Search for intrinsic variable stars in three open clusters: NGC 1664, NGC 6811 and NGC 7209

Abstract

We report on new time-series CCD observations for three poorly studied open clusters from the STACC list. The collected light curves in the V lter of a large number of stars per eld have been examined in detail in search for shortperiodic variable stars. In particular we looked for new Scuti-type candidates. First results for the open clusters NGC 1664, NGC 6811 and NGC 7209 are presented.