Near-Field Cosmology using Narrow-Band Photometry and Low-Metallicity Stars

Data: 
11/03/2020 - 14:00 - 15:00
Local: 
Auditório "Prof. Dr. Paulo Benevides Soares", Bloco G

Near-Field Cosmology using Narrow-Band Photometry and Low-Metallicity Stars

 

Vinícius M. Placco

Un. of Notre Dame - USA

 

The lowest metallicity stars in the Milky Way Halo are the fossil records of the earliest times in the history of the Galaxy and the Universe. Chemo-dynamical studies of such rare objects can address a myriad of open questions, ranging from the early merger history of the Milky Way to the mass function of the first stars and the nature of the astrophysical r-process. In this talk, I will present a summary of the status of near-field cosmology in the era of large surveys and also recent results on the spectroscopic validation of low-metallicity stars selected from narrow-band photometry. These newly identified stars are adding key pieces of information to help stellar archaeologists solve this intricate Galactic chemo-dynamical puzzle.