Program: GN-2024B-DD-101

The formation of planetary systems in close binary stars, initially viewed as unlikely, has received little theoretical treatment. However, over 500 exoplanets are known to orbit one star (or the other) in binary (multiple) star systems. To date, no observational study has examined the nature of planetary system architectures in binary systems in order to obtain information related to the formation and evolution processes involved. We plan to examine stars harboring exoplanets that can provide such direct evidence. We will observe systems in which at least one planet as an orbital separation of many au, potentially being >1/3 of the distance to the companion star. Also, we plan to examine compact, multiple planet systems to find evidence for (or against) a close companion which may have truncated formation or gravitationally coupled with the planets causing them to form compact, flat, resonant planetary systems.