205 citations · 367 across the 8 of their papers we have counts for
5 papers · 1 filter
The s-process enriched star HD 55496: origin from a globular cluster or from the tidal disruption of a dwarf galaxy?
C. B. Pereira, N. A. Drake, F. Roig
We present a new abundance analysis of HD 55496, previously known as a metal-poor barium star. We found that HD 55496 has a metallicity [Fe/H] and is s-process enriched. W…
High-resolution spectroscopic observations of the new CEMP-s star CD-50776
M. Roriz, C. B. Pereira, N. A. Drake +2
Carbon enhanced metal poor (CEMP) stars are a particular class of low metalicity halo stars whose chemical analysis may provide important constrains to the chemistry evolution of t…
Chemical abundances and kinematics of barium stars
D. B. de Castro, C. B. Pereira, F. Roig +4
In this paper we present an homogeneous analysis of photospheric abundances based on high-resolution spectroscopy of a sample of 182 barium stars and candidates. We determined atmo…
CD-62\degree1346: an extreme halo or hypervelocity CH~star?
C. B. Pereira, E. Jilinski, N. A. Drake +4
High-velocity halo stars provide important information about the properties of the extreme Galactic halo. The study of unbound and bound Population II stars permits us to better es…
Chemical abundances and kinematics of a sample of metal-rich barium stars
C. B. Pereira, J. V. Sales Silva, C. Chavero +2
We determined the atmospheric parameters and abundance pattern for a sample of metal-rich barium stars. We used high-resolution optical spectroscopy. Atmospheric parameters and abu…