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

Katja Poppenhaeger (Invited speaker)

Activity: Talk or presentation typesInvited or keynote talk at national or international conference


Invited talk "Stellar activity and planet characterisation".
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.
Period28 Apr 2017
Event titleAtmospheres of disks and planets 2017: A Ringberg conference
Event typeConference
LocationKreuthen, Germany
Degree of RecognitionInternational