37 citations · 152 across the 7 of their papers we have counts for
7 papers
Emerging trends in metallicity and lithium properties of debris disc stars
C. Chavero, R. de la Reza, L. Ghezzi +5
Dwarf stars with debris discs and planets appear to be excellent laboratories to study the core accretion theory of planets formation. These systems are however, insufficiently stu…
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 analysis of giant stars in the young open cluster NGC 3114
O. J. Katime Santrich, C. B. Pereira, N. A. Drake
Context: Open clusters are very useful targets for examining possible trends in galactocentric distance and age, especially when young and old open clusters are compared. Aims: We…
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…
Distribution of refractory and volatile elements in CoRoT exoplanet host stars
C. Chavero, R. de la Reza, R. C. Domingos +3
The relative distribution of abundances of refractory, intermediate, and volatile elements in stars with planets can be an important tool for investigating the internal migration o…