{"paper":{"title":"A very dark stellar system lost in Virgo: kinematics and metallicity of SECCO1 with MUSE","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"(10) STScI), (2) INAF-OABO, (3) INAF-OAAr, (4) DIFA-UNIBo, 5), (5) Leiden Obs., (6) Obs. Strasbourg, (7) IAC, 8), (8) MPIA, (9) INAF-OARo, B. Husemann (1), F. Fraternali (4), G. Battaglia (7), G.Beccari (1), G. Cresci (3), L. Coccato (1), L.Magrini (3), M.Bellazzini (2), M. Correnti (10) ((1) ESO, N. Martin (6, P.T. de Zeeuw (1, R. Ibata (6), S. Perina (2), V. Testa (9)","submitted_at":"2016-11-09T10:14:35Z","abstract_excerpt":"We present the results of VLT-MUSE integral field spectroscopy of SECCO1, a faint, star-forming stellar system recently discovered as the stellar counterpart of an Ultra Compact High Velocity Cloud (HVC274.68+74.0), very likely residing within a substructure of the Virgo cluster of galaxies. We have obtained the radial velocity of a total of 38 individual compact sources identified as HII regions in the main and secondary body of the system, and derived the metallicity for 18 of them. We provide the first direct demonstration that the two stellar bodies of SECCO1 are physically associated and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.02876","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"}