J/A+A/707/A152ivo://CDS.VizieR/J/A+A/707/A152CDSLa Marca A.Nardone M.T.Wang L.Margalef-Bentabol B.Kruk S.,Trager S.C.2026-03-03T08:25:55Z2026-03-03T09:25:20ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frinteracting-galaxiesactive-galactic-nucleiastrometryinfrared-photometrygalaxy-radiigalaxy-classification-systemsWe investigate the role of galactic bars in fuelling and triggering Active Galactic Nucleus (AGN) in disc galaxies up to z~0.8. We utilise a Deep Learning model, fine-tuned on Galaxy Zoo volunteer classifications, to identify (strongly and weakly) barred and unbarred disc galaxies in Hyper Suprime-Cam Subaru Strategic Program i-band images. We select AGN using three independent diagnostics: mid-infrared colours, X-ray detections, and spectral energy distribution (SED) fitting. The SED analysis, performed using CIGALE, quantifies the relative AGN contribution to the total galaxy luminosity (f_AGN_) and the AGN luminosity (L_disc_). We assess the impact of bars by comparing AGN incidence and properties in barred galaxies against carefully constructed redshift-, stellar mass-, and colour-matched unbarred control samples. Our binary AGN classification experiment demonstrates that barred disc galaxies host a higher fraction of AGN compared to their unbarred counterparts, though the significance depends on the AGN selection method, with a more modest excess for SED AGN, and control sample size. This suggests a contributing role for bars in the global AGN budget. The contribution of bars to AGN fuelling appears confined to systems where the AGN has a lower relative contribution to the host galaxy's emission (f_AGN_<0.75). Crucially, we find a significant dearth of barred disc galaxies hosting AGN with f_AGN_>0.75, independent of bar strength. Consistent with this, the fraction of barred galaxies among AGN hosts decreases with increasing L_disc_. Combined with previous results, we suggest that bars may contribute to fuelling the population of low-to-moderate luminosity AGN, but major mergers are the principal mechanism for triggering the most powerful and dominant accretion events.2026A&A...707A.152Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A152CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/690/A326 : Merger-AGN connection in the NW-2 field (La Marca+, 2024)J/A+A/661/A1 : The eFEDS X-ray catalogs (V7.4) (Brunner+, 2022)J/A+A/661/A3 : eFEDS counterparts to point-like sources (Salvato+, 2022)J/A+A/632/A34 : KiDS+VIKING-450 opt+NIR dataset (Wright+, 2019)J/A+A/622/A103 : Python Code Investigating GALaxy Emission (Boquien+, 2019)J/A+A/598/A32 : 2D decomposition of CALIFA galaxies (Mendez-Abreu+, 2017)J/MNRAS/509/3966 : Galaxy Zoo DR1&2, DR5 and DeepL version (Walmsley+, 2022)J/MNRAS/473/4731 : Barred galaxies structural decomposition (Kruk+, 2018)J/MNRAS/462/3146 : Herschel-ATLAS DR1 (HATLAS) (Valiante+, 2016)J/MNRAS/461/3663 : Galaxy Zoo 2: new classification (Hart+, 2016)J/MNRAS/435/2835 : Morphological types from Galaxy Zoo 2 (Willett+, 2013)J/MNRAS/419/687 : Morphology of luminous radio-loud AGN (Ramos Almeida+, 2012)J/MNRAS/413/971 : Galaxy And Mass Assembly (GAMA) DR1 (Driver+, 2011)J/ApJ/739/57 : Ultra hard X-ray AGNs in the Swift/BAT survey (Koss+, 2011)J/ApJS/186/427 : Detailed morphology of SDSS galaxies (Nair+, 2010)II/329 : VIKING catalogue data release 1 (Edge+, 2013)II/388 : Euclid final merged catalog. Q1 data releasehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/707/A152https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/707/A152http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/707/A152https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/707/A152https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/707/A152http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/707/A152GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/707/A152/catalog (Master catalogue of N-W2 selected disc galaxies classified with Zoobot algorithm)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/707/A152/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/707/A152/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/707/A152/catalog?GETtext/xml+votable180.050000true133.1958701036420.353671069198290.0055555555555555564/1365 1706 5/1024-1026 5459 5468-5469 6819 6828 6830 10239 6/4108 4112 4128 21829-21831 21833 21835 21861 21863 21880-21881 21884 27270-27271 27273-27275 27288 27290 27316 27318 27324 40949 40951 40953-40955https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/707/A152?format=asciiOpticalInfrareddefaultJ/A+A/707/A152/catalogMaster catalogue of N-W2 selected disc galaxies classified with Zoobot algorithmrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID? HSC-SSP survey id (id)meta.id;meta.mainnullableRAJ2000Right Ascension (J2000) (ra)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) (dec)degpos.eq.dec;meta.mainKradKron radius in the HSC i band (i_kronflux_radius)instr.bandpassdoublePstrongZoobot Strong bar probability (P_Strongbar_)stat.fit.goodnessdoublePweakZoobot Weak bar probability (P_Weakbar_)stat.fit.goodnessdoublePunbarZoobot Unbarred disc probability (P_Unbardisc_)stat.fit.goodnessdoublePellZoobot Smooth/Elliptical probability (P_Elliptical_)stat.fit.goodnessdoublePedgonZoobot Edge-on probability (P_Edge-on_)stat.fit.goodnessdoublePbarTotal Zoobot bar probability (P_Bar_)stat.fit.goodnessdoubleClassMost likely class number (ClassNumber) (1)meta.code.classintLabelMost likely class label (Label)meta.code.classchar