Navegação Ciências Exatas e da Terra por Autor "Maia, Marcelo Tucci"
Resultados 1-4 de 4
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18 Sco : a solar twin rich in refractory and neutron-capture elements, implications for chemical tagging
(2014) [Artigo de periódico]We study with unprecedented detail the chemical composition and stellar parameters of the solar twin 18 Sco in a strictly differential sense relative to the Sun. Our study is mainly based on high-resolution (R ∼ 110,000), ... -
The solar twin planet search I. Fundamental parameters of the stellar sample
(2014) [Artigo de periódico]Context. We are carrying out a search for planets around a sample of solar twin stars using the HARPS spectrograph. The goal of this project is to exploit the advantage offered by solar twins to obtain chemical abundances ... -
The solar twin planet search II. A Jupiter twin around a solar twin
(2015) [Artigo de periódico]Context. With high-precision radial velocity surveys reaching a su ciently long time baseline, the domain of long-period planet detections has recently opened up. The search for Jupiter-like planets is especially important ... -
The solar twin planet search : V. close-in, low-mass planet candidates and evidence of planet accretion in the solar twin HIP 68468
(2017) [Artigo de periódico]Context. More than two thousand exoplanets have been discovered to date. Of these, only a small fraction have been detected around solar twins, which are key stars because we can obtain accurate elemental abundances ...
