論文

査読有り
2019年4月10日

SN 2017czd: A Rapidly Evolving Supernova from a Weak Explosion of a Type IIb Supernova Progenitor

ASTROPHYSICAL JOURNAL
  • Nakaoka, Tatsuya
  • Moriya
  • Takashi J
  • Tanaka, Masaomi
  • Yamanaka, Masayuki
  • Kawabata
  • Koji S
  • Maeda, Keiichi
  • Kawabata, Miho
  • Kawahara, Naoki
  • Itagaki, Koichi
  • Ouchi, Ryoma
  • Blinnikov
  • Sergei I
  • Tominaga, Nozomu
  • Uemura, Makoto
  • 全て表示

875
1
開始ページ
76
終了ページ
76
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.3847/1538-4357/ab0dfe
出版者・発行元
IOP PUBLISHING LTD

We present optical and near-infrared observations of the rapidly evolving supernova (SN) 2017czd that shows hydrogen features. The optical light curves exhibit a short plateau phase (similar to 13 days in the R-band) followed by a rapid decline by 4.5 mag similar to 20 days after the plateau. The decline rate is larger than those of any standard SNe, and close to those of rapidly evolving transients. The peak absolute magnitude is -16.8 mag in the V band, which is within the observed range for SNe IIP and rapidly evolving transients. The spectra of SN. 2017czd clearly show the hydrogen features and resemble those of SNe IIP at first. The H alpha line, however, does not evolve much with time, and it becomes similar to those in SNe IIb at the decline phase. We calculate the synthetic light curves using a SN IIb progenitor that has 16 M-circle dot at the zero-age main sequence and evolves into a binary system. The model with a low explosion energy (5 x 10(50) erg) and a low Ni-56 mass (0.003 M-circle dot) can reproduce the short plateau phase, as well as the sudden drop of the light curve, as observed in SN 2017czd. We conclude that SN 2017czd might be the first weak explosion identif

リンク情報
DOI
https://doi.org/10.3847/1538-4357/ab0dfe
URL
https://iopscience.iop.org/article/10.3847/1538-4357/ab0dfe/pdf
URL
https://iopscience.iop.org/article/10.3847/1538-4357/ab0dfe
ID情報
  • DOI : 10.3847/1538-4357/ab0dfe
  • ISSN : 0004-637X
  • eISSN : 1538-4357

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