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"Spiral arms in stellar and gaseous disks: engines of galaxy morphological transformation" Spirals are iconic features of galaxies, and yet conventional theoretical models for how they emerge and evolve only partially capture their observed traits and their connections to their host disks....
"Dust in galaxies at high redshift: insights from ALMA and JWST" Many questions remain in the study of dust in the early Universe. When does significant dust form? What are the properties of the dust grains compared to lower redshifts? How does dust impact our...
"Analysis of samples from the asteroids Ryugu and Bennu in the laboratory and implications for prebiotic chemistry issues" Undifferentiated small bodies, including small asteroids, are objects whose chemical composition has changed little for more than 4 billion years. Studying them provides...
"Collisional Dynamics in the Faintest Galaxies" Guided by the recent discoveries of faint Milky Way satellites with structural properties lying at the interface between the ultra‑faint galaxy and globular‑cluster regimes, I will discuss how micro‑galaxies can be distinguished...
"L'évolution en cours de l'évaluation de la recherche" La nécessité de faire évoluer l'évaluation de la recherche pour prendre en compte la diversité des activités et des produits de celle-ci est largement reconnue au niveau national, européen et international, ainsi que par les...
"Early dark energy and phantom crossing in the axio-dilaton system" Recent measurements by DESI suggest that dark energy is dynamical with an usual feature called phantom crossing.I will present models of coupled dark energy to matter where phantom crossing is natural. These models can...
"What's Your Story? Deciphering galaxy formation histories from present-day properties" Since around 100 years it has been known that our Milky Way is not the only island of stars in the Universe. Many other galaxies have since been found, featuring an immense variety of properties. Diverse...
"Lex ex Machina" Over the next few years, Rubin/LSST, Euclid, Roman, SKA, and other instruments will produce petascale, information‑rich datasets that trace stars, galaxies, and large-scale structure with unprecedented fidelity. Hidden in these data may be regularities that point to new and...
"X-ray Polarimetry of Supernova Remnants with IXPE" Supernova Remnants (SNRs) are among the most important sources of non-thermal X-rays in the sky and are likely contributors to Galactic cosmic rays, and represent ideal targets to showcase the capabilities of the Imaging X-ray Polarimetry...
"Star formation in hierarchical molecular clouds: Questioning our certainties of universality" Understanding star formation requires addressing the challenge of determining how the discrete distribution of stars emerges from the continuous distribution of gas in molecular clouds. The...
