Elemental abundance studies of CP stars. The helium-weak stars HD 19400, HD 34797 and HD 35456

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An analysis of the abundances of the helium-weak CP stars HD 19400, HD 34797 and HD 35456, is presented using ATLAS9 model atmospheres and observational material taken with a REOSC echelle spectrograph attached to the Jorge Sahade 2.15 m telescope at CASLEO. The light elements are deficient except s...

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Autores principales: Alonso, M.S., López-García, Z., Malaroda, S., Leone, F.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2003
Materias:
Stars: abundances
Stars: chemically peculiar
Stars: individual: HD 19400
Stars: individual: HD 34797
Stars: individual: HD 35456
Galaxies
Helium
Hydrogen
Magnetic fields
Photometers
Spectrographs
Telescopes
Temperature
Abundance analysis
Photospheric temperatures
Stars
Astrophysics
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00046361_v402_n1_p331_Alonso
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paperaa:paper_00046361_v402_n1_p331_Alonso2023-06-12T16:40:43Z Elemental abundance studies of CP stars. The helium-weak stars HD 19400, HD 34797 and HD 35456 Astron. Astrophys. 2003;402(1):331-334 Alonso, M.S. López-García, Z. Malaroda, S. Leone, F. Stars: abundances Stars: chemically peculiar Stars: individual: HD 19400 Stars: individual: HD 34797 Stars: individual: HD 35456 Galaxies Helium Hydrogen Magnetic fields Photometers Spectrographs Telescopes Temperature Abundance analysis Photospheric temperatures Stars Astrophysics An analysis of the abundances of the helium-weak CP stars HD 19400, HD 34797 and HD 35456, is presented using ATLAS9 model atmospheres and observational material taken with a REOSC echelle spectrograph attached to the Jorge Sahade 2.15 m telescope at CASLEO. The light elements are deficient except silicon which is overabundant in HD 19400 and HD 34797. The iron peak elements are all overabundant by factors between 5 and 60. The heavy elements show an overabundance in the three stars studied. 2003 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00046361_v402_n1_p331_Alonso
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic Stars: abundances
Stars: chemically peculiar
Stars: individual: HD 19400
Stars: individual: HD 34797
Stars: individual: HD 35456
Galaxies
Helium
Hydrogen
Magnetic fields
Photometers
Spectrographs
Telescopes
Temperature
Abundance analysis
Photospheric temperatures
Stars
Astrophysics
spellingShingle Stars: abundances
Stars: chemically peculiar
Stars: individual: HD 19400
Stars: individual: HD 34797
Stars: individual: HD 35456
Galaxies
Helium
Hydrogen
Magnetic fields
Photometers
Spectrographs
Telescopes
Temperature
Abundance analysis
Photospheric temperatures
Stars
Astrophysics
Alonso, M.S.
López-García, Z.
Malaroda, S.
Leone, F.
Elemental abundance studies of CP stars. The helium-weak stars HD 19400, HD 34797 and HD 35456
topic_facet Stars: abundances
Stars: chemically peculiar
Stars: individual: HD 19400
Stars: individual: HD 34797
Stars: individual: HD 35456
Galaxies
Helium
Hydrogen
Magnetic fields
Photometers
Spectrographs
Telescopes
Temperature
Abundance analysis
Photospheric temperatures
Stars
Astrophysics
description An analysis of the abundances of the helium-weak CP stars HD 19400, HD 34797 and HD 35456, is presented using ATLAS9 model atmospheres and observational material taken with a REOSC echelle spectrograph attached to the Jorge Sahade 2.15 m telescope at CASLEO. The light elements are deficient except silicon which is overabundant in HD 19400 and HD 34797. The iron peak elements are all overabundant by factors between 5 and 60. The heavy elements show an overabundance in the three stars studied.
format Artículo
Artículo
publishedVersion
author Alonso, M.S.
López-García, Z.
Malaroda, S.
Leone, F.
author_facet Alonso, M.S.
López-García, Z.
Malaroda, S.
Leone, F.
author_sort Alonso, M.S.
title Elemental abundance studies of CP stars. The helium-weak stars HD 19400, HD 34797 and HD 35456
title_short Elemental abundance studies of CP stars. The helium-weak stars HD 19400, HD 34797 and HD 35456
title_full Elemental abundance studies of CP stars. The helium-weak stars HD 19400, HD 34797 and HD 35456
title_fullStr Elemental abundance studies of CP stars. The helium-weak stars HD 19400, HD 34797 and HD 35456
title_full_unstemmed Elemental abundance studies of CP stars. The helium-weak stars HD 19400, HD 34797 and HD 35456
title_sort elemental abundance studies of cp stars. the helium-weak stars hd 19400, hd 34797 and hd 35456
publishDate 2003
url http://hdl.handle.net/20.500.12110/paper_00046361_v402_n1_p331_Alonso
work_keys_str_mv AT alonsoms elementalabundancestudiesofcpstarstheheliumweakstarshd19400hd34797andhd35456
AT lopezgarciaz elementalabundancestudiesofcpstarstheheliumweakstarshd19400hd34797andhd35456
AT malarodas elementalabundancestudiesofcpstarstheheliumweakstarshd19400hd34797andhd35456
AT leonef elementalabundancestudiesofcpstarstheheliumweakstarshd19400hd34797andhd35456
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