{"paper":{"title":"Arm and interarm abundance gradients in CALIFA spiral galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. de Lorenzo-C\\'aceres, \\'A.R. L\\'opez-S\\'anchez, C. Catal\\'an-Torrecilla, C.J. Walcher, C. Kehrig, D.H. McIntosh, D. Mast, E. Florido, I. M\\'arquez, I. P\\'erez, J. Bland-Hawthorn, J. M\\'endez-Abreu, L. Costantin, L. Galbany, L. S\\'anchez-Menguiano, M. Cano-D\\'iaz, M. Moll\\'a, O. Cavichia, P. S\\'anchez-Bl\\'azquez, R.A. Marino, R. Garc\\'ia-Benito, R.M. G\\'onzalez Delgado, S.F. S\\'anchez, T. Ruiz-Lara, V.P. Debattista, Y. Ascasibar","submitted_at":"2017-05-16T14:41:53Z","abstract_excerpt":"Spiral arms are the most singular features in disc galaxies. These structures can exhibit different patterns, namely grand design and flocculent arms, with easily distinguishable characteristics. However, their origin and the mechanisms shaping them are unclear. The overall role of spirals in the chemical evolution of disc galaxies is another unsolved question. In particular, it has not been fully explored if the \\hii\\,regions of spiral arms present different properties from those located in the interarm regions. Here we analyse the radial oxygen abundance gradient of the arm and interarm star"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.05733","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"}