{
  "id": "1910.02968",
  "version": "v1",
  "published": "2019-10-07T18:00:05.000Z",
  "updated": "2019-10-07T18:00:05.000Z",
  "title": "Four (Super)Luminous Supernovae From the First Months of the ZTF Survey",
  "authors": [
    "R. Lunnan",
    "Lin Yan",
    "D. A. Perley",
    "S. Schulze",
    "K. Taggart",
    "A. Gal-Yam",
    "C. Fremling",
    "M. T. Soumagnac",
    "E. Ofek",
    "S. M. Adams",
    "C. Barbarino",
    "E. C. Bellm",
    "K. De",
    "C. Fransson",
    "S. Frederick",
    "V. Z. Golkhou",
    "M. J. Graham",
    "N. Hallakoun",
    "A. Y. Q. Ho",
    "M. M. Kasliwal",
    "S. Kaspi",
    "S. R. Kulkarni",
    "R. R. Laher",
    "F. J. Masci",
    "F. Pozo Nunez",
    "B. Rusholme",
    "R. M. Quimby",
    "D. L. Shupe",
    "J. Sollerman",
    "F. Taddia",
    "J. van Roestel",
    "Y. Yang",
    "Yuhan Yao"
  ],
  "comment": "Submitted to ApJ; comments welcome",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We present photometry and spectroscopy of four hydrogen-poor luminous supernovae discovered during the two-month science commissioning and early operations of the Zwicky Transient Facility (ZTF) survey. Three of these objects, SN2018bym (ZTF18aapgrxo), SN2018avk (ZTF18aaisyyp) and SN2018bgv (ZTF18aavrmcg) resemble typical SLSN-I spectroscopically, while SN2018don (ZTF18aajqcue) may be an object similar to SN2007bi experiencing considerable host galaxy reddening, or an intrinsically long-lived, luminous and red SN Ic. We analyze the light curves, spectra, and host galaxy properties of these four objects and put them in context of the population of SLSN-I. SN2018bgv stands out as the fastest-rising SLSN-I observed to date, with a rest-frame g-band rise time of just 10 days from explosion to peak -- if it is powered by magnetar spin-down, the implied ejecta mass is only ~1 M$_{\\odot}$. SN2018don also displays unusual properties -- in addition to its red colors and comparatively massive host galaxy, the light curve undergoes some of the strongest light curve undulations post-peak seen in a SLSN-I, which we speculate may be due to interaction with circumstellar material. We discuss the promises and challenges of finding SLSNe in large-scale surveys like ZTF given the observed diversity in the population.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-10-07T18:00:05.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "luminous supernovae",
      "ztf survey",
      "first months",
      "experiencing considerable host galaxy",
      "considerable host galaxy reddening"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}