The rise and fall of type Ia supernova light curves in the SDSS-II supernova survey

  title={The rise and fall of type Ia supernova light curves in the SDSS-II supernova survey},
  author={B. Hayden and Peter Garnavich and Richard Kessler and Joshua A. Frieman and Saurabh W. Jha and David Anthony Cinabro and Benjamin E. P. Dilday and Daniel N. Kasen and John P. Marriner and Robert Nichol and Adam G. Riess and Masao Sako and Donald P. Schneider and Mathew Smith and Jesper Sollerman and Bruce A. Bassett},
  journal={The Astrophysical Journal},
We analyze the rise and fall times of Type Ia supernova (SN Ia) light curves discovered by the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey. From a set of 391 light curves k-corrected to the rest-frame B and V bands, we find a smaller dispersion in the rising portion of the light curve compared to the decline. This is in qualitative agreement with computer models which predict that variations in radioactive nickel yield have less impact on the rise than on the spread of the decline… Expand
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