Schultheis, M. (author), Zhao, H. (author), Zwitter, T. (author), Hladczuk, N.A. (author), Guerra, R. (author), Lammers, U. L. (author), Bakker, J. (author), Teodoro, P. de (author), García-Lario, P. (author) The Gaia Galactic survey mission is designed and optimized to obtain astrometry, photometry, and spectroscopy of nearly two billion stars in our Galaxy. Yet as an all-sky multi-epoch survey, Gaia also observes several million extragalactic objects down to a magnitude of G 21 mag. Due to the nature of the Gaia onboard-selection algorithms, these...
journal article 2023