Program: GN-2020A-Q-305

We propose to continue our program to observe groups of extremely blue dwarf galaxies, which serve as laboratories to study interactions and mergers between these systems. These processes, which are mostly gas-rich and should be marked by an intense star formation (SF) activity, are expected to be common at earlier times but are very rare at low redshifts. Using the SDSS data, we identified 24 candidates of groups of extremely blue dwarf galaxies that might provide a window into these rare events. Four of these groups were observed with GMOS during the period 2018A, and three of them were confirmed to be groups with at least three members and sigma between 30 and 70 km/s. To continue our program using GMOS multi-object spectroscopy, we selected 8 group candidates that are suitable to be observed during period 2020A to (i) confirm the group membership, (ii) determine the stellar population properties, sSFRs, and metallicities of the member galaxies, and (iii) study the dynamics of these systems. Our final goal is to investigate the tidal triggering of the SF in low-mass galaxies, as well as the buildup of stellar mass and the hierarchical assembly of galaxies at low to intermediate stellar masses.