862 citations · 13.9k across the 156 of their papers we have counts for
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TOPoS: III. An ultra iron-poor multiple CEMP system
E. Caffau, P. Bonifacio, M. Spite +15
One of the primary objectives of the TOPoS survey is to search for the most metal-poor stars. Our search has led to the discovery of one of the most iron-poor objects known, SDSS\,…
Observational Constraints on First-Star Nucleosynthesis. II. Spectroscopy of an Ultra Metal-Poor CEMP-no Star
Vinicius M. Placco, Anna Frebel, Timothy C. Beers +6
We report on the first high-resolution spectroscopic analysis of HE0020-1741, a bright (V=12.9), ultra metal-poor ([Fe/H] = -4.1), carbon-enhanced ([C/Fe] = +1.7) star selected fro…
The Hamburg/ESO R-process Enhanced Star survey (HERES) XI. The highly -process-enhanced star CS 29497-004
V. Hill, N. Christlieb, T. C. Beers +5
We report an abundance analysis for the highly r-process-enhanced (r-II) star CS 29497-004, a very metal-poor giant with Teff = 5013K and [Fe/H]=-2.85, whose nature was initially d…
Does the chemical signature of TYC 8442-1036-1 originate from a rotating massive star that died in a faint explosion?
G. Cescutti, M. Valentini, P. François +4
Context. We have recently investigated the origin of chemical signatures observed in Galactic halo stars by means of a stochastic chemical evolution model. We have found that rotat…
The chemical composition of red giants in 47 Tucanae. II. Magnesium isotopes and pollution scenarios
A. O. Thygesen, L. Sbordone, H. -G. Ludwig +6
The phenomenon of multiple populations in globular clusters is still far from understood, with several proposed mechanisms to explain the observed behaviour. The study of elemental…