Probing the early Milky Way with GHOST spectra of an extremely metal-poor star in the Galactic disc

Dovgal, Anya; A. Venn, Kim; Sestito, Federico; R. Hayes, Christian; W. McConnachie, Alan; F. Navarro, Julio; M. Placco, Vinicius; Starkenburg, Else; F. Martin, Nicolas; Pazder, John; Chiboucas, Kristin; Deibert, Emily; Gamen, R.; Heo, Jeong‐Eun; M. Kalari, V.; Martioli, Eder; Xu, Siyi; Díaz, Rubén; Gómez-Jiménez, Manuel; K. Henderson, David; Prado, Pablo; Quiroz, Carlos; Gordon Robertson, J; Ruiz-Carmona, Roque; Simpson, Chris; Urrutia, Cristian; Waller, Fletcher; A. M. Berg, Trystyn; Burley, Gregory; Hartman, Zachary; Ireland, Michael; Margheim, S.; Pérez, Gabriel; E. Thomas-Osip, J.

doi:10.1093/mnras/stad3673

Public

Probing the early Milky Way with GHOST spectra of an extremely metal-poor star in the Galactic disc

Published in Monthly Notices of the Royal Astronomical Society • Nov 27, 2023

Authors:

Anya Dovgal

Kim A. Venn

Federico Sestito

Abstract

ABSTRACT Pristine_183.6849 + 04.8619 (P1836849) is an extremely metal-poor ([Fe/H] = −3.3 ± 0.1) star on a prograde orbit confined to the Galactic disc. Such stars are rare and may have their origins in protogalactic fragments that formed the early Milky Way, in low-mass satellites accreted later, o...

Subject

Physics

Astrophysics

Milky Way

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