SN 2020jfo: A Short-plateau Type II Supernova from a Low-mass Progenitor

We present spectroscopic and photometric observations of the Type IIP supernova, SN 2020jfo, in ultraviolet optical wavelengths. 2020jfo occurred spiral galaxy M61 (NGC 4303), with eight observed supernovae past 100 years. exhibited a short plateau lasting < 65 d, achieved maximum brightness V-band $M_V$ = -17.4 $\pm$ 0.4 mag at about 8.0 0.5 d since explosion. From bolometric light curve, we have estimated mass $^{56}$Ni synthesised explosion to be 0.033 0.006 $M_\odot$. The spectral features are typical for type supernova except shallow H$\alpha$ absorption throughout evolution presence stable $^{58}$Ni feature 7378 \r{A}, nebular phase. Using hydrodynamical modelling MESA + STELLA framework, an ejecta ~ 5 $M_\odot$ is estimated. Models also indicate could result Red Super Giant progenitor $M_{ZAMS}$ 12 Bolometric curve revealed secondary radiation source initial 20 which has been attributed interaction circumstellar material 0.2 $M_\odot$, most likely was ejected due enhanced loss years prior