Events

© 2025 Observatoire Astronomique de Strasbourg | Webdesign et développement Alchimy.

9 December 2022

Séminaire – Bertram Bitsch (MPIA Heidelberg)

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...

2 December 2022

Séminaire – Federico Lelli (INAF – Firenze)

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...

25 November 2022

Séminaire – Giulia Despali (ZAH – Heidelberg)

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...

18 November 2022

Séminaire – David Martinez-Delgado (IAA-CSIC, Granada)

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...

4 November 2022

Séminaire – Céline Reylé (UTINAM)

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...

21 October 2022

Séminaire – Jens-Kristian Krogager (CRAL)

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...

14 October 2022

Séminaire – Sebastian Trujillo Gomez (ARI Heidelberg)

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...

7 October 2022

Séminaire – Uddipan Banik (Yale)

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...

7 October 2022

Séminaire – Rahul Basu (Zielona Góra University)

Understanding the nature of Partially Screened Gap in Pulsars from Subpulse Drifting Abstract The radio emission from pulsars is expected to arise as a result of instabilities developing in a non-stationary plasma moving along the open magnetic field lines. The out-flowing plasma is setup...

30 September 2022

Séminaire – Tariq Yasin (Oxford University)

Inferring dark matter halo properties for HI-selected galaxies Abstract An important test of LCDM is the degree of consistency between dark matter halo properties measured using galaxy kinematics and their cosmologically expected values. Due to the observational expense in obtaining resolved...