Orateur
Constantin Payerne
(LPSC)
Description
I will present my work on the analysis of DC2 catalogs for weak-lensing mass determination of galaxy clusters, for cluster count cosmology application. Among others, the objectives were to test the cosmoDC2_v1.1.4_image catalog for W.L. mass reconstruction (as an ideal galaxy catalog), and after to study the effect of image deterioration of a sky survey on the cluster mass, due to the presence of the atmosphere and the telescope. Indeed, it affects the measure of the true galaxy ellipticities, and then introduces a biais in the W.L. cluster mass, where galaxy shape measurement is crucial. For my work, I used a DC2 object catalog (dc2_object_run2.1i_dr1) by comparing with the results obtained with the ideal galaxy catalog.
Auteur principal
Constantin Payerne
(LPSC)
