Dust-to-stellar mass ratio in 162 dusty star-forming galaxies
speaker: Shuo Huang
Abstract:
Dust absorbs radiation at short wavelengths and re-emit the energy at far-infrared and plays an important role in physical processes in the interstellar medium. It is suggested that dust-to-stellar mass ratio can be used to probe evolutionary states of star-forming galaxies. In this talk I introduce the SED analysis of 162 dusty star-forming galaxies (DSFGs) selected by 1.1 mm ALMA observations. Using the latest modelling and fitting techniques to analyze the multiwavelength dataset, I derive the dust mass together with other physical properties. The negative correlation between M_dust/M_star and age in post-starburst galaxies is also present in massive galaxies that are still actively forming stars. The distance above the star-forming main sequence decreases with increasing age. Such results may reflect a smooth evolution of DSFGs’ physical properties.