Program: GN-2020B-Q-227

We are carrying out a 3 year survey of A/B type sub-arcsecond binary stars with the CHARA and VLTI arrays. Our ARMADA survey was designed for the purpose of detecting giant exoplanets on au orbits to individual stars in the binary pair. Understanding the parameters of the outer binary is crucial for maximizing the science potential of ARMADA. Since our targets are long-period binaries, most are not very well studied. Speckle imaging with Alopeke and Zorro on Gemini North and South can provide much needed information about our targets in short observations. Our targets are all bright binaries, meaning that these observations are easy and can be carried out in poor weather conditions. These quick snapshots will allow us to identify any unseen additional companions to the binary system, as well as provide multi-band flux ratios of the binary to constrain spectral type. This data will shed light on the discrepancies we see in our sample between dynamical and photometric masses. Long period binary stars are difficult to study due to the time baseline required, but with speckle imaging we will be able to compute the orbits and placement on HR diagrams of our 70 ARMADA binary targets. This information will also allow us to better constrain how exoplanet frequency varies with spectral type of the host star.