Photometric and spectroscopic evolution of the type IIP supernova SN 2004et

D. K. Sahu; G. C. Anupama; S. Srividya; S. Muneer

doi:10.1111/j.1365-2966.2006.10937.x

paper

Photometric and spectroscopic evolution of the type IIP supernova SN 2004et

arXiv:astro-ph/0608432 · doi:10.1111/j.1365-2966.2006.10937.x

Abstract

We present optical photometry and spectroscopy of the type IIP supernova SN 2004et that occurred in the nearby galaxy NGC 6946. The observations span a time range of 8 days to 541 days after explosion. The late time bolometric luminosity and the H $α$ luminosity in the nebular phase indicate that $0.06 \pm 0.02 M_{⊙}$ of $^{56}$ Ni was synthesised during the explosion. The plateau luminosity, its duration and the expansion velocity of the supernova at the middle of the plateau indicate an explosion energy of $E_{exp} = 1.2 0_{- 0.30}^{+ 0.38} \times 1 0^{51}$ ergs. The late time light curve and the evolution of the [OI] and H $α$ emission line profiles indicate the possibility of an early dust formation in the supernova ejecta. The luminosity of [OI] 6300, 6364 Ådoublet, before the dust formation phase, is found to be comparable to that of SN 1987A at similar epochs, impling an oxygen mass in the range $1.5 - 2 M_{⊙}$ , and a main sequence mass of $20 M_{⊙}$ for the progenitor.

26 pages, 11 figures, accepted for publication in MNRAS

References in corpus (1)

Towards a Cosmological Hubble Diagram for Type II-P Supernovae

Photometric and spectroscopic evolution of the type IIP supernova SN 2004et

Abstract

References in corpus (1)

Cited by in corpus (70)