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Chemical abundances of giant stars in the Crater stellar system
(EDP SCIENCES S A, 2015)
Aims. We obtained spectra for two giants of Crater (Crater J113613-105227 and Crater J113615-105244) using X-Shooter at the VLT, with the purpose of determining their radial velocities and metallicities.
The Gaia-ESO Survey: Spectroscopic-asteroseismic analysis of K2 stars in Gaia-ESO
(European Southern Observatory, 2020)
Context. The extensive stellar spectroscopic datasets that are available for studies in Galactic Archeaology thanks to, for example, the Gaia-ESO Survey, now benefit from having a significant number of targets that overlap ...
The mass-metallicity-kinematics relation of the stellar components of EAGLE galaxies
(Asociación Argentina de Astronomía, 2021-07)
In this work, we study the stellar mass -- stellar metallicity relation as a function of the morpho-kinematics of galaxies in {\sc{eagle}} cosmological simulations. According to our findings, at a given stellar mass ...
Detailed chemical abundances of distant RR Lyrae stars in the Virgo Stellar Stream
(2016)
We present the first detailed chemical abundances for distant RR Lyrae stars members of the Virgo Stellar Stream (VSS), derived from X- Shooter medium-resolution spectra. Sixteen elements from carbon to barium have been ...
Effects of the selection function on metallicity trends in spectroscopic surveys of the Milky Way
(EDP SCIENCES S A, 2017)
Context. Large spectroscopic Galactic surveys imply a selection function in the way they performed their target selection.
A high-precision chemical abundance analysis of the HAT-P-1 stellar binary: constraints on planet formation
(Oxford University PressOxford, 2014)
We present a high-precision, differential elemental abundance analysis of the HAT-P-1 stellar
binary based on high-resolution, high signal-to-noise ratio Keck/HIRES (High Resolution
Echelle Spectrometer) spectra. The ...
Using non-solar-scaled opacities to derive stellar parameters: Toward high-precision parameters and abundances
(EDP Sciences, 2018-12)
In an effort to improve spectroscopic methods of stellar parameters determination, we implemented non-solar-scaled opacities in a simultaneous derivation of fundamental parameters and abundances. We wanted to compare the ...
The Gaia-ESO survey: the non-universality of the age–chemical-clocks–metallicity relations in the Galactic disc
(European Southern Observatory, 2020)
Context. In the era of large spectroscopic surveys, massive databases of high-quality spectra coupled with the products of the Gaia satellite provide tools to outline a new picture of our Galaxy. In this framework, an ...
The lithium-rotation connection in the newly discovered young stellar stream Psc-Eri (Meingast 1)
(European Southern Observatory, 2020)
Context. As a fragile element, lithium is a sensitive probe of physical processes occurring in stellar interiors.
Aims. We aim to investigate the relationship between lithium abundance and rotation rate in low-mass members ...