Clustering of dust-obscured galaxies at z ∼ 2

Mark Brodwin, Arjun Dey, Michael J I Brown, Alexandra Pope, Lee Armus, Shane Bussmann, Vandana Desai, Buell Tomasson Jannuzi, Emeric Le Floc'h

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

We present the angular autocorrelation function of 2603 dust-obscured galaxies (DOGs) in the Boötes field of the NOAO Deep Wide-Field Survey. DOGs are red, obscured galaxies, defined as having R - [24] ≥ 14 (F 24/FR ≥ 1000). Spectroscopy indicates that they are located at 1.5 ≲ z ≲ 2.5. We find strong clustering, with r 0 = 7.40-0.84+1.27 h-1 Mpc for the full F24 > 0.3 mJy sample. The clustering and space density of the DOGs are consistent with those of submillimeter galaxies, suggestive of a connection between these populations. We find evidence for luminosity-dependent clustering, with the correlation length increasing to r0 = 12.97-2.64+4.26 h-1 Mpc for brighter (F24 < 0.6 mJy) DOGs. Bright DOGs also reside in richer environments than fainter ones, suggesting these subsamples may not be drawn from the same parent population. The clustering amplitudes imply average halo masses of log M = 12.2-0.2+0.3 M for the full DOG sample, rising to log M = 13.0-0.3+0.4 M for brighter DOGs. In a biased structure formation scenario, the full DOG sample will, on average, evolve into ∼3L, present-day galaxies, whereas the most luminous DOGs may evolve into brightest cluster galaxies.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume687
Issue number2
StatePublished - Nov 10 2008
Externally publishedYes

Fingerprint

dust
galaxies
autocorrelation
field survey
space density
spectroscopy
halos
luminosity

Keywords

  • Evolution-galaxies
  • Formation-galaxies
  • Galaxies
  • High-redshift-galaxies
  • Statistics-large-scale structure of universe

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Brodwin, M., Dey, A., Brown, M. J. I., Pope, A., Armus, L., Bussmann, S., ... Le Floc'h, E. (2008). Clustering of dust-obscured galaxies at z ∼ 2. Astrophysical Journal, 687(2).

Clustering of dust-obscured galaxies at z ∼ 2. / Brodwin, Mark; Dey, Arjun; Brown, Michael J I; Pope, Alexandra; Armus, Lee; Bussmann, Shane; Desai, Vandana; Jannuzi, Buell Tomasson; Le Floc'h, Emeric.

In: Astrophysical Journal, Vol. 687, No. 2, 10.11.2008.

Research output: Contribution to journalArticle

Brodwin, M, Dey, A, Brown, MJI, Pope, A, Armus, L, Bussmann, S, Desai, V, Jannuzi, BT & Le Floc'h, E 2008, 'Clustering of dust-obscured galaxies at z ∼ 2', Astrophysical Journal, vol. 687, no. 2.
Brodwin M, Dey A, Brown MJI, Pope A, Armus L, Bussmann S et al. Clustering of dust-obscured galaxies at z ∼ 2. Astrophysical Journal. 2008 Nov 10;687(2).
Brodwin, Mark ; Dey, Arjun ; Brown, Michael J I ; Pope, Alexandra ; Armus, Lee ; Bussmann, Shane ; Desai, Vandana ; Jannuzi, Buell Tomasson ; Le Floc'h, Emeric. / Clustering of dust-obscured galaxies at z ∼ 2. In: Astrophysical Journal. 2008 ; Vol. 687, No. 2.
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