{"paper":{"title":"Two Type Ic supernovae in low-metallicity, dwarf galaxies: diversity of explosions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"(2) INAF-OAPD Padova, (3) Isaac Newton Group of Telescopes, (4) Liverpool John Moores University, 5), (5) Charles University, (6) University of Turku, (7) Leiden University, (8) University of Leicester), A. H. Harutyunyan (2), A. Pastorello (1), C. R. Benn (3), D. Bersier (4), D. R. Young (1), E. J. W. de Mooij (7), H. Navasardyan (2), I. A. G. Snellen (7), I. Hunter (1), L. Zampieri (2) ((1) Queen's University Belfast, M. Hrudkova (3, M. T. Botticella (1), N. R. Tanvir (8), R. L. M. Corradi (3), S. Benetti (2), S. J. Smartt (1), S. Mattila (6), S. Valenti (1)","submitted_at":"2009-10-12T21:09:27Z","abstract_excerpt":"We present BVRI photometry and optical spectroscopy of two Type Ic supernovae SN 2007bg and SN 2007bi discovered in wide-field, non-targeted surveys and associated with sub-luminous blue dwarf galaxies. Neither SNe 2007bg nor 2007bi were found in association with an observed GRB, but are found to inhabit similar low-metallicity environments as GRB associated supernovae. The radio-bright SN 2007bg is hosted by an extremely sub-luminous galaxy of magnitude MB = -12.4+/-0.6 mag with an estimated oxygen abundance of 12+log(O/H) = 8.18+/-0.17. The lightcurve of SN 2007bg displays one of the fastest"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.2248","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"}