Optical Light Curves of the Type Ia Supernovae SN 1990N and SN 1991T

  title={Optical Light Curves of the Type Ia Supernovae SN 1990N and SN 1991T},
  author={Paulina Lira and Nicholas B. Suntzeff and Mark M. Phillips and Mario Hamuy and Jose Manuel Campillos Maza and Robert A. Schommer and R. C. Smith and Lisa A. Wells and Roberto Avil{\'e}s and Jack A. Baldwin and J. H. Elias and Luis E. Gonzalez and Andrew C. Layden and Mauricio Navarrete and P. P. Ugarte and Alistair R. Walker and Gerard M. Williger and Frederick K. Baganoff and Arlin P. S. Crotts and Robert Michael Rich and Neil de Grasse Tyson and Arjun Dey and Puragra Guhathakurta and John E. Hibbard and Y.-C. Kim and Daniel M. Rehner and E. D. Siciliano and Joshua Roth and Patrick Seitzer and Ted B. Williams},
  journal={The Astronomical Journal},
  pages={234 - 246}
We present UBVRI light curves for the bright Type Ia supernovae SN 1990N in NGC 4639 and SN 1991T in NGC 4527, based on photometry gathered in the course of the Calán/Tololo supernova program. Both objects have well-sampled light curves starting several days before maximum light and spanning well through the exponential tail. These data supersede the preliminary photometry published by Leibundgut et al. and Phillips et al. The host galaxies for these supernovae have (or will have) accurate… 

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