AzTEC/ASTE 1.1-mm survey of the AKARI Deep Field South

Source catalogue and number counts

B. Hatsukade, K. Kohno, I. Aretxaga, J. E. Austermann, H. Ezawa, D. H. Hughes, S. Ikarashi, D. Iono, R. Kawabe, S. Khan, H. Matsuo, S. Matsuura, K. Nakanishi, T. Oshima, T. Perera, K. S. Scott, M. Shirahata, T. T. Takeuchi, Y. Tamura, Kunihiko Tanaka & 3 others T. Tosaki, G. W. Wilson, M. S. Yun

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

We present results of a 1.1-mm deep survey of the AKARI Deep Field South (ADF-S) with AzTEC mounted on the Atacama Submillimetre Telescope Experiment (ASTE). We obtained a map of 0.25-deg2 area with an rms noise level of 0.32-0.71 mJy. This is one of the deepest and widest maps thus far at millimetre and submillimetre wavelengths. We uncovered 198 sources with a significance of 3.5σ-15.6σ, providing the largest catalogue of 1.1-mm sources in a contiguous region. Most of the sources are not detected in the far-infrared bands of the AKARI satellite, suggesting that they are mostly at z≥ 1.5 given the detection limits. We constructed differential and cumulative number counts in the ADF-S, the Subaru/XMM-Newton Deep Field and the SSA 22 field surveyed by AzTEC/ASTE, which provide currently the tightest constraints on the faint end. The integration of the best-fitting number counts in the ADF-S finds that the contribution of 1.1-mm sources with fluxes of ≥1 mJy to the cosmic infrared background (CIB) at 1.1 mm is 12-16 per cent, suggesting that the large fraction of the CIB originates from faint sources of which the number counts are not yet constrained. We estimate the cosmic star formation rate density contributed by 1.1-mm sources with ≥1 mJy using the best-fitting number counts in the ADF-S and find that it is lower by about a factor of 5-10 compared to those derived from UV/optically selected galaxies at z∼ 2-3. The fraction of stellar mass of the present-day universe produced by 1.1-mm sources with ≥1 mJy at z≥ 1 is ∼20 per cent, calculated by the time integration of the star formation rate density. If we consider the recycled fraction of >0.4, which is the fraction of materials forming stars returned to the interstellar medium, the fraction of stellar mass produced by 1.1-mm sources decreases to ≲10 per cent.

Original languageEnglish
Pages (from-to)102-116
Number of pages15
JournalMonthly Notices of the Royal Astronomical Society
Volume411
Issue number1
DOIs
Publication statusPublished - 2011 Feb

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catalogs
telescopes
experiment
wavelength
star formation rate
stellar mass
rate
XMM-Newton telescope
newton
universe
galaxies
stars
detection
noise level
material
estimates
wavelengths

Keywords

  • Galaxies: evolution
  • Galaxies: formation
  • Galaxies: high-redshift
  • Galaxies: starburst

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Hatsukade, B., Kohno, K., Aretxaga, I., Austermann, J. E., Ezawa, H., Hughes, D. H., ... Yun, M. S. (2011). AzTEC/ASTE 1.1-mm survey of the AKARI Deep Field South: Source catalogue and number counts. Monthly Notices of the Royal Astronomical Society, 411(1), 102-116. https://doi.org/10.1111/j.1365-2966.2010.17658.x

AzTEC/ASTE 1.1-mm survey of the AKARI Deep Field South : Source catalogue and number counts. / Hatsukade, B.; Kohno, K.; Aretxaga, I.; Austermann, J. E.; Ezawa, H.; Hughes, D. H.; Ikarashi, S.; Iono, D.; Kawabe, R.; Khan, S.; Matsuo, H.; Matsuura, S.; Nakanishi, K.; Oshima, T.; Perera, T.; Scott, K. S.; Shirahata, M.; Takeuchi, T. T.; Tamura, Y.; Tanaka, Kunihiko; Tosaki, T.; Wilson, G. W.; Yun, M. S.

In: Monthly Notices of the Royal Astronomical Society, Vol. 411, No. 1, 02.2011, p. 102-116.

