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Probing substructure with cold stellar streams: the diffusion regime Abstract Cold tidal streams from disrupting globular clusters offer a promising probe to constrain substructure (small-scale potential perturbations) in the Milky Way halo, purely gravitationally. While the bulk of the...
Linear stability and linear response of stellar clusters with the matrix method Abstract In the last few decades, observational evidence showed that spheroidal stellar systems of all scales – from the smallest star clusters to the largest galaxies – display significant kinematic...
Can we constrain planet formation from atmospheric abundances? Abstract Observations of exoplanets have mostly constrained theories via occurrence rates of planetary masses, radii and their orbital distributions. However, recent observations have also started to constrain the chemical...
Cold gas dynamics in high-z galaxies Abstract Gas dynamics play a key role in our understanding of the formation and evolution of galaxies. At z=0 gas dynamics has been extensively studied using a variety of tracers, such as the emission lines of atomic gas (HI), molecular gas (CO), and...
Constraining dark matter with strong lensing and hydro simulations Abstract It has been demonstrated that strong gravitational lensing is one of the most promising methods to distinguish between CDM and alternative dark matter models. Warm dark matter can be constrained through the...
Stellar Tidal Streams beyond the Local Group Abstract Within the hierarchical framework for galaxy formation, merging andtidal interactions are expected to shape large galaxies up to thepresent day. While major mergers are quite rare at present, minormergers and satellite disruptions - that...
The solar neighbourhood and ultracool dwarfs revealed by Gaia Abstract Gaia relies on the proven principles of ESA's Hipparcos mission to help solve one of the most difficult yet deeply fundamental challenges in modern astronomy: the creation of an extraordinarily precise three-dimensional...
Dust Depletion Near and Far Abstract Dust grains play an important role in galaxy ecosystems from the very smallest scales in the interstellar medium through photoelectric heating all the way to the global galactic scales through reprocessing of UV photons into infrared photons. These...
Reconstructing galaxy formation using observational tracers: from the Milky Way to the local Universe Abstract In this talk I will describe two complementary approaches to understanding the assembly of galaxies in a cosmological context. In the first method, we use star cluster properties to...
Pushing the frontiers of gravitational encounters and collisionless dynamics Abstract The long range nature of gravity complicates the dynamics of self-gravitating many-body systems such as galaxies and dark matter (DM) halos. Relaxation/equilibration of perturbed galaxies and cold dark...