The metal-poor end of the Spite plateau

Context. The study of old, metal-poor stars deepens our knowledge on the early stages universe. In particular, these gives us a valuable insight into masses first massive and their emission ionising photons. Aims. We present detailed chemical analysis determination kinematic orbital properties sample 11 dwarf stars. These are stars, few them low lithium content. inspected whether other elements also anomalies. Methods. analysed high-resolution UVES spectra using Turbospectrum code to synthesise spectral lines profiles. This allowed derive Fe, C, Li, Na, Mg, Al, Si, CaI, CaII, ScII, TiII, Cr, Mn, Co, Ni, Sr, Ba. Results. find excellent coherence with reference First Stars sample. lithium-poor do not any anomaly abundance than lithium. Among Li-poor we show that CS 22882-027 is very probably blue-straggler. star 30302-145, which has Li compatible plateau, Si high Mn abundance. many aspects, it similar ? -poor HE 1424-0241, but less extreme. It could have been formed in satellite galaxy later accreted by Galaxy. hypothesis supported its kinematics.