Research output: Contribution to journalArticle

Hatsukade, B, Kohno, K, Aretxaga, I, Austermann, JE, Ezawa, H, Hughes, DH, Ikarashi, S, Iono, D, Kawabe, R, Khan, S, Matsuo, H, Matsuura, S, Nakanishi, K, Oshima, T, Perera, T, Scott, KS, Shirahata, M, Takeuchi, TT, Tamura, Y, Tanaka, K, Tosaki, T, Wilson, GW & Yun, MS 2011, 'AzTEC/ASTE 1.1-mm survey of the AKARI Deep Field South: Source catalogue and number counts', Monthly Notices of the Royal Astronomical Society, vol. 411, no. 1, pp. 102-116. https://doi.org/10.1111/j.1365-2966.2010.17658.x
Hatsukade, B. ; Kohno, K. ; Aretxaga, I. ; Austermann, J. E. ; Ezawa, H. ; Hughes, D. H. ; Ikarashi, S. ; Iono, D. ; Kawabe, R. ; Khan, S. ; Matsuo, H. ; Matsuura, S. ; Nakanishi, K. ; Oshima, T. ; Perera, T. ; Scott, K. S. ; Shirahata, M. ; Takeuchi, T. T. ; Tamura, Y. ; Tanaka, Kunihiko ; Tosaki, T. ; Wilson, G. W. ; Yun, M. S. / AzTEC/ASTE 1.1-mm survey of the AKARI Deep Field South : Source catalogue and number counts. In: Monthly Notices of the Royal Astronomical Society. 2011 ; Vol. 411, No. 1. pp. 102-116.
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abstract = "We present results of a 1.1-mm deep survey of the AKARI Deep Field South (ADF-S) with AzTEC mounted on the Atacama Submillimetre Telescope Experiment (ASTE). We obtained a map of 0.25-deg2 area with an rms noise level of 0.32-0.71 mJy. This is one of the deepest and widest maps thus far at millimetre and submillimetre wavelengths. We uncovered 198 sources with a significance of 3.5σ-15.6σ, providing the largest catalogue of 1.1-mm sources in a contiguous region. Most of the sources are not detected in the far-infrared bands of the AKARI satellite, suggesting that they are mostly at z≥ 1.5 given the detection limits. We constructed differential and cumulative number counts in the ADF-S, the Subaru/XMM-Newton Deep Field and the SSA 22 field surveyed by AzTEC/ASTE, which provide currently the tightest constraints on the faint end. The integration of the best-fitting number counts in the ADF-S finds that the contribution of 1.1-mm sources with fluxes of ≥1 mJy to the cosmic infrared background (CIB) at 1.1 mm is 12-16 per cent, suggesting that the large fraction of the CIB originates from faint sources of which the number counts are not yet constrained. We estimate the cosmic star formation rate density contributed by 1.1-mm sources with ≥1 mJy using the best-fitting number counts in the ADF-S and find that it is lower by about a factor of 5-10 compared to those derived from UV/optically selected galaxies at z∼ 2-3. The fraction of stellar mass of the present-day universe produced by 1.1-mm sources with ≥1 mJy at z≥ 1 is ∼20 per cent, calculated by the time integration of the star formation rate density. If we consider the recycled fraction of >0.4, which is the fraction of materials forming stars returned to the interstellar medium, the fraction of stellar mass produced by 1.1-mm sources decreases to ≲10 per cent.",
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T1 - AzTEC/ASTE 1.1-mm survey of the AKARI Deep Field South

T2 - Source catalogue and number counts

AU - Hatsukade, B.

AU - Kohno, K.

AU - Aretxaga, I.

AU - Austermann, J. E.

AU - Ezawa, H.

AU - Hughes, D. H.

AU - Ikarashi, S.

AU - Iono, D.

AU - Kawabe, R.

AU - Khan, S.

AU - Matsuo, H.

AU - Matsuura, S.

AU - Nakanishi, K.

AU - Oshima, T.

AU - Perera, T.

AU - Scott, K. S.

