Abstract
Early Formation and Evolution of Bulge and HalO (EFEBHO) The main aim of this project is to robustly understand the structure of the Galactic spheroid (Halo, Bulge) with unrivaled detail and solid statistical accuracy. This will be achieved by fully exploiting publicly available, cutting-edge datasets of old stellar tracers (RRLs), and by complementing them with both our forefront unique ancillary spectroscopic and photometric datasets and state-of-the-art theoretical modeling (pulsation, chemo-dynamical, N-body/hydrodynamical simulations). The scientific objective and the novelty of the methodological approach make this project unique, with potentially far-reaching implications for our understanding of the early formation and evolution of the MW. A full characterisation of Gaia field RRLs. New optical, NIR and MIR pulsation relations for Halo RRLs. Global Halo metallicity distribution of RRLs. Alpha-element abundances of Halo RRLs. Comparison between observed and theoretical RRL Halo density profile. New distances, metallicities and reddenings for Halo RRLs. Intrinsic stellar parameters of Gaia RRLs through the theoretical modeling of their multifilter light-curves. Neutron capture element distribution, Iron peak distribution and Halo Halo metallicity gradient traced by RRLs; halo structure, chemical enrichment history and mass assembly, traced by RRLs. Census of RRLs in the Ursa Minor dSph and in the Draco dSph.
Project details
Unibo Team Leader: Luca Ciotti
Unibo involved Department/s:
Dipartimento di Fisica e Astronomia "Augusto Righi"
Coordinator:
Inaf - Istituto Nazionale Astrofisica(Italy)
Total Unibo Contribution: Euro (EUR) 19.002,00
Project Duration in months: 24
Start Date:
28/09/2023
End Date:
28/02/2026
