51 citations
5 papers
Abundances of Mn, Co and Eu in a sample of 20 F-G disk stars: the influence of hyperfine structure splitting
E. F. del Peloso, K. Cunha, L. da Silva +1
We present Mn, Co and Eu abundances for a sample of 20 disk F and G dwarfs and subgiants with metallicities in the range -0.8 <= [Fe/H] <= +0.3. We investigate the influence of hyp…
The age of the Galactic thin disk from Th/Eu nucleocosmochronology III. Extended sample
E. F. del Peloso, L. da Silva, G. F. Porto de Mello +1
The first determination of the age of the Galactic thin disk from Th/Eu nucleocosmochronology was accomplished by us in Papers I and II. The present work aimed at reducing the age…
A Link Between the Semi-Major Axis of Extrasolar Gas Giant Planets and Stellar Metallicity
R. Pinotti, L. Arany-Prado, W. Lyra +1
The fact that most extrasolar planets found to date are orbiting metal-rich stars lends credence to the core accretion mechanism of gas giant planet formation over its competitor,…
The age of the Galactic thin disk from Th/Eu nucleocosmochronology II. Chronological analysis
E. F. del Peloso, L. da Silva, L. I. Arany-Prado
The purpose of this work is to resume investigation of Galactic thin disk dating using nucleocosmochronology with Th/Eu stellar abundance ratios, a theme absent from the literature…
The age of the Galactic thin disk from Th/Eu nucleocosmochronology I. Determination of [Th/Eu] abundance ratios
E. F. del Peloso, L. da Silva, G. F. Porto de Mello
The purpose of this work is to resume investigation of Galactic thin disk dating using nucleocosmochronology with Th/Eu stellar abundance ratios, a theme absent from the literature…