Resumo

COLLADO, A.  e  LOPEZ-GARCIA, Z.. Chemical Abundances of the magnetic CP star HD 168733. Rev. mex. astron. astrofis [online]. 2009, vol.45, n.1, pp.95-105. ISSN 0185-1101.

A detailed abundance analysis has been carried out for the magnetic CP star HD 168733 using high-resolution spectra obtained with the EBASIM echelle spectrograph at the 2.1 m CASLEO telescope in Argentina. The spectral coverage is 382-700 nm. It is neither a silicon nor a mercury-manganese star. Compared to the Sun, C and N are slightly overabundant, while Mg and S are deficient, Si is normal and P and Cl are overabundant. The iron peak elements Sc, Ti, Cr and Fe are overabundant. Lines of Ti III and Fe III are also identified. HD 168733 shows a great overabundance of Ga, Sr, Y, Zr, Xe, Pt, Hg and of some rare earths.

Palavras-chave : stars: abundances; stars: chemically peculiar; stars: individual (HD 168733).

        · resumo em Espanhol     · texto em Inglês     · Inglês ( pdf )