CFHT UM2025 - Presentation Details
Abstract Details
Title: From Euclid ERO-Perseus to the Pisces-Perseus filament observed with CFHT: Investigating environmental effects on galaxy morphology in LSS
Presenter: Maelie Mondelin
Abstract:
Located in the local universe (z<0.2), the Pisces-Perseus filament is a remarkable large-scale structure (LSS), providing a unique perspective to study the influences of LSS on galaxy morphology and dynamics. Using CFHT-MegaCam data over 350 deg², my study delves into the morphological segregation and spatial distribution of galaxies within the filament. Measurements of the distribution and alignment of galaxies near the filaments have revealed distinct patterns of morphological segregation: evolved red elliptical galaxies are concentrated and aligned within clusters and groups, while younger blue spiral galaxies are aligned in less dense areas, tracing the sub-filaments. Through LSB processing, the analysis focuses on outer isophotes, which are particularly sensitive to environmental interactions due to their weak gravitational binding, allowing for a detailed examination of how the filamentary environment shapes galaxy evolution. Concurrently, I have used the Euclid Early Release Observations (ERO) to conduct a detailed study of the Perseus cluster, a key component of the Pisces-Perseus filament. This part of the study focuses on disk galaxies, specifically examining structural features such as truncations and antitruncations in their surface brightness profiles.