160 citations · 1.1k across the 24 of their papers we have counts for
6 papers · 1 filter
TOPoS: I. Survey design and analysis of the first sample
E. Caffau, P. Bonifacio, L. Sbordone +14
The metal-weak tail of the metallicity distribution function (MDF) of the Galactic Halo stars contains crucial information on the formation mode of the first generation of stars. T…
X-Shooter GTO: evidence for a population of extremely metal-poor, alpha-poor stars
E. Caffau, P. Bonifacio, P. Francois +12
The extremely metal-poor stars are the direct descendants of the first generation stars. They carry the chemical signature of the pristine Universe at the time they formed, shortly…
Stellar granulation as seen in disk-integrated intensity. I. Simplified theoretical modeling
R. Samadi, K. Belkacem, H. -G. Ludwig
The solar granulation is known for a long time to be a surface manifestation of convection. Thanks to the current space-borne missions CoRoT and Kepler, it is now possible to obser…
The photospheric solar oxygen project: II. Non-concordance of the oxygen abundance derived from two forbidden lines
Elisabetta Caffau, Hans-G. Ludwig, Jean-M. Malherbe +3
In the Sun, the two forbidden [OI] lines at 630 and 636 nm were previously found to provide discrepant oxygen abundances. aims: We investigate whether this discrepancy is peculiar…
Carbon-enhanced metal-poor stars: the most pristine objects?
Monique Spite, E. Caffau, Piercarlo Bonifacio +4
Carbon-enhanced metal poor stars (CEMP) form a significant proportion of the metal-poor stars, their origin is not well understood. Three very metal-poor C-rich turnoff stars were…
Convective line shifts for the Gaia RVS from the CIFIST 3D model atmosphere grid
C. Allende Prieto, L. Koesterke, H. -G. Ludwig +2
To derive space velocities of stars along the line of sight from wavelength shifts in stellar spectra requires accounting for a number of second-order effects. For most stars, grav…