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Context. Extremely metal-poor (EMP) stars provide us with indirect information on the first generations of massive stars. The TOPoS survey has been designed to increase the census of these stars and to provide a chemical inventory that is as detailed as possible. Aims. Seven of the most iron-poor...


Bonifacio, P.Caffau, E.Spite, M.Spite, F.Sbordone, L.Monaco, L.François, P.Plez, B.Molaro, P.Gallagher, A.J.Cayrel, R.Christlieb, N.Klessen, R.S.Koch, A.Ludwig, H.-G.Steffen, M.Zaggia, S.Abate, C.[TOPoS: IV. Chemical abundances from high-resolution observations of seven extremely metal-poor stars]TOPoS: IV. Chemical abundances from high-resolution observations of seven extremely metal-poor stars

Context. Stellar radial velocities play a fundamental role in the discovery of extrasolar planets and the measurement of their physical parameters as well as in the study of stellar physical properties. Aims. We investigate the impact of the solar activity on the radial velocity of the Sun usin...


Lanza, A. F.Molaro, P.Monaco, L.Haywood, R. D.[Long-term radial-velocity variations of the Sun as a star: The HARPS view]Long-term radial-velocity variations of the Sun as a star: The HARPS view

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