CNO, S, ZN and CU abundances in planet-harbouring stars

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2005

Autores

Ecuvillon, A (Autor) Outra; Israelian, G (Autor) Outra; N.C. Santos (Autor) Outra; Shchukina, N (Autor) Outra; Mayor, M (Autor) Outra; Rebolo, R (Autor) Outra

Ata de Conferência Internacional

Título: European Space Agency, (Special Publication) ESA SP

Páginas: 527-530

2004 Envisat and ERS Symposium

Salzburg, 6 September 2004 through 10 September 2004

Indexação

Scopus - 1 Citação

Outras Informações

ID Authenticus: P-007-DVR

Abstract (EN): We present a detailed and uniform study of CNO, S, Zn and Cu abundances in a large number of planet host stars, as well as in a homogeneous comparison sample of solar-type dwarfs with no known planetary-mass companions. We found that the abundance trends of planet-harbouring stars are the high [Fe/H] extensions of those traced by the comparison sample. Nitrogen abundance scales with that of iron in the metallicity range -0.6 < [Fe/H] < +0.4 with the slope 1.08 ± 0.05. Contrary to results obtained for the volatile N, we have obtained negative slopes in the [X/Fe] trends for the other three volatiles, C, S and Zn, in the metallicity range -0.8 < [Fe/H] < 0.5, with significantly negative slopes of -0.39 ± 0.04 and -0.35 ± 0.04 for C and S, respectively.

Idioma: Inglês

Tipo (Avaliação Docente): Científica