Wind dynamics play a pivotal role in governing transport processes within planetary atmospheres, influencing atmospheric chemistry, cloud formation, and the overall energy budget. In the context of hot Jupiter atmospheres, understanding the strength and patterns of winds is crucial for comprehensive insights. Current research has proposed two contrasting mechanisms that limit wind speeds in these atmospheres, each predicting a different scaling of wind speed with planet temperature. However, the sparse nature of existing observations hinders the determination of population trends and the validation of these proposed mechanisms.

This study focuses on unraveling the wind dynamics of hot Jupiter TOI-1518b through two transit observations using the high-resolution spectrograph Maroon-X. Our analysis reveals a coherent blueshift in the iron trail during the transit, aligning with predictions from General Circulation Models (GCM). Furthermore, we present a tentative detection of Titanium Oxide (TiO), providing additional insights into the atmospheric composition