Recent star formation history of the Magellanic Clouds
G. Indu and A. Subramaniam
Indian Institute of Astrophysics, Bangalore
E-mail: indu@iiap.res.in

Abstract. The details of recent interactions between the Large and the Small Magellanic Clouds (LMC and SMC) can be understood by studying their recent star formation history. This study aims to detect any directional or propagating star formation in the last 100 Myrs in the Clouds. We traced the age of the last star formation event (LSFE) in the inner LMC/SMC using the photometric data in V and I pass bands from the Optical Gravitational Lensing Experiment (OGLE-III) and the Magellanic Cloud Photometric Survey (MCPS). The age of the LSFE in a given sub-region corresponds to the main-sequence turn off point in the colour-magnitude diagram (CMD). After correcting for extinction, the obtained turn off magnitude is converted to age, which represents the (LSFE) in a region. In this study, we do not see any signature of directional propagation of star formation, but we find a radially inward propagation of star formation in both the Clouds. The recent star formation is more in the northern LMC, when compared to the southern LMC, suggestive of gas available in this region for star formation. We have estimated the density distribution of main sequence stars in the LMC, with different age cut-offs. The centroid of each of the distributions is also calculated. We find a shift of center towards the north-east of LMC. The above two features are probably due to tidal effect of the Galaxy on the gas present in the LMC.