Direct imaging potential of outer companions of eclipsing binary stars with 4-meter telescope of the Eastern Anatolia Observatory (DAG)

Investigation of gravitationally bound objects to the binary star systems is crucial for understanding binary star formation and their orbital evolution. They also provide significant advantages in the empirical determination of the observational limits of a direct imaging system thanks to the wide range of spectral type and magnitude differences (contrast), and angular separations between binary components and their additional companions. In this study, the potential of direct imaging of these additional bodies proposed by various methods around binary stars with the brand-new 4-meter DAG telescope will be discussed. DAG Direct Imaging System (DGS) is composed of an active and adaptive optics system, a coronagraph, and an infrared imager to be operated in the near infrared wavelengths (<3 microns), for which the first light is expected to be acquired in 2025.