Title: Probing Cold Gas around Galaxies through the Mg II Resonance Doublet Abstract: The structure and kinematics of the gas around and in galaxies are crucial for understanding the multiphase flows within the galactic ecosystem and, thus, galaxy evolution and star formation. Recent advancements in instruments and techniques offer a new perspective on circumgalactic gas flows […]

Title:    Results and perspectives from the ExoGRAVITY Large Programme Abstract: The direct detection of a giant exoplanet using long-baseline interferometry in 2019 marked the debut of the GRAVITY instrument in exoplanet research. This breakthrough was followed by the detailed spectroscopic characterization of beta Pictoris b's atmosphere in 2020, demonstrating the potential of long-baseline interferometry […]

Titre: L’impact du dérèglement climatique sur l'astronomie observationnelle Résumé: Les grands observatoires astronomiques fonctionnant dans le visible/infrarouge sont souvent accompagnés de station météo afin de suivre les paramètres clés qui affectent la qualité des observations obtenues. La plupart de ces suivis ont maintenant atteint une échelle temporelle de 30ans, permettant d'explorer si il existe des […]

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Title: Stellar mass assembly of massive galaxies in the first five billion years of the Universe   Abstract:Over the past two decades, extensive multi-wavelength observations of the COSMOS field have provided an exceptional view of galaxy evolution across cosmic time. With the recent addition of JWST/NIRCam imaging, our understanding of the distant Universe has advanced dramatically. […]

Title: The puzzling nature of hot exozodiacal dust: the case of Beta Pictoris Abstract: Hot exozodiacal clouds are populations of dust grains residing in the inner regions of main-sequence stars at temperatures exceeding 1000K. It is a puzzling phenomena in exoplanetary science. On theoretical grounds, such dust should rapidly sublimate or be expelled by radiation […]

Title: CALIMA: Opening the window to the imprint of formation and evolution of H2, CO, dust and PAHs on the ISM Abstract:  The thermodynamical state of the interstellar medium (ISM) in the local Universe is now understood to arise from a tightly coupled network of processes. Much of this progress, however, has been driven by theoretical […]

Title: PAPYRUS: transforming a legacy telescope at Observatoire de Haute-Provence into an ELT innovation platform Abstract: Modern observatories rely on wavefront sensing and control to achieve their ultimate angular resolution. Adaptive optics (AO) has become a cornerstone of large telescope instrumentation, and all ELT instruments will operate behind an AO system. While AO technologies are now […]