Metal Poor Star
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. Search for very metal-poor stars based on carbon over-abundance / Busca por estrelas muito pobres em metais baseada no enriquecimento em carbono
The main goal of this work is to show that is possible to search for metal-poor stars based on the premise that a large fraction of these will be carbon-rich. This hypothesis had not yet been verified because many of the so-called CEMP (Carbon Enhanced Metal-Poor) stars were neglected in previous studies due to the design of the search for metal-poor stars w
Publicado em: 2010
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2. The origin of carbon in the Universe - insights from observations of metal-poor stars in Magellanic Clouds / A origem do carbono no universo - insights a partir de observações de estrelas pobres em metais nas nuvens de Magalhães
Neste projeto de pesquisa planeja-se obter indícios da correlação entre o conteúdo metálico estelar deduzido para a Via Láctea e os indíces metálicos obtidos para as Nuvens de Magalhães. O ponto de apoio para tal comparação é que cada encontro deixará importantes traços na eficiência de formação dos membros do tripleto. À medida que os enco
Publicado em: 2009
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3. Is there a Population II analogy to the F star lithium dip?
Observers have found a small number of lithium-depleted halo stars in the temperature range of the Spite plateau. The current status of the mass-loss hypothesis for producing the observed lithium dip in Population (Pop) I stars is briefly discussed and extended to Pop II stars as a possible explanation for these halo objects. Based on detections of F-type ma
The National Academy of Sciences of the USA.