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

Galaxy-scale bars are expected to provide an effective means for drivingmaterial towards the central region in spiral galaxies, and possibly feedingsupermassive black holes (BHs). Here we present a statistically-complete studyof the effect of bars on average BH accretion. From a well-selected sample of50,794 spiral galaxies (with M* ~ 0.2-30 x 10^10 Msun) extracted from the SloanDigital Sky Survey Galaxy Zoo 2 project, we separate those sources consideredto contain galaxy-scale bars from those that do not. Using archival data takenby the Chandra X-ray Observatory, we identify X-ray luminous (L_X >~ 10^41erg/s) active galactic nuclei (AGN) and perform an X-ray stacking analysis onthe remaining X-ray undetected sources. Through X-ray stacking, we derive atime-averaged look at accretion for galaxies at fixed stellar mass and starformation rate, finding that the average nuclear accretion rates of galaxieswith bar structures are fully consistent with those lacking bars (Mdot_acc ~ 3x 10^-5 Msun/yr). Hence, we robustly conclude that large-scale bars have littleor no effect on the average growth of BHs in nearby (z < 0.15) galaxies overgigayear timescales.

Galaxy-scale Bars in Late-type Sloan Digital Sky Survey Galaxies Do Not Influence the Average Accretion Rates of Supermassive Black Holes