Since the beginning of astronomical observations, our view of the Universe has been shaped by optical images of the sky. However, this view is inherently incomplete, as it overlooks sources too faint to be detected at those wavelengths. While some of these may be low-mass galaxies that can be statistically accounted for, others are significantly more massive and heavily obscured by dust. In this seminar, I will focus on these hidden, dust-obscured galaxies. I will present several strategies to detect such “invisible” sources and constrain their physical properties. The ultimate goal is to understand how common they are and assess their impact on our current picture of the Universe. I aim to show that a true understanding of the cosmos requires a comprehensive, multi-wavelength approach, involving in the analysis some of the most advanced telescopes ever built.
Local contact: Thierry FOGLIZZO
Organization: Frédéric GALLIANO
DAp