Spitzer 70/160 μm observations of high-redshift ULIRGs and HyLIRGs in the Boötes field

Krystal D. Tyler, Emeric Le Floc'H, George H. Rieke, Arjun Dey, Vandana Desai, Kate Brand, Colin Borys, Buell Tomasson Jannuzi, Lee Armus, Herve Dole, Casey Papovich, Michael J I Brown, Myra Blaylock, Sarah J U Higdon, James L. Higdon, Vassilis Charmandaris, Matthew L N Ashby, Howard A. Smith

Research output: Contribution to journalArticle

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Abstract

We present new 70 and 160 μm observations of a sample of extremely red (R-[24] ≳ 15 mag), mid-infrared bright, high-redshift (1.7 ≲ z ≲ 2.8) galaxies. All targets detected in the far-infrared exhibit rising spectral energy distributions (SEDs) consistent with dust emission from obscured active galactic nuclei (AGNs) and/or star-forming regions in luminous IR galaxies (LIRGs). We find that the SEDs of the high-redshift sources are more similar to canonical AGN-dominated local ultraluminous IR galaxies (ULIRGs) with significant warm dust components than to typical local star-forming ULIRGs. The inferred IR (8-1000 μm) bolometric luminosities are found to be L bol 4 × 1012 L to3 × 1013 L (ULIRGs/hyper-luminous IR galaxies (HyLIRGs)), representing the first robust constraints on L bol for this class of object.

Original languageEnglish (US)
Pages (from-to)1846-1853
Number of pages8
JournalAstrophysical Journal
Volume691
Issue number2
DOIs
StatePublished - Feb 1 2009

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galaxies
dust
energy
spectral energy distribution
active galactic nuclei
stars
distribution
luminosity

Keywords

  • dust, extinction
  • galaxies: active
  • galaxies: high-redshift
  • galaxies: photometry
  • galaxies: starburst
  • infrared: galaxies

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Spitzer 70/160 μm observations of high-redshift ULIRGs and HyLIRGs in the Boötes field. / Tyler, Krystal D.; Floc'H, Emeric Le; Rieke, George H.; Dey, Arjun; Desai, Vandana; Brand, Kate; Borys, Colin; Jannuzi, Buell Tomasson; Armus, Lee; Dole, Herve; Papovich, Casey; Brown, Michael J I; Blaylock, Myra; Higdon, Sarah J U; Higdon, James L.; Charmandaris, Vassilis; Ashby, Matthew L N; Smith, Howard A.

In: Astrophysical Journal, Vol. 691, No. 2, 01.02.2009, p. 1846-1853.

Research output: Contribution to journalArticle

Tyler, KD, Floc'H, EL, Rieke, GH, Dey, A, Desai, V, Brand, K, Borys, C, Jannuzi, BT, Armus, L, Dole, H, Papovich, C, Brown, MJI, Blaylock, M, Higdon, SJU, Higdon, JL, Charmandaris, V, Ashby, MLN & Smith, HA 2009, 'Spitzer 70/160 μm observations of high-redshift ULIRGs and HyLIRGs in the Boötes field', Astrophysical Journal, vol. 691, no. 2, pp. 1846-1853. https://doi.org/10.1088/0004-637X/691/2/1846
Tyler, Krystal D. ; Floc'H, Emeric Le ; Rieke, George H. ; Dey, Arjun ; Desai, Vandana ; Brand, Kate ; Borys, Colin ; Jannuzi, Buell Tomasson ; Armus, Lee ; Dole, Herve ; Papovich, Casey ; Brown, Michael J I ; Blaylock, Myra ; Higdon, Sarah J U ; Higdon, James L. ; Charmandaris, Vassilis ; Ashby, Matthew L N ; Smith, Howard A. / Spitzer 70/160 μm observations of high-redshift ULIRGs and HyLIRGs in the Boötes field. In: Astrophysical Journal. 2009 ; Vol. 691, No. 2. pp. 1846-1853.
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AU - Rieke, George H.

AU - Dey, Arjun

AU - Desai, Vandana

AU - Brand, Kate

AU - Borys, Colin

AU - Jannuzi, Buell Tomasson

AU - Armus, Lee

AU - Dole, Herve

AU - Papovich, Casey

AU - Brown, Michael J I

AU - Blaylock, Myra

AU - Higdon, Sarah J U

AU - Higdon, James L.

AU - Charmandaris, Vassilis

AU - Ashby, Matthew L N

AU - Smith, Howard A.

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N2 - We present new 70 and 160 μm observations of a sample of extremely red (R-[24] ≳ 15 mag), mid-infrared bright, high-redshift (1.7 ≲ z ≲ 2.8) galaxies. All targets detected in the far-infrared exhibit rising spectral energy distributions (SEDs) consistent with dust emission from obscured active galactic nuclei (AGNs) and/or star-forming regions in luminous IR galaxies (LIRGs). We find that the SEDs of the high-redshift sources are more similar to canonical AGN-dominated local ultraluminous IR galaxies (ULIRGs) with significant warm dust components than to typical local star-forming ULIRGs. The inferred IR (8-1000 μm) bolometric luminosities are found to be L bol 4 × 1012 L to3 × 1013 L (ULIRGs/hyper-luminous IR galaxies (HyLIRGs)), representing the first robust constraints on L bol for this class of object.

AB - We present new 70 and 160 μm observations of a sample of extremely red (R-[24] ≳ 15 mag), mid-infrared bright, high-redshift (1.7 ≲ z ≲ 2.8) galaxies. All targets detected in the far-infrared exhibit rising spectral energy distributions (SEDs) consistent with dust emission from obscured active galactic nuclei (AGNs) and/or star-forming regions in luminous IR galaxies (LIRGs). We find that the SEDs of the high-redshift sources are more similar to canonical AGN-dominated local ultraluminous IR galaxies (ULIRGs) with significant warm dust components than to typical local star-forming ULIRGs. The inferred IR (8-1000 μm) bolometric luminosities are found to be L bol 4 × 1012 L to3 × 1013 L (ULIRGs/hyper-luminous IR galaxies (HyLIRGs)), representing the first robust constraints on L bol for this class of object.

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