Optical and Near‐Infrared Photometry of the Type Ia Supernova 2000E in NGC 6951

Abstract

We present optical and near-infrared photometry, along with optical spectra,\nof the Type Ia supernova SN 2000E in the spiral galaxy NGC 6951. It was\ndiscovered by the staff of the Teramo Observatory during the monitoring of the\nSN 1999el. The observations span a time interval of 234 days in the optical and\n134 days in the near-infrared (starting 16 days and 7 days before maximum B\nlight, respectively). Optical spectra are available from 6 days before maximum\nB light to 122 days after it. SN 2000E exhibits a Dm15(B) = 0.94, thus being\nclassifiable as a slow-declining Type Ia SN and showing the distinctive\nfeatures of such a class of objects. Spectroscopically, SN 2000E appears as a\nnormal Type Ia SN, like SN 1990N. We could constrain reddening [E(B-V) ~0.5\nmag] and distance (mu0 ~32.14 mag) using a number of different methods. The\nbolometric luminosity curve of SN 2000E, allows a determination of the Ni56\nmass amounting to 0.9Msun.\n