Title: Stellar Jitter at 50 Myr: Establishing Planet Detection Limits and Constraining Giant Planet Migration Theories PI: Asmain Nisak Abstract ----------------------------------------------------------------------------------- Open clusters are important for constraining planet migration theories because their stars have young, well-determined ages. However, stellar jitter that masks or mimics planetary radial velocities (RV) makes detecting and confirming young and adolescent age planets difficult. Determining stellar jitter amplitudes in the age range of 10-100 Myr, which is largely unknown, is of great interest to NASA’s TESS mission and programs to confirm candidates from RV follow-up work. This past spring (2019), we monitored RVs of 12 of 24 slowly rotating Sun-like stars in the 43-52 Myr old clusters IC 2391 and IC 2602 to measure the stellar jitter and search for possible companions. Our preliminary analyses reveal median RV dispersions of 80 m/s, which is promising for giant planet detection. We propose to complete our survey of these clusters by monitoring the remaining 12 stars and by revisiting the previously monitored stars to check for long-period variations. The complete sample will help establish a less biased measure of stellar jitter at 50 Myr and may potentially identify a massive hot Jupiter.