Annelies Mortier
University of Birmingham

Abstract
The ever-growing sample of exoplanetary systems allows us to study their mass-radius relationship or lack thereof and their connection with their host stars, if any. Despite all these wonderful exotic new worlds, we are yet to find a planet like the Earth. Our biggest challenge is the star itself creating signals due to its inherent variability. Progress needs to be made on multiple fronts, including but not limited to further instrument development, data extraction pipeline improvement using stellar-informed line masks, exploiting more advanced data techniques coupled with a deep stellar physics understanding, and further growing the samples. In this talk, I will present the various ways in which we use Least-Squares-deconvolution to improve RV extraction, measure activity indicators, and model radial velocities for small planets orbiting solar-type stars. I will also give insights on how these small planets change with stellar composition.

2026 October 30, 11:00

IA/U.Porto
Centro de Astrofísica da Universidade do Porto (Auditorium)
Rua das Estrelas, 4150-762 Porto