ALMA twenty-six arcmin2survey of GOODS-S at one millimeter (ASAGAO)

B. Hatsukade, K. Kohno, Y. Yamaguchi, H. Umehata, Y. Ao, I. Aretxaga, K. I. Caputi, J. S. Dunlop, E. Egami, D. Espada, S. Fujimoto, N. Hayatsu, D. H. Hughes, S. Ikarashi, D. Iono, R. J. Ivison, R. Kawabe, T. Kodama, M. Lee, Y. MatsudaK. Nakanishi, K. Ohta, M. Ouchi, W. Rujopakarn, T. Suzuki, Y. Tamura, Y. Ueda, T. Wang, W. H. Wang, G. W. Wilson, Y. Yoshimura, M. S. Yun

Research output: Contribution to journalArticlepeer-review


The ALMA twenty-six arcmin2 survey of GOODS-S at one millimeter (ASAGAO) is a deep (1σ ∼61μJy/beam) and wide area (26 arcmin2) survey on a contiguous field at 1.2 mm. By combining with archival data, we obtained a deeper map in the same region (1σ ∼30μJy/beam-1, synthesized beam size 0.59″ × 0.53″), providing the largest sample of sources (25 sources at 5σ, 45 sources at 4.5σ) among ALMA blank-field surveys. The median redshift of the 4.5σ sources is 2.4. The number counts shows that 52% of the extragalactic background light at 1.2 mm is resolved into discrete sources. We create IR luminosity functions (LFs) at z = 1-3, and constrain the faintest luminosity of the LF at 2 < z < 3. The LFs are consistent with previous results based on other ALMA and SCUBA-2 observations, which suggests a positive luminosity evolution and negative density evolution.

Original languageEnglish
Pages (from-to)239-240
Number of pages2
JournalProceedings of the International Astronomical Union
Publication statusAccepted/In press - 2020


  • cosmology: observations
  • galaxies: evolution
  • galaxies: formation


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