7 papers
The flare and spiral structure of the Milky Way's disc as traced by young giant stars
E. Poggio, R. Drimmel, S. Khanna +2
We explore the three-dimensional structure of a sample of 16000 young giant stars in the Galactic disc out to 8 kpc in heliocentric distance. This population traces a…
The Great Wave: Evidence of a large-scale vertical corrugation propagating outwards in the Galactic disc
E. Poggio, S. Khanna, R. Drimmel +6
We analyse the three-dimensional structure and kinematics of two samples of young stars in the Galactic disc, containing respectively young giants (17000 stars out to he…
The Problem of the Global Astrometric Sphere Reconstruction in Astrometry -- Issues and Approaches
Alberto Vecchiato, Alexey Butkevich, Mario Gai +3
In this contribution we give a brief account of the problem of the Global Astrometric Sphere Reconstruction in Astrometry, with particular reference to the Gaia and Gaia-like astro…
The Gaia AVU-GSR solver: a CPU + GPU parallel code toward Exascale systems
Valentina Cesare, Ugo Becciani, Alberto Vecchiato +3
The solver module of the Astrometric Verification Unit - Global Sphere Reconstruction (AVU-GSR) pipeline aims to find the astrometric parameters of stars in the Milky…
Exploring Milky Way rotation curves with Gaia DR3: a comparison between CDM, MOND, and General Relativistic approaches
William Beordo, Mariateresa Crosta, Mario Gilberto Lattanzi
With the release of Gaia DR3, we extend the comparison between dynamical models for the Milky Way rotation curve initiated in the previous work. Utilising astrometric and spectro-p…
Icarus revisited: An Ancient, Metal-poor Accreted Stellar Stream in the Disk of the Milky Way
Paola Re Fiorentin, Alessandro Spagna, Mario G. Lattanzi +2
The search for accreted satellites in the Galactic disk is a challenging task, to which Gaia plays a crucial role in synergy with ground-based spectroscopic surveys. In 2021, Re Fi…