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Diversity of Super-Earth

Detail Summary
Date 9 September 2020
Time 11:00 -12:00

The increasing number of newly discovered extrasolar planets reveal a remarkable diversity in planet sizes and mean densities. Among the most frequently occurring planets are super Earths and mini-Neptunes, whose interiors are largely unknown. Detailed interior characterization is challenging since data are few and have significant uncertainties. For the data of planetary mass and radius, I will discuss what data precision is needed in order to better constrain specific interior properties. Given data of mass and radius alone, many interiors can be modelled and it is key to make additional constraints available. With the focus on Super-Earths, I will discuss a range of additional constraints that help to improve interior estimates, including stellar abundances and stellar XUV irradiation. Finally,  I will highlight main achievements in finding exotic and less exotic worlds.