About

Welcome to my website! My name is León-Alexander Hühn. I am a PhD student at the Institute for Theoretical Astrophysics (ITA) at the Center for Astronomy at Heidelberg University, 18th generation fellow of the IMPRS-HD, and member of the ECOGAL project and the STRUCTURES excellence cluster YRC.

My research interest lies in the area of planet formation. I completed my bachelor and master thesis at the Max Planck Institue for Astronomy in Heidelberg, studying the resonance chain in the Kepler-223 system and how the accretion of planet-forming disks influences stellar chemical abundances. The work was carried out under the supervision of Dr. Bertram Bitsch.

My PhD research in the group of Prof. Dr. Cornelis Dullemond at ITA will revolve around planet formation in the early stages of protoplanetary disks, aiming to sharpen our understanding of the onset of planet formation and the required dust budget.

Schematic view of the Kepler-223 resonance chain.

Kepler-223

The Kepler-223 8:6:4:3 resonance chain of four sub-Neptunian planets holds information about the turbulence strength during the gas-disk phase.

Artists impression of a young star accreting from the circumstellar disk.
Image: Mark A. Garlick

Disk accretion

The accretion of material from the circumstellar disk influences the stellar chemical abundances. Planet formation could be responsible for the observed abundance differences between the constituents of the HD106515 binary system.