{"paper":{"title":"Dead or Alive? Long-term evolution of SN 2015bh (SNhunt275)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"A. Dimai, A. Morales-Garoffolo, A. Pastorello, C. J. Gerhartz, D. K. Sahu, D. Milisavljevic, D. Patnaude, 'E. Artigau, E. Cappellaro, F. Briganti, F. Ciabattari, F. Martinelli, G. C. Anupama, G. Cortini, G. Terreran, J. Harmanen, J. Polshaw, K. Itagaki, K. Misra, K. S. Bjorkman, L. Tartaglia, L. Tomasella, M. Berton, M. Dennefeld, M. Fraser, M. Turatto, N. D. Richardson, N. Elias-Rosa, P. J. Brown, P. Ochner, R. Arbour, R. Chornock, R. Kotak, R. Mancini, R. Margutti, S. Benetti, S. J. Smartt, S. Taubenberger, S. Zaggia, T. Boles","submitted_at":"2016-06-29T09:53:03Z","abstract_excerpt":"Supernova (SN) 2015bh (or SNhunt275) was discovered in NGC 2770 on 2015 February with an absolute magnitude of Mr ~ -13.4 mag, and was initially classified as a SN impostor. Here we present the photometric and spectroscopic evolution of SN 2015bh from discovery to late phases (~ 1 yr after). In addition, we inspect archival images of the host galaxy up to ~ 21 yr before discovery, finding a burst ~ 1 yr before discovery, and further signatures of stellar instability until late 2014. Later on, the luminosity of the transient slowly increases, and a broad light curve peak is reached after about "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.09024","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"}