Extragalactic globular clusters with Euclid and other wide surveys

Understand

Globular clusters play a role in many areas of astrophysics, ranging from stellar physics to cosmology.

• New ground-based optical surveys complemented by observations from space-based telescopes with unprecedented near-infrared capabilities will help us solve the puzzles of their formation histories.
• In this context, the Wide Survey of the Euclid space mission will provide red and near-infrared data over about 15000 square degrees of the sky.
• Combined with optical photometry from the ground, it will allow us to construct a global picture of the globular cluster populations in both dense and tenuous environments out to tens of megaparsecs.