Papers

Peer-reviewed
Jan 17, 2017

CLUSTERING OF INFRARED-BRIGHT DUST-OBSCURED GALAXIES REVEALED BY THE HYPER SUPRIME-CAM ANDWISE

The Astrophysical Journal
  • Yoshiki Toba
  • Tohru Nagao
  • Masaru Kajisawa
  • Taira Oogi
  • Masayuki Akiyama
  • Hiroyuki Ikeda
  • Jean Coupon
  • Michael A. Strauss
  • Wei-Hao Wang
  • Masayuki Tanaka
  • Mana Niida
  • Masatoshi Imanishi
  • Chien-Hsiu Lee
  • Hideo Matsuhara
  • Yoshiki Matsuoka
  • Masafusa Onoue
  • Yuichi Terashima
  • Yoshihiro Ueda
  • Yuichi Harikane
  • Yutaka Komiyama
  • Satoshi Miyazaki
  • Akatoki Noboriguchi
  • Tomonori Usuda
  • Display all

Volume
835
Number
1
First page
36
Last page
36
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.3847/1538-4357/835/1/36
Publisher
American Astronomical Society

We present measurements of the clustering properties of a sample of infrared (IR) bright dust-obscured galaxies (DOGs). Combining 125 deg(2) of wide and deep optical images obtained with the Hyper Suprime-Cam on the Subaru Telescope and all-sky mid-IR images taken with Wide-Field Infrared Survey Explorer, we have discovered 4367 IR-bright DOGs with (i - [22])(AB) > 7.0 and flux density at 22 mu m > 1.0 mJy. We calculate the angular autocorrelation function (ACF) for a uniform subsample of 1411 DOGs with 3.0 mJy < flux (22 mu m) < 5.0 mJy and i(AB) < 24.0. The ACF of our DOG subsample is well-fit with a single power law, w(theta) = (0.010 +/- 0.003)theta(-0.9), where theta is in degrees. The correlation amplitude of IR-bright DOGs is larger than that of IR-faint DOGs, which reflects a flux dependence of the DOG clustering, as suggested by Brodwin et al. We assume that the redshift distribution for our DOG sample is Gaussian, and consider two cases: (1) the redshift distribution is the same as IR-faint DOGs with flux at 22 mu m < 1.0 mJy, mean and sigma z = 1.99 +/- 0.45, and (2) z = 1.19 +/- 0.30, as inferred from their photometric redshifts. The inferred correlation length of IR-bright DOGs is r(0) = 12.0 +/- 2.0 and 10.3 +/- 1.7 h(-1) Mpc, respectively. IR-bright DOGs reside in massive dark matter halos with a mass of log [ M-h /(h(-1) M-circle dot)] = 13.57(-0.55)(+0.50) and 13.65(-0.52)(+0.45) in the two cases, respectively.

Link information
DOI
https://doi.org/10.3847/1538-4357/835/1/36
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000393455400036&DestApp=WOS_CPL
URL
http://stacks.iop.org/0004-637X/835/i=1/a=36/pdf
URL
http://stacks.iop.org/0004-637X/835/i=1/a=36?key=crossref.8bc97fbf94353d8ba653ca76249fa940
ID information
  • DOI : 10.3847/1538-4357/835/1/36
  • ISSN : 0004-637X
  • eISSN : 1538-4357
  • Web of Science ID : WOS:000393455400036

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