Star-forming Clumps in Local Infrared Galaxies

22 November 2019

Understanding star formation is a key aim of astrophysics, and a major component of the Great Observatories All-sky LIRG Survey is studying extreme, embedded star formation in the local universe. We have recently completed a study of “Star-forming Clumps in Local Luminous Infrared Galaxies” (Larson+), which uses imaging from the Hubble Space Telescope to identify and characterize star-forming regions in the GOALS sample. Using this data we were able to determine star formation rates, ages, and (stellar) masses for a large number of star forming clumps. By comparing these measurements with the properties of star-forming regions in other galaxies we showed that the regions in these extreme local systems bridge the gap in properties between more quiescent local star-forming galaxies and the more vigorously star-forming galaxies that existed when the Universe was much younger. The paper has been accepted for publication in the Astrophysical Journal and a preprint is available.