TY - JOUR
T1 - The Pristine survey -- XII
T2 - Gemini-GRACES chemo-dynamical study of newly discovered extremely metal-poor stars in the Galaxy
AU - Kielty, Collin L.
AU - Venn, Kim A.
AU - Sestito, Federico
AU - Starkenburg, Else
AU - Martin, Nicolas F.
AU - Aguado, David S.
AU - Arentsen, Anke
AU - Fabbro, Sébastien
AU - González Hernández, Jonay I.
AU - Hill, Vanessa
AU - Jablonka, Pascale
AU - Lardo, Carmela
AU - Mashonkina, Lyudmila I.
AU - Navarro, Julio F.
AU - Sneden, Chris
AU - Thomas, Guillaume F.
AU - Youakim, Kris
AU - Bialek, Spencer
AU - Sánchez-Janssen, Rubén
PY - 2021/6/25
Y1 - 2021/6/25
N2 - High-resolution optical spectra of 30 metal-poor stars selected from the
\Pristine\ survey are presented, based on observations taken with the
Gemini Observatory GRACES spectrograph. Stellar parameters \teff and
\logg are determined using a Gaia DR2 colour-temperature calibration and
surface gravity from the Stefan-Boltzmann equation. GRACES spectra are
used to determine chemical abundances (or upper-limits) for 20 elements
(Li, O, Na, Mg, K, Ca, Ti, Sc, Cr, Mn, Fe, Ni, Cu, Zn, Y, Zr, Ba, La,
Nd, Eu). These stars are confirmed to be metal-poor ([Fe/H]$
AB - High-resolution optical spectra of 30 metal-poor stars selected from the
\Pristine\ survey are presented, based on observations taken with the
Gemini Observatory GRACES spectrograph. Stellar parameters \teff and
\logg are determined using a Gaia DR2 colour-temperature calibration and
surface gravity from the Stefan-Boltzmann equation. GRACES spectra are
used to determine chemical abundances (or upper-limits) for 20 elements
(Li, O, Na, Mg, K, Ca, Ti, Sc, Cr, Mn, Fe, Ni, Cu, Zn, Y, Zr, Ba, La,
Nd, Eu). These stars are confirmed to be metal-poor ([Fe/H]$
KW - Astrophysics - Astrophysics of Galaxies
KW - Astrophysics - Solar and Stellar Astrophysics
M3 - Article
SN - 0035-8711
VL - 506
SP - 1438
EP - 1461
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
ER -