{"paper":{"title":"A luminous stellar outburst during a long-lasting eruptive phase first, and then SN IIn 2018cnf","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"A. de Ugarte Postigo, A. Morales-Garoffolo, A. Pastorello, A. Reguitti, C. Ashall, C. C. Thoene, C. Inserra, C. McCully, C. Waters, D. A. Howell, D. A. Kann, D. E. Wright, D. Hiramatsu, D. R. Young, E. A. Magnier, E. Callis, E. Congiu, E. Kankare, E. Mason, E. Y. Hsiao, G. Hosseinzadeh, G. Pignata, I. Arcavi, J. Burke, K. W. Smith, L. Tartaglia, L. Tomasella, L. Wang, M. Fraser, M. Gromadzki, M. L. Pumo, M. M. Phillips, O. Rodriguez, P. A. Mazzali, Ping Chen, P. Ochner, R. J. Wainscoat, R. Kotak, S. Bose, S. Geier, S. J. Prentice, S. J. Smartt, S. Kumar, Subo Dong, T. B. Lowe, T. Reynolds, T. Wevers, Z. Cano","submitted_at":"2019-06-03T13:48:08Z","abstract_excerpt":"We present the results of the monitoring campaign of the Type IIn supernova (SN) 2018cnf (aka ASASSN-18mr). It was discovered about 10 days before the maximum light (on MJD = 58293.4+-5.7 in the V band, with MV = -18.13+-0.15 mag). The multiband light curves show an immediate post-peak decline with some minor luminosity fluctuations, followed by a flattening starting about 40 days after maximum. The early spectra are relatively blue and show narrow Balmer lines with P Cygni profiles. Additionally, Fe II, O I, He I and Ca II are detected. The spectra show little evolution with time, with interm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.00814","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1906.00814/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}