{"paper":{"title":"Common Envelope ejection for a Luminous Red Nova in M101","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. M. Cody, A. Pastorello, C. Fremling, C. Gonzalez-Fernandez, E. Kankare, E. Magnier, F. J. Masci, F. Taddia, G. B. Doran, G. Terreran, I. Manulis, J. Harmanen, J. Jencson, J. Polshaw, J. Sollerman, K. Smith, L. Tomasella, M. Fraser, M. M. Kasliwal, M. Turatto, N. Blagorodnova, N. Elias-Rosa, P. Nugent, P. Ochner, P. Vreeswijk, P. Wozniak, R. Kotak, R.-P. Kudritzki, S. Mattila, S. R. Kulkarni, S. Zaggia, T. Reynolds, Y. Cao","submitted_at":"2016-07-27T20:00:19Z","abstract_excerpt":"We present the results of optical, near-infrared, and mid-infrared observations of M101 OT2015-1 (PSN J14021678+5426205), a luminous red transient in the Pinwheel galaxy (M101), spanning a total of 16 years. The lightcurve showed two distinct peaks with absolute magnitudes $M_r\\leq-12.4$ and $M_r \\simeq-12$, on 2014 November 11 and 2015 February 17, respectively. The spectral energy distributions during the second maximum show a cool outburst temperature of $\\approx$3700 K and low expansion velocities ($\\approx-$300 \\kms) for the H I, Ca II, Ba II and K I lines. From archival data spanning 15 "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.08248","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"}