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Clusters And LENsing of Distant Sources

Final Report Summary - CALENDS (Clusters And LENsing of Distant Sources)

The Clusters And LENsing Distant Galaxies (CALENDS) projects aimed at using the best observations
available on massive galaxy clusters and use them as gravitational telescopes to study the galaxies in
the distant Universe. Our goals were to first calibrate the mass distribution of these clusters to
understand how they magnify the light of distant sources. We used novel techniques to
automatically identify sources producing mirages, i.e. multiple images of the same source galaxy.
Complemented by very efficient spectroscopic follow-up using the MUSE instruments, we have been
able to obtain very accurate mass models. We have then started to use these models to understand the
properties of the distant galaxies, which appear in the form of very magnified extended arcs, where
we can resolve their inner properties such as the formation of stars and the distribution of the gas. We
have also built a large sample of distant low-mass galaxies at high redshift for which we were able to test
the scaling relations between parameters such as size and mass, mass and star formation.