Automated Extended Aperture Photometry of K2 Variable Stars

Abstract Proper photometric data are challenging to obtain in the K2 mission of Kepler space telescope due strong systematics caused by two-wheel-mode operation. It is especially true for variable stars wherein physical phenomena occur on timescales similar instrumental signals. We originally developed a method with aim extend aperture be able compensate motion which we named Extended Aperture Photometry (EAP). Here present outline automatized version EAP method, an open-source pipeline called autoEAP . compare light curve products other solutions examples chosen from high-amplitude stars. In addition photometry, new detrending based phase dispersion minimization and eliminate long-term signals periodic