{"paper":{"title":"Massive stars exploding in a He-rich circumstellar medium. V. Observations of the slow-evolving SN Ibn OGLE-2012-SN-006","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Gal-Yam, A. Morales-Garoffolo, A. Pastorello, A. Rau, A. Udalski, C. Inserra, D. A. Howell, D. R. Young, E. Cappellaro, G. Fasano, G. Pietrzynski, I. Soszynski, J. Greiner, J. L. Prieto, J. P. Anderson, J. Parrent, J. Skowron, K. Ulaczyk, K. W. Smith, L. Wyrzykowski, M. Bersten, M. Fraser, M. Gillone, M. K. Szymanski, M. Kubiak, M. L. Graham, M. T. Botticella, M. Turatto, N. Elias-Rosa, O. Yaron, P. Mroz, P. Pietrukowicz, R. Poleski, S. Benetti, S. Hachinger, S. J. Smartt, S. Kozlowski, S. Schulze, S. Valenti","submitted_at":"2015-02-17T16:12:41Z","abstract_excerpt":"We present optical observations of the peculiar Type Ibn supernova (SN Ibn) OGLE-2012-SN-006, discovered and monitored by the OGLE-IV survey, and spectroscopically followed by PESSTO at late phases. Stringent pre-discovery limits constrain the explosion epoch with fair precision to JD = 2456203.8 +- 4.0. The rise time to the I-band light curve maximum is about two weeks. The object reaches the peak absolute magnitude M(I) = -19.65 +- 0.19 on JD = 2456218.1 +- 1.8. After maximum, the light curve declines for about 25 days with a rate of 4 mag per 100d. The symmetric I-band peak resembles that o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.04945","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"}