Astronomy Colloquium

Biard Lecture

Understanding galaxy evolution -- how galaxies change over time and what processes are responsible for the variety of  properties and structures we observe in galaxies today —   remains one of astronomy's most active fields, involving massive efforts, both theoretical and observational. In this talk, I will focus on one piece of the puzzle: the study of the wide diversity of galaxy properties — structure, kinematics, and stellar population — in a specific environment: the Virgo cluster. Based on a panchromatic, deep, and complete census of the galaxy population in Virgo, I will focus on "galaxies at the extreme": ultra compact dwarfs, ultra diffuse galaxies, compact ellipticals. I will discuss their connection to galaxies belonging to the main galactic sequence, and what these seemingly unusual objects can tell us about the formation of the galaxy population as a whole.

To view this talk via YouTube, please visit: https://www.youtube.com/playlist?list=PLb1880Rn0qkKzIavl-n_7RaMyDOiU9XHm