Volatile and Refractory Abundances of Solar Analogs with Planets

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2013

Autores

Gonzalez Hernandez, JIG (Autor) Outra; Delgado Mena, E (Autor) FCUP; Sousa, SG (Autor) FCUP; Israelian, G (Autor) Outra; N.C. Santos (Autor) FCUP; Udry, S (Autor) Outra

Ata de Conferência Internacional

Título: NEW QUESTS IN STELLAR ASTROPHYSICS III: A PANCHROMATIC VIEW OF SOLAR-LIKE STARS, WITH AND WITHOUT PLANETS

Páginas: 97-104

3rd International Conference on New Quests in Stellar Astrophysics: A Panchromatic View of Solar-like Stars With and Without Planets

Puerto Vallarta, MEXICO, MAR 12-16, 2012

Indexação

ISI Web of Knowledge - 1 Citação

Outras Informações

ID Authenticus: P-008-KP0

Abstract (EN): We present a detailed abundance analysis of high-quality HARPS, UVES and UES spectra of 95 solar analogs, 33 with and 62 without detected planets. These spectra have S/N > 350. We investigate the possibility that the presence of terrestrial planets could affect the volatile-to-refratory abundance ratios. We do not see clear differences between stars with and without planets, either in the only seven solar twins or even when considering the whole sample of 95 solar analogs in the metallicity range -0.3 < [Fe/H] < 0.5. We demonstrate that after removing the Galactic chemical evolution effects the possible differences between stars with and without planets in these samples practically disappear and the volatile-torefractory abundance ratios are very similar to solar values. We investigate the abundance ratios of volatile and refractory elements versus the condensation temperature of this sample of solar analogs, in particular, paying a special attention to those stars harbouring super-Earth-like planets.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8