{"paper":{"title":"Nearby Supernova Factory Observations of SN 2005gj: Another Type Ia Supernova in a Massive Circumstellar Envelope","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Bauer, B. A. Weaver, B. C. Lee, C. Baltay, D. Kocevski, D. Rabinowitz, E. Gangler, E. Pecontal, G. Rigaudier, G. Smadja, L. Wang, N. Blanc, P. Antilogus, P. Nugent, R. C. Thomas, R. Kessler, R. Pain, R. Pereira, R. Scalzo, S. Bailey, S. Bongard, S. Gilles, S. Loken, S. Perlmutter, The Nearby Supernova Factory Collaboration: G. Aldering, Y. Copin","submitted_at":"2006-06-20T21:28:11Z","abstract_excerpt":"We report Nearby Supernova Factory observations of SN 2005gj, the second confirmed case of a \"hybrid\" Type Ia/IIn supernova. Our early-phase photometry of SN 2005gj shows that the interaction is much stronger than for the prototype, SN 2002ic. Our first spectrum shows a hot continuum with broad and narrow H-alpha emission. Later spectra, spanning over 4 months from outburst, show clear Type Ia features combined with broad and narrow H-gamma, H-beta, H-alpha and HeI 5876,7065 in emission. At higher resolution, P Cygni profiles are apparent. Surprisingly, we also observe an inverted P Cygni prof"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0606499","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"}