ALMA twenty-six arcmin2 survey of GOODS-S at one millimeter (ASAGAO): Source catalog and number counts

Bunyo Hatsukade, Kotaro Kohno, Yuki Yamaguchi, Hideki Umehata, Yiping Ao, Itziar Aretxaga, Karina I. Caputi, James S. Dunlop, Eiichi Egami, Daniel Espada, Seiji Fujimoto, Natsuki H. Hayatsu, David H. Hughes, Soh Ikarashi, Daisuke Iono, Rob J. Ivison, Ryohei Kawabe, Tadayuki Kodama, Minju Lee, Yuichi MatsudaKouichiro Nakanishi, Kouji Ohta, Masami Ouchi, Wiphu Rujopakarn, Tomoko Suzuki, Yoichi Tamura, Yoshihiro Ueda, Tao Wang, Wei Hao Wang, Grant W. Wilson, Yuki Yoshimura, Min S. Yun

Research output: Contribution to journalReview articlepeer-review

21 Scopus citations


We present the survey design, data reduction, construction of images, and source catalog of the Atacama Large Millimeter/submillimeter Array (ALMA) twenty-six arcmin2 survey of GOODS-S at one millimeter (ASAGAO). ASAGAO is a deep (1 σ depth ∼ 61 μJy beam−1 for a 250 kλ-tapered map with a synthesized beam size of 0.51 × 0.45) and wide area (26 arcmin2) survey on a contiguous field at 1.2 mm. By combining with ALMA archival data in the GOODS-South field, we obtained a deeper map in the same region (1 σ depth ∼ 30 μJy beam−1 for a deep region with a 250 kλ-taper, and a synthesized beam size of 0.59 × 0.53), providing the largest sample of sources (25 sources at ≥5.0 σ, 45 sources at ≥4.5 σ) among ALMA blank-field surveys to date. The number counts show that 52+118 % of the extragalactic background light at 1.2 mm is resolved into discrete sources at S1.2 mm > 135 μJy. We create infrared (IR) luminosity functions (LFs) in the redshift range of z = 1–3 from the ASAGAO sources with Ks-band counterparts, and constrain the faintest luminosity of the LF at 2.0 < z < 3.0. The LFs are consistent with previous results based on other ALMA and SCUBA-2 observations, which suggest a positive luminosity evolution and negative density evolution with increasing redshift. We find that obscured star-formation of sources with IR luminosities of log (LIR/L) 11.8 account for ≈60%–90% of the z ∼ 2 cosmic star-formation rate density.

Original languageEnglish (US)
Article numberpsy104
JournalPublications of the Astronomical Society of Japan
Issue number6
StatePublished - Dec 1 2018


  • Cosmology: observations
  • Galaxies: evolution
  • Galaxies: formation
  • Galaxies: high-redshift
  • Submillimeter: galaxies

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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