The Euclid Consortium has published the largest simulated galaxy catalogue to date, making it available to researchers worldwide. It includes 3.4 billion galaxies, each modelled with numerous properties such as brightness, position, velocity and shape. The work was developed by eight European institutions, led by the Institute of Space Sciences (ICE-CSIC) and the Port d’Informació Científica (PIC) in Barcelona, Spain.

The new catalogue is available on the CosmoHub platform.

The University of Trieste contributed to the project by validating the catalogue, ensuring its suitability for cosmological analysis.

In parallel, Pierluigi Monaco, Professor of Astrophysics and Cosmology, and his team produced a set of thousands of simulations using a fast approximate method called PINOCCHIO (PIN-pointing Orbit Crossing Collapsed HIerarchical Objects). The 4,500 simulations replicate the sample that Euclid will observe through spectroscopy, with the aim of calculating the uncertainties in determining cosmological parameters.

To learn more, the Italian National Institute for Astrophysics (INAF) interviewed Prof. Monaco, first author of the article recently accepted for publication in Astronomy & Astrophysics on these simulations.

Read the interview “Thousands of Simulations: One Universe Is Not Enough” – MEDIA INAF