Galaxy formation and symbiotic evolution with the inter-galactic medium in the age of ELT-ANDES
Experimental Astronomy Springer 58:3 (2024) 21
Authors:
Valentina D’Odorico, James S Bolton, Lise Christensen, Annalisa De Cia, Erik Zackrisson, Aron Kordt, Luca Izzo, Jiangtao Li, Roberto Maiolino, Alessandro Marconi, Philipp Richter, Andrea Saccardi, Stefania Salvadori, Irene Vanni, Chiara Feruglio, Michele Fumagalli, Johan PU Fynbo, Pasquier Noterdaeme, Polychronis Papaderos, Céline Péroux, Aprajita Verma, Paolo Di Marcantonio, Livia Origlia, Alessio Zanutta
Abstract:
High-resolution absorption spectroscopy toward bright background sources has had a paramount role in understanding early galaxy formation, the evolution of the intergalactic medium and the reionisation of the Universe. However, these studies are now approaching the boundaries of what can be achieved at ground-based 8-10m class telescopes. The identification of primeval systems at the highest redshifts, within the reionisation epoch and even into the dark ages, and of the products of the first generation of stars and the chemical enrichment of the early Universe, requires observing very faint targets with a signal-to-noise ratio high enough to detect very weak spectral signatures. In this paper, we describe the giant leap forward that will be enabled by ANDES, the high-resolution spectrograph for the ELT, in these key science fields, together with a brief, non-exhaustive overview of other extragalactic research topics that will be pursued by this instrument, and its synergistic use with other facilities that will become available in the early 2030s.
