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 report the detection of ubiquitous powerful nuclear outflows in massive (>10^11 Msun) z~2 star-forming galaxies (SFGs), which are plausibly driven by anActive Galactic Nucleus (AGN). The sample consists of the eight most massiveSFGs from our SINS/zC-SINF survey of galaxy kinematics with the imagingspectrometer SINFONI, six of which have sensitive high-resolution adaptiveoptics (AO) assisted observations. All of the objects are disks hosting asignificant stellar bulge. The spectra in their central regions exhibit a broadcomponent in Halpha and forbidden [NII] and [SII] line emission, with typicalvelocity FWHM ~ 1500 km/s, [NII]/Halpha ratio ~ 0.6, and intrinsic extent of 2- 3 kpc. These properties are consistent with warm ionized gas outflowsassociated with Type 2 AGN, the presence of which is confirmed via independentdiagnostics in half the galaxies. The data imply a median ionized gas massoutflow rate of ~ 60 Msun/yr and mass loading of ~ 3. At larger radii, a weakerbroad component is detected but with lower FWHM ~ 485 km/s and [NII]/Halpha ~0.35, characteristic for star formation-driven outflows as found in thelower-mass SINS/zC-SINF galaxies. The high inferred mass outflow rates andfrequent occurrence suggest the nuclear outflows efficiently expel gas out ofthe centers of the galaxies with high duty cycles, and may thus contribute tothe process of star formation quenching in massive galaxies. Larger samples athigh masses will be crucial to confirm the importance and energetics of thenuclear outflow phenomenon, and its connection to AGN activity and bulgegrowth.

The SINS/zC-SINF survey of z~2 galaxy kinematics: Evidence for powerful AGN-driven nuclear outflows in massive star-forming galaxies