IAUS379: Dynamical Masses of Local Group Galaxies

I present work on a spatially resolved, global star-formation history (SFH) of the Small Magellanic Cloud (SMC). I use the unprecedented deep photometric data (g~24 magnitude) from the Survey of the MAgellanic Stellar History (SMASH) survey utilising the Dark Energy Camera (DECAm) on the NOAO Blanco 4 m Telescope. The SFH is quantitatively obtained using colour-magnitude diagram (CMD) fitting techniques. For the first time, optical depth effects along the SMC's line-of-sight are considered in the SFHs derived.

I focus on the SFH of a shell-like structure located in the northeastern part of the SMC. I compare this SFH to the SFHs of several SMC regions. I discuss the results of such comparison with a focus on whether the recent and high star formation activity in the shell-like structure is correlated with the enhancements of star formation at young ages in the SMC. Finally, I put my results in the context of the tidal interactions between the SMC and its larger companion, the Large Magellanic Cloud (LMC) to shed light on the origins of the shell-like feature.