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  • Foley, Ryan J. (author)

THE FIRST MAXIMUM-LIGHT ULTRAVIOLET THROUGH NEAR-INFRARED SPECTRUM OF A TYPE Ia SUPERNOVA

  • Article/chapterEnglish2012

Publisher, publication year, extent ...

  • 2012
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-80398
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-80398URI
  • https://doi.org/10.1088/2041-8205/753/1/L5DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • AuthorCount:24;
  • We present the first maximum-light ultraviolet (UV) through near-infrared (NIR) Type Ia supernova (SN Ia) spectrum. This spectrum of SN 2011iv was obtained nearly simultaneously by the Hubble Space Telescope at UV/optical wavelengths and the Magellan Baade telescope at NIR wavelengths. These data provide the opportunity to examine the entire maximum-light SN Ia spectral energy distribution. Since the UV region of an SN Ia spectrum is extremely sensitive to the composition of the outer layers of the explosion, which are transparent at longer wavelengths, this unprecedented spectrum can provide strong constraints on the composition of the SN ejecta, and similarly the SN explosion and progenitor system. SN 2011iv is spectroscopically normal, but has a relatively fast decline (Delta m(15)(B) = 1.69 +/- 0.05 mag). We compare SN 2011iv to other SNe Ia with UV spectra near maximum light and examine trends between UV spectral properties, light-curve shape, and ejecta velocity. We tentatively find that SNe with similar light-curve shapes but different ejecta velocities have similar UV spectra, while those with similar ejecta velocities but different light-curve shapes have very different UV spectra. Through a comparison with explosion models, we find that both a solar-metallicity W7 and a zero-metallicity delayed-detonation model provide a reasonable fit to the spectrum of SN 2011iv from the UV to the NIR.

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  • Kromer, Markus (author)
  • Marion, G. Howie (author)
  • Pignata, Giuliano (author)
  • Stritzinger, Maximilian D.Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC),Institutionen för astronomi (author)
  • Taubenberger, Stefan (author)
  • Challis, Peter (author)
  • Filippenko, Alexei V. (author)
  • Folatelli, Gaston (author)
  • Hillebrandt, Wolfgang (author)
  • Hsiao, Eric Y. (author)
  • Kirshner, Robert P. (author)
  • Li, Weidong (author)
  • Morrell, Nidia I. (author)
  • Roepke, Friedrich K. (author)
  • Ciaraldi-Schoolmann, Franco (author)
  • Seitenzahl, Ivo R. (author)
  • Silverman, Jeffrey M. (author)
  • Simcoe, Robert A. (author)
  • Berta, Zachory K. (author)
  • Ivarsen, Kevin M. (author)
  • Newton, Elisabeth R. (author)
  • Nysewander, Melissa C. (author)
  • Reichart, Daniel E. (author)
  • Stockholms universitetOskar Klein-centrum för kosmopartikelfysik (OKC) (creator_code:org_t)

Related titles

  • In:THE ASTROPHYSICAL JOURNAL LETTERS753:1, s. L5-2041-8205

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