{"paper":{"title":"X-ray nuclear activity in S4G barred galaxies: No link between bar strength and co-occurrent supermassive black hole fueling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Albert Bosma, Armando Gil de Paz, Benne W. Holwerda, Bruce G. Elmegreen, Dennis Zaritsky, Dimitri Gadotti, E. Athanassoula, Eija Laurikainen, Heikki Salo, Jarkko Laine, Joannah L. Hinz, Johan H. Knapen, Juan-Carlos Mu\\~noz-Mateos, Kar\\'in Men\\'endez-Delmestre, Kartik Sheth, Luis C. Ho, Mark Seibert, Mauricio Cisternas, Michael Regan, Omaira Gonz\\'alez-Mart\\'in, Santiago Erroz-Ferrer, S\\'ebastien Comer\\'on, Sharon Meidt, Sim\\'on D\\'iaz-Garc\\'ia, Taehyun Kim, Trisha Mizusawa","submitted_at":"2013-07-29T20:00:00Z","abstract_excerpt":"Stellar bars can lead to gas inflow toward the center of a galaxy and stimulate nuclear star formation. However, there is no compelling evidence on whether they also feed a central supermassive black hole: by measuring the fractions of barred active and inactive galaxies, previous studies have yielded conflicting results. In this paper, we aim to understand the lack of observational evidence for bar-driven active galactic nucleus (AGN) activity by studying a sample of 41 nearby (d < 35 Mpc) barred galaxies from the Spitzer Survey for Stellar Structure in Galaxies. We use Chandra observations t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.7709","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}