNs), possibly at high redshifts. We compile multiwavelength data out to 500 μm and use them for fitting the spectral energy distribution with CIGALE to investigate the physical properties of AKARI galaxies without optical counterparts. We also compare their physical quantities with AKARI mid-IR selected galaxies with HSC counterparts. The estimated redshifts of AKARI objects without HSC counterparts range up to z ~ 4, significantly higher than for AKARI objects with HSC counterparts. We find that (i) 3.6 – 4.5 μm color, (ii) AGN luminosity, (iii) stellar mass, (iv) star formation rate, and (v) V-band dust attenuation in the interstellar medium of AKARI objects without HSC counterparts are systematically larger than those of AKARI objects with counterparts. These results suggest that our sample includes luminous, heavily dust-obscured SFGs/AGNs at z ~ 1–4 that are missed by previous optical surveys, providing very interesting targets for the coming era of the James Webb Space Telescope.read more
Citations
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Journal ArticleDOI
Star Formation and Dust Attenuation Properties in Galaxies from a Statistical UV-to-FIR Analysis
TL;DR: In this paper, the spectral energy distributions (SEDs) from the far UV (FUV) to the FIR (FIR) are used to compare the observed SED to modelled SEDs with several star formation histories (SFHs; decaying star formation rate plus burst) and attenuation laws (power law + 2175 Angstrom bump).
Impact of star formation history on the measurement of star formation rates: do we have to reassess the cosmic star formation rate?
TL;DR: In this paper, the authors investigate the impact of a variable star formation history on the measurement of the SFR of galaxies and find that the discrepancies between the true and estimated SFR may explain at least part of the tension between the integral of the star formation rate density and the stellar mass density at a given redshift.
Journal ArticleDOI
Accurate dust temperature determination in a z = 7.13 galaxy
T. Bakx,Laura Sommovigo,Stefano Carniani,Andrea Ferrara,Hollis B. Akins,Seiji Fujimoto,Masato Hagimoto,Kirsten Kraiberg Knudsen,Andrea Pallottini,Yoichi Tamura,Darach Watson +10 more
TL;DR: In this paper, the authors used ALMA Band 9 continuum observations of the normal, dusty star-forming galaxy A1689-zD1 at z = 7.13, resulting in a ∼4.6 σ detection at 702 GHz.
Journal ArticleDOI
How Does the Polar Dust Affect the Correlation between Dust Covering Factor and Eddington Ratio in Type 1 Quasars Selected from the Sloan Digital Sky Survey Data Release 16
Yoshiki Toba,Yoshihiro Ueda,Poshak Gandhi,Claudio Ricci,Denis Burgarella,Veronique Buat,Tohru Nagao,Shinki Oyabu,Hideo Matsuhara,Bau-Ching Hsieh +9 more
TL;DR: In this paper, the dependence of covering factor (CF) of dust torus on physical properties of active galactic nuclei (AGNs) by taking into account an AGN polar dust emission was revisited.
Journal ArticleDOI
Infrared luminosity functions based on 18 mid-infrared bands: revealing cosmic star formation history with AKARI and Hyper Suprime-Cam
Tomotsugu Goto,Nagisa Oi,Yousuke Utsumi,Rieko Momose,Rieko Momose,Hideo Matsuhara,Tetsuya Hashimoto,Yoshiki Toba,Youichi Ohyama,Toshinobu Takagi,Chia-Ying Chiang,Seong Jin Kim,Ece Kilerci Eser,Matthew A. Malkan,Helen K. Kim,Takamitsu Miyaji,Myungshin Im,Takao Nakagawa,Woong-Seob Jeong,Woong-Seob Jeong,Chris Pearson,Chris Pearson,Laia Barrufet,Chris Sedgwick,Denis Burgarella,Veronique Buat,Hiroyuki Ikeda +26 more
TL;DR: In this paper, the authors performed a census of dust-obscured CSFH in the entire AKARI NEP field in 5 broad bands and estimated total infrared LFs at 0.35$ <$z$<$2.2.
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