I am an observational astrophysicist who studies galaxy formation and evolution, from the earliest times after the Big Bang to the present day. I’m particularly interested in the most massive and luminous galaxies in the Universe. Massive galaxies --- galaxies more massive than the Milky Way, yet formed more than ~10 billion years ago --- are rare, and therefore require large surveys to find them.
I am one of the principal investigators of COSMOS and COSMOS-Web Surveys, both large-area surveys several times the area of the moon on the sky, designed at taking census of rare systems in the early Universe.