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. Kamenetzky; R. 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; K. Tanaka; T. Tsukagoshi; D. J. Wilner; G. W. Wilson; M. S. Yun; J. Zmuidzinas

doi:10.1111/j.1365-2966.2011.18918.x

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, K. Tanaka, T. Tsukagoshi, D. J. Wilner, G. W. Wilson, M. S. Yun, J. Zmuidzinas

Department of Physics

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41 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 (L_IR) and star formation rate (SFR) are 6 × 10¹³L_⊙ and 11000 M_⊙yr^-1, respectively, assuming that theL_IR 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 language	English
Pages (from-to)	3081-3096
Number of pages	16
Journal	Monthly Notices of the Royal Astronomical Society
Volume	415
Issue number	4
DOIs	https://doi.org/10.1111/j.1365-2966.2011.18918.x
Publication status	Published - 2011 Aug

Keywords

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

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1111/j.1365-2966.2011.18918.x

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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., ... 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

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

@article{c7a0d207712e48c0a4af8c95de3fdb95,

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: ISM, Galaxies: high-redshift, 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 K. Tanaka and T. Tsukagoshi and Wilner, {D. J.} and Wilson, {G. W.} and Yun, {M. S.} and J. Zmuidzinas",

year = "2011",

month = aug,

doi = "10.1111/j.1365-2966.2011.18918.x",

language = "English",

volume = "415",

pages = "3081--3096",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

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, K.

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: ISM

KW - Galaxies: high-redshift

KW - Galaxies: starburst

KW - Submillimetre: galaxies

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SN - 0035-8711

VL - 415

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EP - 3096

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

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ER -

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

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Keywords

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