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Bars and boxy/peanut bulges in thin and thick discs. II. Can bars form in hot thick discs?
Soumavo Ghosh, Francesca Fragkoudi, Paola Di Matteo +1
The Milky Way as well as a majority of external galaxies possess a thick disc. However, the dynamical role of the (geometrically) thick disc on the bar formation and evolution is n…
The distribution of globular clusters in kinematic spaces does not trace the accretion history of the host galaxy
Giulia Pagnini, Paola Di Matteo, Sergey Khoperskov +4
Reconstructing how all the stellar components of the Galaxy formed and assembled over time, by studying the properties of the stars which make it, is the aim of Galactic archeology…
Gaia Data Release 3 Properties and validation of the radial velocities
D. Katz, P. Sartoretti, A. Guerrier +47
Gaia Data Release 3 (Gaia DR3) contains the second release of the combined radial velocities. It is based on the spectra collected during the first 34 months of the nominal mission…
Unraveling UBC 274: a morphological, kinematical and chemical analysis of a disrupting open cluster
L. Casamiquela, J. Olivares, Y. Tarricq +8
We do a morphological, kinematic and chemical analysis of the disrupting cluster UBC 274 (2.5 Gyr, pc) to study its global properties. We use HDBSCAN to obtain a new membe…
The stellar halo in Local Group Hestia simulations II. The accreted component
Sergey Khoperskov, Ivan Minchev, Noam Libeskind +12
In the Milky Way, recent progress in the exploration of its assembly history is driven by the tremendous amount of high-quality data delivered by Gaia, which has revealed a number…
The stellar halo in Local Group Hestia simulations I. The in-situ component and the effect of mergers
Sergey Khoperskov, Ivan Minchev, Noam Libeskind +12
Theory suggests that mergers play an important role in shaping galactic discs and stellar haloes, which was observationally confirmed in the MW thanks to Gaia data. In this work, a…