Thesis Topic: Star-disc interaction at the dawn of planet formation


Thesis Supervisor: Carlo F. Manara


While protoplanetary disks are known to be the birthplace of planets, the understanding of both how and when planets form and how exactly disks evolve is still missing. Our extensive surveys of young stars in several star-forming regions with VLT/X-Shooter spectroscopy and with high-resolution ALMA sub-mm data are starting to constrain the timescale on which planets form, and to have a better understanding of the properties of their natal disks. How disks evolve and, in turn, how this can be studied by observing the interaction between the star and the disk through accretion and ejection of material is still matter of debate. The project will involve reduction, analysis, and interpretation of VLT/X-Shooter, VLT/ESPRESSO, VLT/UVES and more spectra of young stellar objects with state-of-the art tools, mainly coming from the new ESO/VLT Large Program PENELLOPE (, and from the wealth of data from the HST/ULLYSES and related programs. On top of that, the student will work on complementary ALMA data to asses properties of the disks. Collaborations with several other ESO staff and international collaborators will allow to expand the knowledge on the topic and to better interpret the results.


Manara et al., PENELLOPE: The ESO data legacy program to complement the Hubble UV Legacy Library of Young Stars (ULLYSES). I. Survey presentation and accretion properties of Orion OB1 and σ-Orionis, Astronomy & Astrophysics, 2021, 650, A196