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Future stellar flybys of the Voyager and Pioneer spacecraft
Coryn A. L. Bailer-Jones, Davide Farnocchia
The Pioneer 10 and 11 and Voyager 1 and 2 spacecraft, launched in the 1970s, are heading out of the solar system. Using the astrometric and radial velocity data from the second Gai…
Evidence of a dynamically evolving Galactic warp
E. Poggio, R. Drimmel, R. Andrae +5
In a cosmological setting, the disc of a galaxy is expected to continuously experience gravitational torques and perturbations from a variety of sources, which can cause the disc t…
Quasar and galaxy classification in Gaia Data Release 2
Coryn A. L. Bailer-Jones, Morgan Fouesneau, Rene Andrae
We construct a supervised classifier based on Gaussian Mixture Models to probabilistically classify objects in Gaia data release 2 (GDR2) using only photometric and astrometric dat…