{"paper":{"title":"Optical observations of type IIP supernova 2004dj: Evidence for the asymmetry of $^{56}$Ni ejecta","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"N.N. Chugai, O.N. Sholukhova, P.K. Abolmasov, S.N. Fabrika, V.P. Goranskij, V.V. Vlasyuk","submitted_at":"2005-07-29T08:00:57Z","abstract_excerpt":"The photometric and spectroscopic observations of nearby type IIP supernova 2004dj are presented. The $^{56}$Ni mass estimated from the light curve is $\\approx0.02 M_{\\odot}$. This estimate is found to be consistent with the H$\\alpha$ luminosity. SN2004dj reveals a strong asymmetry of the H$\\alpha$ emission line at the nebular epoch with the shift of the maximum of -1600 km s$^{-1}$. A similar asymmetric component is detected in H$\\beta$, [O I] and [Ca II] lines. The line asymmetry is interpreted as a result of the asymmetry of $^{56}$Ni ejecta. The H$\\alpha$ profile and its evolution are repr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0507689","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0507689/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"}