Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-08-21
Mon.Not.Roy.Astron.Soc.372:1315-1324,2006
Astronomy and Astrophysics
Astrophysics
26 pages, 11 figures, accepted for publication in MNRAS
Scientific paper
10.1111/j.1365-2966.2006.10937.x
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$\alpha$ luminosity in the nebular phase indicate that $0.06\pm0.02{M_\odot}$ 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 $E_{\rm{exp}}= 1.20^{+0.38}_{-0.30} \times 10^{51}$ ergs. The late time light curve and the evolution of the [OI] and H$\alpha$ emission line profiles indicate the possibility of an early dust formation in the supernova ejecta. The luminosity of [OI] 6300, 6364 \AA doublet, 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 $1.5 - 2{M_\odot}$, and a main sequence mass of $20{M_\odot}$ for the progenitor.
Anupama G. C.
Muneer S.
Sahu Devendra K.
Srividya S.
No associations
LandOfFree
Photometric and spectroscopic evolution of the type IIP supernova SN 2004et does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Photometric and spectroscopic evolution of the type IIP supernova SN 2004et, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometric and spectroscopic evolution of the type IIP supernova SN 2004et will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-666884