Conference "Atmospheres of disks and planets 2017: A Ringberg conference"

Description

Invited talk "Stellar activity and planet characterisation".
Abstract:
Stellar activity is a multi-faceted physical phenomenon. It includes observables such as star spots, flares, coronal mass ejections, and stellar high-energy emission, which are all tied to the stellar magnetic field. It has been known since the early days of exoplanet detections that stellar activity can pose a major difficulty in retrieving radial velocity signals of planets. However, there are many more subtle activity effects that can influence planet characterization. I will discuss this topic along two axes: First, there are some stellar activity manifestations that actually do influence the physical characteristics of exoplanets, mainly of those in close-in orbits. Second, activity manifestations can affect the measurement of other observables than just orbital radial velocity variations; examples include planetary radii and obliquities. I will conclude with an outlook on future possibilities to characterize stellar activity in more detail to improve exoplanet studies.

Period	28 Apr 2017
Event title	Atmospheres of disks and planets 2017: A Ringberg conference
Event type	Conference
Location	Kreuthen, Germany
Degree of Recognition	International