AU - Shirahata, M.

AU - Takeuchi, T. T.

AU - Tamura, Y.

AU - Tanaka, Kunihiko

AU - Tosaki, T.

AU - Wilson, G. W.

AU - Yun, M. S.

PY - 2011/2

Y1 - 2011/2

N2 - We present results of a 1.1-mm deep survey of the AKARI Deep Field South (ADF-S) with AzTEC mounted on the Atacama Submillimetre Telescope Experiment (ASTE). We obtained a map of 0.25-deg2 area with an rms noise level of 0.32-0.71 mJy. This is one of the deepest and widest maps thus far at millimetre and submillimetre wavelengths. We uncovered 198 sources with a significance of 3.5σ-15.6σ, providing the largest catalogue of 1.1-mm sources in a contiguous region. Most of the sources are not detected in the far-infrared bands of the AKARI satellite, suggesting that they are mostly at z≥ 1.5 given the detection limits. We constructed differential and cumulative number counts in the ADF-S, the Subaru/XMM-Newton Deep Field and the SSA 22 field surveyed by AzTEC/ASTE, which provide currently the tightest constraints on the faint end. The integration of the best-fitting number counts in the ADF-S finds that the contribution of 1.1-mm sources with fluxes of ≥1 mJy to the cosmic infrared background (CIB) at 1.1 mm is 12-16 per cent, suggesting that the large fraction of the CIB originates from faint sources of which the number counts are not yet constrained. We estimate the cosmic star formation rate density contributed by 1.1-mm sources with ≥1 mJy using the best-fitting number counts in the ADF-S and find that it is lower by about a factor of 5-10 compared to those derived from UV/optically selected galaxies at z∼ 2-3. The fraction of stellar mass of the present-day universe produced by 1.1-mm sources with ≥1 mJy at z≥ 1 is ∼20 per cent, calculated by the time integration of the star formation rate density. If we consider the recycled fraction of >0.4, which is the fraction of materials forming stars returned to the interstellar medium, the fraction of stellar mass produced by 1.1-mm sources decreases to ≲10 per cent.

AB - We present results of a 1.1-mm deep survey of the AKARI Deep Field South (ADF-S) with AzTEC mounted on the Atacama Submillimetre Telescope Experiment (ASTE). We obtained a map of 0.25-deg2 area with an rms noise level of 0.32-0.71 mJy. This is one of the deepest and widest maps thus far at millimetre and submillimetre wavelengths. We uncovered 198 sources with a significance of 3.5σ-15.6σ, providing the largest catalogue of 1.1-mm sources in a contiguous region. Most of the sources are not detected in the far-infrared bands of the AKARI satellite, suggesting that they are mostly at z≥ 1.5 given the detection limits. We constructed differential and cumulative number counts in the ADF-S, the Subaru/XMM-Newton Deep Field and the SSA 22 field surveyed by AzTEC/ASTE, which provide currently the tightest constraints on the faint end. The integration of the best-fitting number counts in the ADF-S finds that the contribution of 1.1-mm sources with fluxes of ≥1 mJy to the cosmic infrared background (CIB) at 1.1 mm is 12-16 per cent, suggesting that the large fraction of the CIB originates from faint sources of which the number counts are not yet constrained. We estimate the cosmic star formation rate density contributed by 1.1-mm sources with ≥1 mJy using the best-fitting number counts in the ADF-S and find that it is lower by about a factor of 5-10 compared to those derived from UV/optically selected galaxies at z∼ 2-3. The fraction of stellar mass of the present-day universe produced by 1.1-mm sources with ≥1 mJy at z≥ 1 is ∼20 per cent, calculated by the time integration of the star formation rate density. If we consider the recycled fraction of >0.4, which is the fraction of materials forming stars returned to the interstellar medium, the fraction of stellar mass produced by 1.1-mm sources decreases to ≲10 per cent.

KW - Galaxies: evolution

KW - Galaxies: formation

KW - Galaxies: high-redshift

KW - Galaxies: starburst

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JO - Monthly Notices of the Royal Astronomical Society

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