On the Progenitor of SN 2005gl and the Nature of Type IIn Supernovae

  title={On the Progenitor of SN 2005gl and the Nature of Type IIn Supernovae},
  author={Avishay Gal-yam and Douglas C. Leonard and Derek B. Fox and S. Bradley Cenko and Alicia Margarita Soderberg and Dae-Sik Moon and David J. Sand and W. D. Li and Alexei V. Filippenko and Gregory S. Aldering and Y. Copin},
  journal={The Astrophysical Journal},
We present a study of the Type IIn supernova (SN) 2005gl, in the relatively nearby (d ≈ 66 Mpc) galaxy NGC 266. Photometry and spectroscopy of the SN indicate that it is a typical member of its class. Pre-explosion Hubble Space Telescope (HST) imaging of the location of the SN, along with a precise localization of this event using the laser guide star assisted adaptive optics (LGS-AO) system at Keck Observatory, are combined to identify a luminous (M_V = -10.3 mag) point source as the possible… 

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