New Variables in 3 Galactic open clusters

The search is performed using photometric NIR data in the J-, H- and Ks - bands obtained from the Vista Variables in the Via Lactea (VVV) Survey. We performed in each cluster field a variability search using Stetson's variability statistics to select the variable candidates.

Later, those candidates were subjected to a frequency analysis using the Generalized Lomb-Scargle and the Phase Dispersion Minimization algorithms. The number of independent observations range between 63 and 73. The newly discovered variables in this study, 157 in total in three different known OCs, are classified based on their light curve shapes, periods, amplitudes and their location in the corresponding color-magnitude (J-Ks,Ks)(J-Ks,Ks) and color-color (H-Ks,J-H)(H-Ks,J-H) diagrams.