ISM mass and spatial distribution over galaxy’s Hubble sequence

哈勃序列上不同星系中星系介质的分布

Abstract: Galaxies are intricate ecosystems where the cold interstellar medium forms stars, regulated by energy feedback from stars and the central black hole and replenished by accretion from the intergalactic medium. How does the interstellar medium connect to their galaxy’s morphology, stellar mass, star formation, and other global properties? How do these dependencies fit in the galaxy evolution framework throughout cosmic time? The nearby Universe offers an invaluable laboratory for investigating these key questions. In this talk, I will review recent observational advancements in various projects like the xCOLD GASS, DustPedia, EDGE-CALIFA, etc. These projects measure both the integrated quantities and spatial distributions of cold gas and dust in hundreds of local galaxies across the Hubble Sequence. They study the correlations of the interstellar medium with the stellar mass, star formation rate, and the environment. I will end the talk by discussing ideas of using spectral energy distribution analysis to reveal the amount and distribution of the interstellar medium and consider its potential applications for studying galaxies in the high-redshift Universe.