THE SUPERNOVA IMPOSTOR PSN J09132750+7627410 AND ITS PROGENITOR
THE SUPERNOVA IMPOSTOR PSN J09132750+7627410 AND ITS PROGENITOR
We report the results of our follow-up campaign of the supernova impostor PSN J09132750+7627410, based on optical data covering $\sim250\,\rm{d}$. From the beginning, the transient shows prominent narrow Balmer lines with P-Cygni profiles, with a blue-shifted absorption component becoming more prominent with time. Along the $\sim3\,\rm{months}$ of the spectroscopic monitoring, …