BIENAYMÉ, O.; GORBANEVA, T. I.; KOVTYUKH, V. V.; MISHENINA, T. V.; SOUBIRAN, C.; ORLOVA, L. F.

doi:10.1134/S1063772907050046

Metadatos

Mostrar el registro completo del ítem

Licencia de uso del documento

BIENAYMÉ, O.
Observatoire astronomique de Strasbourg [OAS]

GORBANEVA, T. I.
Odessa Astronomical Observatory

KOVTYUKH, V. V.
Odessa Astronomical Observatory

Idioma

Article de revue

Este ítem está publicado en

Astronomy Reports. 2007, vol. 51, n° 5, p. 382-393

Resumen en inglés

We have determined the atmospheric abundances of Y, Ba, La, Ce, Pr, Nd, and Eu for a sample of 171 giants selected as clump giants with metallicities [Fe/H] between ?0.7 and 0.3 dex, based on photometric criteria. In our analysis, we assumed local thermodynamic equilibrium and fit the parameters of model atmospheres to high-resolution (R = 42 000) echelle spectra with high signal-to-noise ratios. The Ba and Eu abundances were derived using synthetic spectra, including hyperfine structure. We find no significant difference in the abundances of s-or r-process neutron-capture elements between clump giants and ascending-branch giants selected by us earlier. We also analyze the relation between the abundances of neutron-capture elements and [Fe/H].< Leer menos

Metadatos

Licencia de uso del documento

Abundances of neutron-capture elements in atmospheres of cool giants

Idioma

Este ítem está publicado en

Resumen en inglés

DOI

Orígen

Centros de investigación