Interacting galaxies hiding into one, revealed by MaNGA
Résumé
Interacting galaxies represent a fundamental tool for investigating the underlying mechanisms that drive galaxy evolution. In order to identify merging systems, high-resolution spectroscopic data are required, especially when the morphology does not show clear galaxy pairs. Here, we present a merging galaxy, MaNGA 1-114955, in which we highlighted the superimposition of two distinct rotating discs along the line of sight. We suggest that we are observing a pre-coalescence stage of a merger. Our results demonstrate how a galaxy can hide another one and the relevance of a multi-component approach for studying ambiguous systems.