SN 2016iog light curves

SN 2016iog reached its peak ~14 days after explosion, with an absolute magnitude in the V band of -18.64+/-0.15mag, followed by a steep decline of 8.85+/-0.15mag(100d)^-1^ post-peak. Such a high decline rate makes SN 2016iog one of the fastest declining Type IIL SNe observed to date.

The rapid rise in the light curve, combined with the nearly featureless continuum observed in the spectrum at +9.3days, suggests the presence of interaction.In the recombination phase, we observed broad Halpha lines that persist at all epochs. In addition, the prominent double-peaked Halpha feature observed in the late-time spectrum (+190.8days) is likely attributable either to significant dust formation within a cool dense shell or to asymmetric circumstellar material.