Pan-STARRS1 Discovery of Two Ultraluminous Supernovae at z ≈ 0.9

@article{Chomiuk2011PanSTARRS1DO,
  title={Pan-STARRS1 Discovery of Two Ultraluminous Supernovae at z ≈ 0.9},
  author={L. Chomiuk and R. Chornock and A. Soderberg and E. Berger and R. Chevalier and R. Foley and M. Huber and G. Narayan and A. Rest and S. Gezari and R. Kirshner and A. Riess and S. Rodney and S. Smartt and C. Stubbs and J. Tonry and W. Wood-Vasey and W. Burgett and K. Chambers and I. Czekala and H. Flewelling and K. Forster and N. Kaiser and R. Kudritzki and E. Magnier and D. C. Martin and J. Morgan and J. Neill and P. Price and K. Roth and N. Sanders and R. Wainscoat},
  journal={The Astrophysical Journal},
  year={2011},
  volume={743},
  pages={114}
}
We present the discovery of two ultraluminous supernovae (SNe) at z ≈ 0.9 with the Pan-STARRS1 Medium Deep Survey. These SNe, PS1-10ky and PS1-10awh, are among the most luminous SNe ever discovered, comparable to the unusual transients SN 2005ap and SCP 06F6. Like SN 2005ap and SCP 06F6, they show characteristic high luminosities (M_(bol) ≈ –22.5 mag), blue spectra with a few broad absorption lines, and no evidence for H or He. We have constructed a full multi-color light curve sensitive to the… Expand
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