{"paper":{"title":"Spectroscopy of NGC 4258 globular cluster candidates: membership confirmation and kinematics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Ariane Lancon, George Heald, Gustavo Bruzual, Iskren Y. Georgiev, Karla \\'Alamo-Mart\\'inez, Laurent Loinard, Luis Lomel\\'i-N\\'u\\~nez, Maritza A. Lara-L\\'opez, Rosa A. Gonzal\\'ez-L\\'opezlira, Thomas H. Puzia, Yasna \\'Ordenes-Brice\\~no, Y.D. Mayya","submitted_at":"2019-04-04T17:58:02Z","abstract_excerpt":"We present multi-object spectroscopic observations of 23 globular cluster candidates (GCCs) in the prototypical megamaser galaxy NGC 4258, carried out with the OSIRIS instrument at the 10.4 m Gran Telescopio Canarias. The candidates have been selected based on the ($u^*\\ -\\ i^\\prime$) versus ($i^\\prime\\ -\\ K_s$) diagram, in the first application of the uiks-method to a spiral galaxy. In the spectroscopy presented here, 70% of the candidates are confirmed as globular clusters. Our results validate the efficiency of the uiks-method in the sparser GC systems of spirals, and given the downward cor"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.02712","kind":"arxiv","version":2},"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"}