{
  "id": "2011.09499",
  "version": "v1",
  "published": "2020-11-18T19:08:13.000Z",
  "updated": "2020-11-18T19:08:13.000Z",
  "title": "Testing Progenitor Models Using the Late-Time Light Curve of Supernova 1992A",
  "authors": [
    "Cian Roche",
    "Peter Garnavich"
  ],
  "comment": "5 pages, 1 figure. Accepted by RNAAS on 17/11/2020",
  "categories": [
    "astro-ph.SR",
    "astro-ph.HE"
  ],
  "abstract": "The dominant radioactive energy source powering Type Ia supernova light curves is expected to switch from the decay of $^{56}$Co to $^{57}$Co at very late epochs. We use archival HST images of SN1992A obtained more than 900 days after explosion to constrain its cobalt isotopic abundance ratio and compare it to the well-studied event SN2011fe. We confirm the $^{57}$Co / $^{56}$Co ratio for SN2011fe of $0.026\\pm 0.004$ found by arXiv:1608.01155, consistent with a \"double degenerate\" progenitor scenario. For SN1992A, we find a ratio of $0.034\\pm 0.010$, but the large uncertainty does not allow us to differentiate between progenitor models",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-11-18T19:08:13.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "late-time light curve",
      "testing progenitor models",
      "ia supernova light curves",
      "supernova 1992a",
      "type ia supernova light"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}