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Euclid preparation: LVIII. Detecting extragalactic globular clusters in the Euclid survey

Cimatti, A.; Ilbert, O.; Baccigalupi, C. +270 more

Extragalactic globular clusters (EGCs) are an abundant and powerful tracer of galaxy dynamics and formation, and their own formation and evolution is also a matter of extensive debate. The compact nature of globular clusters means that they are hard to spatially resolve and thus study outside the Local Group. In this work we have examined how well…

Euclid: A complete Einstein ring in NGC 6505

Altieri, B.; Aussel, H.; Cimatti, A. +195 more

We report the discovery of a complete Einstein ring around the elliptical galaxy NGC 6505, at z = 0.042. This is the first strong gravitational lens discovered in Euclid and the first in an NGC object from any survey. The combination of the low redshift of the lens galaxy, the brightness of the source galaxy (I_E = 18.1 lensed, I_E