Rotation Periods of TESS Objects of Interest from the Magellan-TESS Survey with Multiband Photometry from Evryscope and TESS

Stellar RV jitter due to surface activity may bias the semi-amplitude and mass of rocky planets. The amplitude be estimated from uncertainty in rotation period, allowing more accurately obtained. We find candidate periods for 17 out 35 TESS Objects Interest (TOI) hosting <3 R_Earth planets as part Magellan-TESS Survey, which is first-ever statistically robust study exoplanet masses radii across photo-evaporation gap. Seven are 3+ sigma detections, two 1.5+ sigma, 8 show plausible variability but remain unconfirmed. other 18 TOIs non-detections. Candidate rotators include host stars confirmed L 168-9 b, HD 21749 system, LTT 1445 A TOI 1062 98-59 system. 13 candidates have no counterpart 1000 catalog Canto Martins et al. (2020). G3-M3 dwarfs using combined light curves Evryscope all-sky array small telescopes, sometimes with longer than would possible alone. Secure range 1.4 26 d Evryscope-measured photometric amplitudes 2.1 mmag g'. also apply Monte Carlo sampling a Gaussian Process stellar model code 6 confirm periods.