English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We use cosmological hydrodynamical simulations to investigate the role offeedback from accreting black holes on the evolution of sizes, compactness,stellar core density and specific star-formation of massive galaxies withstellar masses of $ M_{star} > 10^{10.9} M_{\odot}$. We perform two sets ofcosmological zoom-in simulations of 30 halos to z=0: (1) without black holesand Active Galactic Nucleus (AGN) feedback and (2) with AGN feedback arisingfrom winds and X-ray radiation. We find that AGN feedback can alter the stellardensity distribution, reduce the core density within the central 1 kpc by 0.3dex from z=1, and enhance the size growth of massive galaxies. We also findthat galaxies simulated with AGN feedback evolve along similar tracks to thosecharacterized by observations in specific star formation versus compactness. Weconfirm that AGN feedback plays an important role in transforming galaxies fromblue compact galaxies into red extended galaxies in two ways: (1) iteffectively quenches the star formation, transforming blue compact galaxiesinto compact quiescent galaxies and (2) it also removes and prevents newaccretion of cold gas, shutting down in-situ star formation and causingsubsequent mergers to be gas-poor or mixed. Gas poor minor mergers then buildup an extended stellar envelope. AGN feedback also puffs up the central regionthrough the fast AGN driven winds as well as the slow expulsion of gas whilethe black hole is quiescent. Without AGN feedback, large amounts of gasaccumulate in the central region, triggering star formation and leading tooverly massive blue galaxies with dense stellar cores.

The Role of Black Hole Feedback on Size and Structural Evolution in Massive Galaxies