DTPA Seminar: Jiří Žák

The Department of Theoretical Physics and Astrophysics invites you to the department seminary. The speaker of the our successful graduate:

Jiří Žák: Stellar obliquity of gas giant planets

The Rossiter-McLaughlin effect allows us to determine the stellar obliquity. This parameter is indicative of formation and evolutionary pathways of exoplanetary systems. In this talk, I will present stellar obliquity measurements of 14 gas giant planets obtained with high-resolution instruments and discuss their potential histories. Additionally, I will outline plans for upcoming atmospheric characterization using JWST and Ariel, highlighting how these observations will complement the obliquity findings. Furthermore, I will show ESPRESSO observations of HD 110067, resonant chain of six planets similar to TRAPPIST-1. The orbit of HD 110067c is well aligned. This result is indicative that the current architecture of the system has been reached through convergent migration without any major disruptive events.