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

Energetic feedback from active galactic nuclei (AGN) is an importantingredient for regulating the star-formation history of galaxies in models ofgalaxy formation, which makes it important to study how AGN feedback actuallyoccurs in practice. In order to catch AGNs in the act of quenching starformation we have used the interstellar NaD absorption lines to look forcold-gas outflows in a sample of 456 nearby galaxies for which we couldunambigously ascertain the presence of radio AGN activity, thanks to radioimaging at milli-arcsecond scales. While compact radio emission indicating aradio AGN was found in 103 galaxies (23% of the sample), and 23 objects (5%)exhibited NaD absorption-line kinematics suggestive of cold-gas outflows, notone object showed evidence of a radio AGN and of a cold-gas outflowsimultaneously. Radio AGN activity was found predominantly in early-typegalaxies, while cold-gas outflows were mainly seen in spiral galaxies withcentral star-formation or composite star-formation/AGN activity. Optical AGNsalso do not seem capable of driving galactic winds in our sample. Our work addsto a picture of the low-redshift Universe where cold-gas outflows in massivegalaxies are generally driven by star formation and where radio-AGN activityoccurs most often in systems in which the gas reservoir has already beensignificantly depleted.

Cold-gas outflows in typical low-redshift galaxies are driven by star formation, not AGN