Las estrellas CP con Galio en el UV.I. HD 168733

A. COLLADO; Z. LÓPEZ GARCÍA; H. LEVATO; S. MALARODA

Capilla del Monte, Córdoba, Argentina

Congreso; Reunión Anual de la Asociación Argentina de Astronomía; 2006

Observatorio Astronómico de la Universidad Nacional de Córdoba (OAC)

HD 168733 is a magnetic CP star with an unusual spectrum. It was not possible to assign this star to the Si or HgMn group. Jaschek & Jaschek (A&A, 171, 380, 1987) have included this star in a list of objects having strong UV Gallium lines. In order to get some clues about the real nature of this star, we are performing an elemental abundance analysis of this star using spectrograms obtained with EBASIM spectrograph attached to CASLEO 2.15 m telescope. The reduction of the observational material and the measurements of the equivalent widths were carried out using the appropriate IRAF tasks. The atmospheric parameters Teff and log g were determined using uvbybeta photometry and TemLogG code with the corrections suggested by Adelman & Rayle (A&A 447, 685, 2000) for magnetic CP stars. The adopted values are: Teff = 13274 K, log g = 3.58. The chemical abundances are being calculating using WIDTH9 code.