Comparison of cosmological simulations and deep submillimetre galaxy surveys

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-beta relation. After confirming that our models reproduce the local galaxy properties, we examine the STUDIES sample at z approximate to 1-4, finding that the simulation reproduces the aforementioned quantities except for the z greater than or similar to 2 IR luminosity function at the massive end (similar to 10(13) L-circle dot). 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 greater than or similar to 2. We also discuss extinction curves and possible active galactic nucleus contribution.