Detection of an ultrabright submillimetre galaxy in the Subaru/XMM-NewtonDeep Fieldusing AzTEC/ASTE

S. Ikarashi, K. Kohno, J. E. Aguirre, I. Aretxaga, V. Arumugam, J. E. Austermann, J. J. Bock, C. M. Bradford, M. Cirasuolo, L. Earle, H. Ezawa, H. Furusawa, J. Furusawa, J. Glenn, B. Hatsukade, D. H. Hughes, D. Iono, R. J. Ivison, S. Johnson, J. KamenetzkyR. Kawabe, R. Lupu, P. Maloney, H. Matsuhara, P. D. Mauskopf, K. Motohara, E. J. Murphy, K. Nakajima, K. Nakanishi, B. J. Naylor, H. T. Nguyen, T. A. Perera, K. S. Scott, K. Shimasaku, T. Takagi, T. Takata, Y. Tamura, Kunihiko Tanaka, T. Tsukagoshi, D. J. Wilner, G. W. Wilson, M. S. Yun, J. Zmuidzinas

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

We report on the detection of an extremely bright (~37mJy at 1100μm and ~91mJy at 880μm) submillimetre galaxy (SMG), AzTEC-ASTE-SXDF1100.001 (hereafter referred to as SXDF1100.001 or Orochi), discovered in the 1100μm observations of the Subaru/XMM-NewtonDeep Fieldusing AzTEC on ASTE. Subsequent CARMA 1300-μm and SMA 880-μm observations successfully pinpoint the location of Orochi and suggest that it has two components, one extended [full width at half-maximum (FWHM) of ~4arcsec] and one compact (unresolved). Z-Spec on CSO has also been used to obtain a wide-band spectrum from 190 to 308GHz, although no significant emission/absorption lines were found. The derived upper limit to the line-to-continuum flux ratio is 0.1-0.3 (2σ) across the Z-Spec band. Based on the analysis of the derived spectral energy distribution from optical to radio wavelengths of possible counterparts near the SMA/CARMA peak position, we suggest that Orochi is a lensed, optically dark SMG lying atz~ 3.4 behind a foreground, optically visible (but red) galaxy atz~ 1.4. The deduced apparent (i.e., no correction for magnification) infrared luminosity (LIR) and star formation rate (SFR) are 6 × 1013L and 11000 Myr-1, respectively, assuming that theLIR is dominated by star formation. These values suggest that Orochi will consume its gas reservoir within a short time-scale (3 × 107yr), which is indeed comparable to those in extreme starbursts like the centres of local ultraluminous infrared galaxies (ULIRGs).

Original languageEnglish
Pages (from-to)3081-3096
Number of pages16
JournalMonthly Notices of the Royal Astronomical Society
Volume415
Issue number4
DOIs
Publication statusPublished - 2011 Aug

Fingerprint

XMM-Newton telescope
radio
galaxies
wavelength
timescale
spectral mixture analysis
energy
star formation rate
spectral energy distribution
magnification
star formation
luminosity
continuums
broadband
distribution
gas reservoir
rate
detection
analysis
gases

Keywords

  • Galaxies: high-redshift
  • Galaxies: ISM
  • Galaxies: starburst
  • Submillimetre: galaxies

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Ikarashi, S., Kohno, K., Aguirre, J. E., Aretxaga, I., Arumugam, V., Austermann, J. E., ... Zmuidzinas, J. (2011). Detection of an ultrabright submillimetre galaxy in the Subaru/XMM-NewtonDeep Fieldusing AzTEC/ASTE. Monthly Notices of the Royal Astronomical Society, 415(4), 3081-3096. https://doi.org/10.1111/j.1365-2966.2011.18918.x

Detection of an ultrabright submillimetre galaxy in the Subaru/XMM-NewtonDeep Fieldusing AzTEC/ASTE. / Ikarashi, S.; Kohno, K.; Aguirre, J. E.; Aretxaga, I.; Arumugam, V.; Austermann, J. E.; Bock, J. J.; Bradford, C. M.; Cirasuolo, M.; Earle, L.; Ezawa, H.; Furusawa, H.; Furusawa, J.; Glenn, J.; Hatsukade, B.; Hughes, D. H.; Iono, D.; Ivison, R. J.; Johnson, S.; Kamenetzky, J.; Kawabe, R.; Lupu, R.; Maloney, P.; Matsuhara, H.; Mauskopf, P. D.; Motohara, K.; Murphy, E. J.; Nakajima, K.; Nakanishi, K.; Naylor, B. J.; Nguyen, H. T.; Perera, T. A.; Scott, K. S.; Shimasaku, K.; Takagi, T.; Takata, T.; Tamura, Y.; Tanaka, Kunihiko; Tsukagoshi, T.; Wilner, D. J.; Wilson, G. W.; Yun, M. S.; Zmuidzinas, J.

In: Monthly Notices of the Royal Astronomical Society, Vol. 415, No. 4, 08.2011, p. 3081-3096.

