• DOI:10.1093/mnras/stv759
• Corpus ID: 118758235

SN 2013ab : A normal type IIP supernova in NGC 5669

@article{Bose2015SN2,
  title={SN 2013ab : A normal type IIP supernova in NGC 5669},
  author={Subhash Bose and Stefano Valenti and Kuntal Misra and Maria Letizia Pumo and Luca Zampieri and David Sand and Brijesh Kumar and A. Pastorello and F. Sutaria and Thomas J. Maccarone and Brajesh Kumar and Melissa L. Graham and D. Andrew Howell and Paolo Ochner and Harish Chandra Chandola and Shashi Bhushan Pandey},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2015},
  volume={450},
  pages={2373-2392}
}

• S. Bose, S. Valenti, +13 authors S. Pandey
• Published 3 April 2015
• Physics
• Monthly Notices of the Royal Astronomical Society

We present densely-sampled ultraviolet/optical photometric and low-resolution optical spectroscopic observations of the type IIP supernova 2013ab in the nearby (�24 Mpc) galaxy NGC 5669, from 2 to 190d after explosion. Continuous photometric observations, with the cadence of typically a day to one week, were acquired with the 1-2m class telescopes in the LCOGT network, ARIES telescopes in India and various other telescopes around the globe. The light curve and spectra suggest that the SN is a normal type IIP event with a plateau duration of � 80 days with mid plateau absolute visual magnitude of -16.7, although with a steeper decline during the plateau (0.92 mag 100 d −1 in V band) relative to other archetypal SNe of similar brightness. The velocity profile of SN 2013ab shows striking resemblance with those of SNe 1999em and 2012aw. Following the Rabinak & Waxman (2011) prescription, the initial temperature evolution of the SN emission allows us to estimate the progenitor radius to be � 800 R⊙, indicating that the SN originated from a red supergiant star. The distance to the SN host galaxy is estimated to be 24.3 Mpc from expanding photosphere method (epm). From our observations, we estimate that 0.064 M⊙ of 56 Ni was synthesized in the explosion. General relativistic, radiation hydrodynamical modeling of the SN infers an explosion energy of 0.35 × 10 51 erg, a progenitor mass (at the time of explosion) of � 9 M⊙ and an initial radius of � 600 R⊙.