A chemo-dynamical analysis of 115 metal-poor candidate stars selected from the narrow-band Pristine photometric survey is presented based on CFHT high-resolution ESPaDOnS spectroscopy. We have discovered 28 new bright (V<15) stars with [Fe/H]<-2.5 and 5 with [Fe/H]0, and a metal-poor star with very low [Mg/Fe]. The kinematics and orbits for all of the highly probable metal-poor candidates are determined by combining our precision radial velocities with Gaia DR2 proper motions. Some stars show unusual kinematics for their chemistries, including planar orbits, unbound orbits, and highly elliptical orbits that plunge deeply into the Galactic bulge (R_peri_<0.5kpc); also, eight stars have orbital energies and actions consistent with the Gaia-Enceladus accretion event. This paper contributes to our understanding of the complex chemo-dynamics of the metal-poor Galaxy, and increases the number of known bright metal-poor stars available for detailed nucleosynthetic studies.

Cone search capability for table J/MNRAS/492/3241/table1 (Metal-poor targets (115) from the original Pristine survey footprint)

Cone search capability for table J/MNRAS/492/3241/table2 (Gaia DR2 parallaxes, and the derived distances, temperatures, and surface gravities from the Bayesian inference method)

Cone search capability for table J/MNRAS/492/3241/table4 (Iron-group and heavy element abundances in the new 28 metal-poor stars and our analysis of HD122563)

Cone search capability for table J/MNRAS/492/3241/table5 (Light element abundances in the new 28 metal-poor stars and our analysis of HD122563)

Cone search capability for table J/MNRAS/492/3241/table6 (Total systematic errors per element species due to the stellar parameters (T, logg, [Fe/H]), added in quadrature)

Cone search capability for table J/MNRAS/492/3241/tablea1 (Orbit and Action parameters for the 70 metal-poor candidates from the Pristine survey)