Research output: Contribution to journalArticle

Ikarashi, S, Kohno, K, Aguirre, JE, Aretxaga, I, Arumugam, V, Austermann, JE, Bock, JJ, Bradford, CM, Cirasuolo, M, Earle, L, Ezawa, H, Furusawa, H, Furusawa, J, Glenn, J, Hatsukade, B, Hughes, DH, Iono, D, Ivison, RJ, Johnson, S, Kamenetzky, J, Kawabe, R, Lupu, R, Maloney, P, Matsuhara, H, Mauskopf, PD, Motohara, K, Murphy, EJ, Nakajima, K, Nakanishi, K, Naylor, BJ, Nguyen, HT, Perera, TA, Scott, KS, Shimasaku, K, Takagi, T, Takata, T, Tamura, Y, Tanaka, K, Tsukagoshi, T, Wilner, DJ, Wilson, GW, Yun, MS & Zmuidzinas, J 2011, 'Detection of an ultrabright submillimetre galaxy in the Subaru/XMM-NewtonDeep Fieldusing AzTEC/ASTE', Monthly Notices of the Royal Astronomical Society, vol. 415, no. 4, pp. 3081-3096. https://doi.org/10.1111/j.1365-2966.2011.18918.x
Ikarashi, S. ; Kohno, K. ; Aguirre, J. E. ; Aretxaga, I. ; Arumugam, V. ; Austermann, J. E. ; Bock, J. J. ; Bradford, C. M. ; Cirasuolo, M. ; Earle, L. ; Ezawa, H. ; Furusawa, H. ; Furusawa, J. ; Glenn, J. ; Hatsukade, B. ; Hughes, D. H. ; Iono, D. ; Ivison, R. J. ; Johnson, S. ; Kamenetzky, J. ; Kawabe, R. ; Lupu, R. ; Maloney, P. ; Matsuhara, H. ; Mauskopf, P. D. ; Motohara, K. ; Murphy, E. J. ; Nakajima, K. ; Nakanishi, K. ; Naylor, B. J. ; Nguyen, H. T. ; Perera, T. A. ; Scott, K. S. ; Shimasaku, K. ; Takagi, T. ; Takata, T. ; Tamura, Y. ; Tanaka, Kunihiko ; Tsukagoshi, T. ; Wilner, D. J. ; Wilson, G. W. ; Yun, M. S. ; Zmuidzinas, J. / Detection of an ultrabright submillimetre galaxy in the Subaru/XMM-NewtonDeep Fieldusing AzTEC/ASTE. In: Monthly Notices of the Royal Astronomical Society. 2011 ; Vol. 415, No. 4. pp. 3081-3096.
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title = "Detection of an ultrabright submillimetre galaxy in the Subaru/XMM-NewtonDeep Fieldusing AzTEC/ASTE",
abstract = "We report on the detection of an extremely bright (~37mJy at 1100μm and ~91mJy at 880μm) submillimetre galaxy (SMG), AzTEC-ASTE-SXDF1100.001 (hereafter referred to as SXDF1100.001 or Orochi), discovered in the 1100μm observations of the Subaru/XMM-NewtonDeep Fieldusing AzTEC on ASTE. Subsequent CARMA 1300-μm and SMA 880-μm observations successfully pinpoint the location of Orochi and suggest that it has two components, one extended [full width at half-maximum (FWHM) of ~4arcsec] and one compact (unresolved). Z-Spec on CSO has also been used to obtain a wide-band spectrum from 190 to 308GHz, although no significant emission/absorption lines were found. The derived upper limit to the line-to-continuum flux ratio is 0.1-0.3 (2σ) across the Z-Spec band. Based on the analysis of the derived spectral energy distribution from optical to radio wavelengths of possible counterparts near the SMA/CARMA peak position, we suggest that Orochi is a lensed, optically dark SMG lying atz~ 3.4 behind a foreground, optically visible (but red) galaxy atz~ 1.4. The deduced apparent (i.e., no correction for magnification) infrared luminosity (LIR) and star formation rate (SFR) are 6 × 1013L⊙ and 11000 M⊙yr-1, respectively, assuming that theLIR is dominated by star formation. These values suggest that Orochi will consume its gas reservoir within a short time-scale (3 × 107yr), which is indeed comparable to those in extreme starbursts like the centres of local ultraluminous infrared galaxies (ULIRGs).",
keywords = "Galaxies: high-redshift, Galaxies: ISM, Galaxies: starburst, Submillimetre: galaxies",
author = "S. Ikarashi and K. Kohno and Aguirre, {J. E.} and I. Aretxaga and V. Arumugam and Austermann, {J. E.} and Bock, {J. J.} and Bradford, {C. M.} and M. Cirasuolo and L. Earle and H. Ezawa and H. Furusawa and J. Furusawa and J. Glenn and B. Hatsukade and Hughes, {D. H.} and D. Iono and Ivison, {R. J.} and S. Johnson and J. Kamenetzky and R. Kawabe and R. Lupu and P. Maloney and H. Matsuhara and Mauskopf, {P. D.} and K. Motohara and Murphy, {E. J.} and K. Nakajima and K. Nakanishi and Naylor, {B. J.} and Nguyen, {H. T.} and Perera, {T. A.} and Scott, {K. S.} and K. Shimasaku and T. Takagi and T. Takata and Y. Tamura and Kunihiko Tanaka and T. Tsukagoshi and Wilner, {D. J.} and Wilson, {G. W.} and Yun, {M. S.} and J. Zmuidzinas",
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TY - JOUR

T1 - Detection of an ultrabright submillimetre galaxy in the Subaru/XMM-NewtonDeep Fieldusing AzTEC/ASTE

AU - Ikarashi, S.

