Elemental abundance study of the CP star HD 206653

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 over...

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Guardado en:
Detalles Bibliográficos
Publicado: 2002
Materias:
Stars: abundances
Stars: chemically peculiar
Stars: individual: HD 206653
Airborne telescopes
Cerium
Europium
Mathematical models
Rare earths
Silicon
Solar system
Iron peak elements
Light elements
Stars
Astrophysics
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v392_n2_p613_AlbaceteColombo
http://hdl.handle.net/20.500.12110/paper_00046361_v392_n2_p613_AlbaceteColombo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario: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.

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