Abundancias químicas de la estrella CP magnética HD 168733

A. COLLADO; Z. LÓPEZ GARCÍA; S. M. MALARODA

Córdoba

Jornada; Primeras Jornadas sobre Astrofísica Estelar; 2008

Observatorio Astronómico de la Universidad Nacional de Córdoba (OAC)

A detailed abundance analysis has been carried out for the magnetic CP star HD168733, using high-resolution spectra obtained with the EBASIM echelle spectrograph at the CASLEO 2.1-m telescope (Argentina). The spectral coverage is 382-700 nm. HD168733 is neither a silicon nor a mercury-manganese star. Compared to the Sun, C, N and S are slightly overabundant, while Mg is deficient, P and Si are normal and Cl is overabundant. The iron peak elements Sc,  Ti, Cr and Fe are all overabundant. Lines of Ti III and Fe III are also identified. HD168733 shows a great overabundance of Ga, Sr, Y, Zr, Xe, Pt, Hg and of some rare earths.