AU - Kohno, K.

AU - Aguirre, J. E.

AU - Aretxaga, I.

AU - Arumugam, V.

AU - Austermann, J. E.

AU - Bock, J. J.

AU - Bradford, C. M.

AU - Cirasuolo, M.

AU - Earle, L.

AU - Ezawa, H.

AU - Furusawa, H.

AU - Furusawa, J.

AU - Glenn, J.

AU - Hatsukade, B.

AU - Hughes, D. H.

AU - Iono, D.

AU - Ivison, R. J.

AU - Johnson, S.

AU - Kamenetzky, J.

AU - Kawabe, R.

AU - Lupu, R.

AU - Maloney, P.

AU - Matsuhara, H.

AU - Mauskopf, P. D.

AU - Motohara, K.

AU - Murphy, E. J.

AU - Nakajima, K.

AU - Nakanishi, K.

AU - Naylor, B. J.

AU - Nguyen, H. T.

AU - Perera, T. A.

AU - Scott, K. S.

AU - Shimasaku, K.

AU - Takagi, T.

AU - Takata, T.

AU - Tamura, Y.

AU - Tanaka, Kunihiko

AU - Tsukagoshi, T.

AU - Wilner, D. J.

AU - Wilson, G. W.

AU - Yun, M. S.

AU - Zmuidzinas, J.

PY - 2011/8

Y1 - 2011/8

N2 - We report on the detection of an extremely bright (~37mJy at 1100μm and ~91mJy at 880μm) submillimetre galaxy (SMG), AzTEC-ASTE-SXDF1100.001 (hereafter referred to as SXDF1100.001 or Orochi), discovered in the 1100μm observations of the Subaru/XMM-NewtonDeep Fieldusing AzTEC on ASTE. Subsequent CARMA 1300-μm and SMA 880-μm observations successfully pinpoint the location of Orochi and suggest that it has two components, one extended [full width at half-maximum (FWHM) of ~4arcsec] and one compact (unresolved). Z-Spec on CSO has also been used to obtain a wide-band spectrum from 190 to 308GHz, although no significant emission/absorption lines were found. The derived upper limit to the line-to-continuum flux ratio is 0.1-0.3 (2σ) across the Z-Spec band. Based on the analysis of the derived spectral energy distribution from optical to radio wavelengths of possible counterparts near the SMA/CARMA peak position, we suggest that Orochi is a lensed, optically dark SMG lying atz~ 3.4 behind a foreground, optically visible (but red) galaxy atz~ 1.4. The deduced apparent (i.e., no correction for magnification) infrared luminosity (LIR) and star formation rate (SFR) are 6 × 1013L⊙ and 11000 M⊙yr-1, respectively, assuming that theLIR is dominated by star formation. These values suggest that Orochi will consume its gas reservoir within a short time-scale (3 × 107yr), which is indeed comparable to those in extreme starbursts like the centres of local ultraluminous infrared galaxies (ULIRGs).

AB - We report on the detection of an extremely bright (~37mJy at 1100μm and ~91mJy at 880μm) submillimetre galaxy (SMG), AzTEC-ASTE-SXDF1100.001 (hereafter referred to as SXDF1100.001 or Orochi), discovered in the 1100μm observations of the Subaru/XMM-NewtonDeep Fieldusing AzTEC on ASTE. Subsequent CARMA 1300-μm and SMA 880-μm observations successfully pinpoint the location of Orochi and suggest that it has two components, one extended [full width at half-maximum (FWHM) of ~4arcsec] and one compact (unresolved). Z-Spec on CSO has also been used to obtain a wide-band spectrum from 190 to 308GHz, although no significant emission/absorption lines were found. The derived upper limit to the line-to-continuum flux ratio is 0.1-0.3 (2σ) across the Z-Spec band. Based on the analysis of the derived spectral energy distribution from optical to radio wavelengths of possible counterparts near the SMA/CARMA peak position, we suggest that Orochi is a lensed, optically dark SMG lying atz~ 3.4 behind a foreground, optically visible (but red) galaxy atz~ 1.4. The deduced apparent (i.e., no correction for magnification) infrared luminosity (LIR) and star formation rate (SFR) are 6 × 1013L⊙ and 11000 M⊙yr-1, respectively, assuming that theLIR is dominated by star formation. These values suggest that Orochi will consume its gas reservoir within a short time-scale (3 × 107yr), which is indeed comparable to those in extreme starbursts like the centres of local ultraluminous infrared galaxies (ULIRGs).

KW - Galaxies: high-redshift

KW - Galaxies: ISM

KW - Galaxies: starburst

KW - Submillimetre: galaxies

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U2 - 10.1111/j.1365-2966.2011.18918.x

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