Comparison of cosmological simulations and deep submillimetre galaxy surveys

Shohei Aoyama, Hiroyuki Hirashita, Chen Fatt Lim, Yu Yen Chang, Wei Hao Wang, Kentaro Nagamine, Kuan Chou Hou, Ikkoh Shimizu, Hui Hsuan Chung, Chien Hsiu Lee, Xian Zhong Zheng

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Recent progress in submillimetre surveys by single-dish telescopes allows us to further challenge the consistency between cosmological simulations and observations. In particular, we compare our simulations that include dust formation and destruction with the recent SCUBA-2 surveys ('STUDIES') by putting emphases on basic observational properties of dust emission such as dust temperature, size of infrared (IR)-emitting region, IR luminosity function, and IRX-β relation. After confirming that our models reproduce the local galaxy properties, we examine the STUDIES sample at z ≈ 1-4, finding that the simulation reproduces the aforementioned quantities except for the z ≳ 2 IR luminosity function at the massive end (∼1013 L☉). This means that the current simulation correctly reproduces the overall scaling between the size and luminosity (or star formation rate) of dusty region, but lacks extreme starburst phenomena at z ≳ 2. We also discuss extinction curves and possible active galactic nucleus contribution.

Original languageEnglish
Pages (from-to)1852-1864
Number of pages13
JournalMonthly Notices of the Royal Astronomical Society
Issue number2
StatePublished - 1 Apr 2019


  • Dust: extinction
  • Galaxies: ISM
  • Galaxies: evolution
  • Galaxies: formation
  • Methods: numerical

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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