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 Plus annual

Presents the access of premium content as premium feature

Premium Content

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 annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We use the Henriques et al. (2015) version of the Munich galaxy formationmodel (L-GALAXIES) to investigate why the halo and stellar mass scales abovewhich galaxies are quenched are constant with redshift and coincide with thescale where baryons are most efficiently converted into stars. This modelassumes that central galaxies are quenched by AGN feedback when hot halo gasaccretes onto a supermassive black hole. Nevertheless, we find that supernova(SN) feedback sets both mass scales. As haloes grow above a threshold mass, SNecan no longer eject material so their hot gas content increases, enhancing thecooling rate onto the central galaxy, its cold gas content, its star formationrate and the growth rate of its central black hole. Strong AGN feedbackterminates this short-lived phase by suppressing the fuel supply for starformation. Despite strong evolution of the halo mass - temperature relation,quenching occurs at a redshift-independent halo and stellar mass whichcoincides with the mass where baryons have been converted into stars withmaximal efficiency. These regularities and coincidences are a result of thespecific parameters selected by MCMC tuning of the model to fit the observedabundance and passive fraction of galaxies over the redshift range 0<z<3. Thusthey are required by the observed evolution of the galaxy population, at leastin the context of models of this type.

The origin of the mass scales for maximal star formation efficiency and quenching: the critical role of Supernovae