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First stars V - Abundance patterns from C to Zn and supernova yields in the early Galaxy
In the framework of the ESO Large Programme "First Stars", very high-quality spectra of some 70 very metal-poor dwarfs and giants were obtained with the ESO VLT and UVES spectrograph. These stars areExpand
Review of Particle Physics, 2016-2017
The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,283 new measurements from 899 papers, we list, evaluate, and average measured properties ofExpand
An extremely primitive star in the Galactic halo
It is shown that low-mass stars can be formed at very low metallicity, that is, below the critical value of Z, which implies that the stellar material must have experienced temperatures above two million kelvin in its history, given that this is necessary to destroy lithium. Expand
First stars VI - Abundances of C, N, O, Li, and mixing in extremely metal-poor giants. Galactic evolution of the light elements
We have investigated the poorly-understood origin of nitrogen in the early Galaxy by determining N abundances from the NH band at 336 nm in 35 extremely metal-poor halo giants, with carbon and oxygenExpand
Measurement of stellar age from uranium decay
The observation of this cosmochronometer gives the most direct age determination of the Galaxy, and with improved theoretical and laboratory data, it will provide a highly precise lower limit to the age of the Universe. Expand
The metal-poor end of the Spite plateau - I. Stellar parameters, metallicities, and lithium abundances
Context. The primordial nature of the Spite plateau is at odds with the WMAP satellite measurements, implying a primordial Li production at least three times higher than observed. It has also beenExpand
The primordial lithium abundance
Lithium abundances in a selected sample of halo stars have been revised by using the new accurate IRFM effective temperatures by Alonso, Arribas & Mart´onez-Roger (1996a). From 41 plateau stars (TeffExpand
First stars VIII. Enrichment of the neutron-capture elements in the early Galaxy
Context: Extremely metal-poor (EMP) stars in the halo of the Galaxy are sensitive probes of the production of the first heavy elements and the efficiency of mixing in the early interstellar medium.Expand
The O-Na and Mg-Al anticorrelations in turn-off and early subgiants in globular clusters
High dispersion spectra (R > 40 000) for a quite large number of stars at the main sequence turn-o and at the base of the giant branch in NGC 6397 and NGC 6752 were obtained with the UVES on KueyenExpand
First stars VII - Lithium in extremely metal poor dwarfs
Context. The primordial lithium abundance is a key prediction of models of big bang nucleosynthesis, and its abundance in metal-poor dwarfs (the Spite plateau) is an important, independentExpand