{"paper":{"title":"Optical observations of the fast declining type Ib supernova iPTF13bvn","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"D. K. Sahu, G. C. Anupama, Shubham Srivastav","submitted_at":"2014-09-09T13:54:47Z","abstract_excerpt":"We present optical UBVRI photometry and medium resolution spectroscopy of the type Ib supernova iPTF13bvn, spanning a phase of $\\sim$ $-13\\,$d to $+71\\,$d with respect to $B$-band maximum. The post maximum decline rates indicate a fast decline with $\\Delta m_{15}(B) = 1.82$. Correcting for a galactic extinction $E(B-V){\\rm_{MW}}=0.045$ and host galaxy extinction of $E(B-V){\\rm_{host}}=0.17$, the absolute $V$-band magnitude peaks at M$_V=-17.23\\, \\pm \\,0.20$. The bolometric light curve indicates that $\\sim 0.09$ M$_{\\odot}$ of $^{56}$Ni was synthesized in the explosion. The earliest spectrum ($"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.2739","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"}