Abstract
Abstract In spatially resolved galaxy observations, star formation rate (SFR) radial profiles are found to correlate with total specific SFRs. A central depletion in star formation is thought to correlate with the globally depressed SFRs of, for example, galaxies within the Green Valley (GV). We present, for the first time, radial specific SFR profiles for a statistical sample of simulated galaxies from the Illustris and EAGLE large cosmological simulations. For galaxies on the star-forming sequence, simulated specific SFR profiles are in reasonable agreement with observations. However, both galaxy samples show centrally concentrated star formation for galaxies in the GV at all galaxy stellar masses, suggesting that quenching occurs from the outside-in, in strong conflict with observations of inside-out quenching. This difference between simulations and observations may be due to resolution issues and/or possible failures in the star formation and feedback implementation in current large-scale cosmological simulations. We conclude that the distribution of star formation within galaxies is a strong additional constraint for simulations and models, in particular, related to the quenching of star formation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
