SN 2008S: A COOL SUPER-EDDINGTON WIND IN A SUPERNOVA IMPOSTOR

@article{Smith2009SN2A,
  title={SN 2008S: A COOL SUPER-EDDINGTON WIND IN A SUPERNOVA IMPOSTOR},
  author={Nathan Smith and Mohan Ganeshalingam and Ryan Chornock and Alexei V. Filippenko and Weidong Li and Jeffrey M. Silverman and Thea N. Steele and Christopher V. Griffith and Niels Joubert and Nicholas Lee and Thomas B Lowe and Martin Mobberley and D. Winslow},
  journal={The Astrophysical Journal},
  year={2009},
  volume={697},
  pages={L49 - L53}
}
We present visual-wavelength photometry and spectroscopy of supernova (SN) 2008S. Based on the low peak luminosity for a SN of MR = −13.9 mag, photometric and spectral evolution unlike that of low-luminosity SNe, a late-time decline rate slower than 56Co decay, and slow outflow speeds of 600–1000 km s−1, we conclude that SN 2008S is not a true core-collapse SN and is probably not an electron-capture SN. Instead, we show that SN 2008S more closely resembles an “SN impostor” event like SN 1997bs… 

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