Elemental abundance study of the CP star HD 206653

¹ Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, 1900 La Plata, Argentina
² Complejo Astronómico El Leoncito, C.C 467, 5400 San Juan, Argentina
³ Member of the Carrera del Investigador Científico, CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina
⁴ Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de San Juan, Argentina
⁵ Comisión de Investigaciones Científicas de la Provincia de Buenos Aires, Argentina

Corresponding author: H. Levato, hlevato@casleo.gov.ar

Received: 30 October 2001
Accepted: 11 April 2002

Abstract

An analysis of the abundances of the Silicon star HD 206653 is presented using an ATLAS9 model atmosphere and observational material taken with a REOSC echelle spectrograph attached to the Jorge Sahade 2.15 m telescope at CASLEO. The light elements are solar or deficient except silicon which is overabundant by a factor of 5. The iron peak elements are all overabundant by factors between 10 and 50. Sr and Y are around 1000 times the solar values. Among the Rare Earths only Ce and Eu are identified; both are overabundant by large factors.