Program: GS-2019B-FT-109

FU Ori objects (FUors) are a class of eruptive young stellar objects (YSOs). They are characterized by a large, long-lived burst caused by enhanced accretion onto protostellar disks. To understand this episodic accretion process has important implications on star and planet formation, but the known FUor population is very small (~ a dozen). We have discovered a YSO eruption event in our Gemini/GSAOI observation in March 2019. The object of interest (Var1) has brightened by 3.5 mag in Ks band from 2011. Further analysis sugguests that Var1 is a promising FUor candidate with the lowest known stellar mass. Therefore, Var1 provides a rare opportunity to characterize a very low mass FUor in its eruption stage. Here we propose to follow up with near-IR imaging using Gemini/Flamingos2 to determine its eruption phase. The updated magnitude will be essential to guide future spectroscopic observations.