Spectroscopic analysis of stellar populations is widely used to understand the history of many systems including globular clusters, nuclear star clusters, dwarf...
Introduction of new postdocs. (1) Stellar magnetic fields, (2) My humble efforts to understand galaxy formation and evolution, (3) Waiting for Herschel: my perspective
(1) Stellar magnetic fields. Spectro-polarimetry is a very powerful tool to diagnose magnetic fields in a large variety of astrophysical objects. My research...
Is the riddle of the astronomical Li origin solved?
Lithium is a key element which plays an important role in astronomy as well as everyday human life. Nevertheless it is probably the only element whose...
JWST view of Polycyclic Aromatic Hydrocarbons and dust in local active galaxies
Nowadays, it is widely accepted that most galaxies undergo an active phase in their evolution. The impact of the energy released by active galactic nuclei (AGN)...
Kinematics and stellar population gradients as fingerprints of past mergers in elliptical galaxies
The formation and evolution of early-type galaxies constitutes a long-standing and crucial problem in cosmology. In all hierarchical clustering models within a...
Large scale structures and galaxy evolution in the COSMOS Survey
The COSMOS survey is the largest high redshift galaxy evolution survey ever done -- imaging 2 square degrees with all major space-based and ground based...
Localized starbursts in dwarf galaxies produced by impact of low metallicity cosmic gas clouds
Models of galaxy formation predict that gas accretion from the cosmic web is a primary driver of star formation over cosmic history. Except in very dense...
Lyα Emitting Galaxies (LAEs) at Cosmic Dawn: Implications and Predictions
The detection of Lyα emitting galaxies (LAEs) puts severe constraints on the reionization history. In this paper, we derive the properties of very high-z LAEs...
Magnetic turbulence hidden in the Whirlpool Galaxy
There is a force hidden deep inside galaxies: magnetic fields. Invisible to conventional telescopes, they are a factor in galaxy evolution, regulating the...