Context. The effective temperature scale of FGK stars, especially at the lowest metallicities
remains a major problem in the chemical abundance analysis of metal-poor stars. Aims. We …

We present a fully differential chemical abundance analysis using very high resolution
(λ/δλ≳ 85, 000) and very high signal-to-noise (S/N∼ 800 on average) HARPS and UVES …

The CARMENES instrument is a pair of high-resolution (R⪆ 80,000) spectrographs covering
the wavelength range from 0.52 to 1.71 μm, optimized for precise radial velocity …

Context. ESPRESSO guaranteed time observations (GTOs) at the 8.2 m VLT telescope were
performed to look for Earth-like exoplanets in the habitable zone of nearby stars. Barnard's …

Context. Detailed chemical abundances of volatile and refractory elements have been
discussed in the context of terrestrial-planet formation during in past years. Aims. The …

Context. We performed a uniform and detailed abundance analysis of 12 refractory elements
(Na, Mg, Al, Si, Ca, Ti, Cr, Ni, Co, Sc, Mn, and V) for a sample of 1111 FGK dwarf stars from …

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 …

Context. ESPRESSO is the new high-resolution spectrograph of ESO's Very Large
Telescope (VLT). It was designed for ultra-high radial-velocity (RV) precision and extreme …

This paper gives an overview of the CARMENES instrument and of the survey that will be
carried out with it during the first years of operation. CARMENES (Calar Alto high-Resolution …

Context. Most globular clusters are believed to host a single stellar population. They can
thus be considered a good place to study the Spite plateau and to search for possible …