Line identification in high-resolution, near-infrared CRIRES spectra of chemically peculiar and Herbig Ae stars

Autores
Hubrig, S.; Castelli, F.; Gonzalez, Jorge Federico; Elkin, V. G.; Mathys, G.; Cowley, C. R.; Wolff, B.; Schöller, M.
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Context. Contrary to the late-type stars, our knowledge of atomic transitions in intermediate-mass stars is still very poor. The recent availability of ESO's high-resolution spectrograph CRIRES offers now the opportunity to study numerous spectral features in the near-IR in intermediate-mass main-sequence and pre-main-sequence stars. Aims. The aim of the study is to explore the diagnostic potential of near-IR spectral regions. We carry out the first line identification in a few spectral regions for the two strongly magnetic Ap stars γ Equ and HD 154708, and their potential precursors two pre-main sequence Herbig Ae/Be stars HD 101412 and 51 Oph. Methods. High-resolution CRIRES spectra were obtained in three spectral regions, two regions around 1 μm and one region around 1.57 μm containing magnetically sensitive Fe i lines. To study the spectral line variability in the Herbig Ae star HD 101412, the observations were collected on six different rotation phases. All currently available atomic line lists were involved to properly identify the detected spectral features. Results. The largest number of near-IR spectral features was detected and identified in the well-studied magnetic Ap star γ Equ. Nearly 30% of the spectral lines in the Ap star HD 154708 with one of the strongest magnetic fields known among the Ap stars of the order of 25 kG, remain unidentified due to a lack of atomic data. Only very few lines belonging to the rare earth element group have been identified in both Ap stars. A number of spectral lines including the Ce iii and Dy ii lines appear magnetically split due to the presence of a strong magnetic field in their atmospheres. The content of the spectra of the Herbig Ae/Be stars HD 101412 and 51 Oph is rather unexciting. Variable behaviour of lines of the elements He, N, Mg, Si, and Fe over the rotation period in the spectra of HD 101412 confirm our previous finding of variability in the optical region. Due to the very fast rotation of 51 Oph, only a few spectral lines have been identified with certainty.
Fil: Hubrig, S.. Leibniz Institut für Astrophysik Potsdam; Alemania
Fil: Castelli, F.. Istituto Nazionale di Astrofisica; Italia
Fil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Elkin, V. G.. University of Central Lancashire; Reino Unido
Fil: Mathys, G.. European Southern Observatory; Chile
Fil: Cowley, C. R.. University of Michigan; Estados Unidos
Fil: Wolff, B.. European Southern Observatory; Alemania
Fil: Schöller, M.. European Southern Observatory; Alemania
Materia
ATOMIC DATA
STARS: ATMOSPHERES
STARS: CHEMICALLY PECULIAR
STARS: MAGNETIC FIELD
STARS: PRE-MAIN SEQUENCE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/69125

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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Line identification in high-resolution, near-infrared CRIRES spectra of chemically peculiar and Herbig Ae starsHubrig, S.Castelli, F.Gonzalez, Jorge FedericoElkin, V. G.Mathys, G.Cowley, C. R.Wolff, B.Schöller, M.ATOMIC DATASTARS: ATMOSPHERESSTARS: CHEMICALLY PECULIARSTARS: MAGNETIC FIELDSTARS: PRE-MAIN SEQUENCEhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context. Contrary to the late-type stars, our knowledge of atomic transitions in intermediate-mass stars is still very poor. The recent availability of ESO's high-resolution spectrograph CRIRES offers now the opportunity to study numerous spectral features in the near-IR in intermediate-mass main-sequence and pre-main-sequence stars. Aims. The aim of the study is to explore the diagnostic potential of near-IR spectral regions. We carry out the first line identification in a few spectral regions for the two strongly magnetic Ap stars γ Equ and HD 154708, and their potential precursors two pre-main sequence Herbig Ae/Be stars HD 101412 and 51 Oph. Methods. High-resolution CRIRES spectra were obtained in three spectral regions, two regions around 1 μm and one region around 1.57 μm containing magnetically sensitive Fe i lines. To study the spectral line variability in the Herbig Ae star HD 101412, the observations were collected on six different rotation phases. All currently available atomic line lists were involved to properly identify the detected spectral features. Results. The largest number of near-IR spectral features was detected and identified in the well-studied magnetic Ap star γ Equ. Nearly 30% of the spectral lines in the Ap star HD 154708 with one of the strongest magnetic fields known among the Ap stars of the order of 25 kG, remain unidentified due to a lack of atomic data. Only very few lines belonging to the rare earth element group have been identified in both Ap stars. A number of spectral lines including the Ce iii and Dy ii lines appear magnetically split due to the presence of a strong magnetic field in their atmospheres. The content of the spectra of the Herbig Ae/Be stars HD 101412 and 51 Oph is rather unexciting. Variable behaviour of lines of the elements He, N, Mg, Si, and Fe over the rotation period in the spectra of HD 101412 confirm our previous finding of variability in the optical region. Due to the very fast rotation of 51 Oph, only a few spectral lines have been identified with certainty.Fil: Hubrig, S.. Leibniz Institut für Astrophysik Potsdam; AlemaniaFil: Castelli, F.. Istituto Nazionale di Astrofisica; ItaliaFil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; ArgentinaFil: Elkin, V. G.. University of Central Lancashire; Reino UnidoFil: Mathys, G.. European Southern Observatory; ChileFil: Cowley, C. R.. University of Michigan; Estados UnidosFil: Wolff, B.. European Southern Observatory; AlemaniaFil: Schöller, M.. European Southern Observatory; AlemaniaEDP Sciences2012-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/69125Hubrig, S.; Castelli, F.; Gonzalez, Jorge Federico; Elkin, V. G.; Mathys, G.; et al.; Line identification in high-resolution, near-infrared CRIRES spectra of chemically peculiar and Herbig Ae stars; EDP Sciences; Astronomy and Astrophysics; 542; 6-2012; 1-16; A310004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201218968info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2012/06/aa18968-12/aa18968-12.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:47:09Zoai:ri.conicet.gov.ar:11336/69125instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:47:09.758CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Line identification in high-resolution, near-infrared CRIRES spectra of chemically peculiar and Herbig Ae stars
title Line identification in high-resolution, near-infrared CRIRES spectra of chemically peculiar and Herbig Ae stars
spellingShingle Line identification in high-resolution, near-infrared CRIRES spectra of chemically peculiar and Herbig Ae stars
Hubrig, S.
ATOMIC DATA
STARS: ATMOSPHERES
STARS: CHEMICALLY PECULIAR
STARS: MAGNETIC FIELD
STARS: PRE-MAIN SEQUENCE
title_short Line identification in high-resolution, near-infrared CRIRES spectra of chemically peculiar and Herbig Ae stars
title_full Line identification in high-resolution, near-infrared CRIRES spectra of chemically peculiar and Herbig Ae stars
title_fullStr Line identification in high-resolution, near-infrared CRIRES spectra of chemically peculiar and Herbig Ae stars
title_full_unstemmed Line identification in high-resolution, near-infrared CRIRES spectra of chemically peculiar and Herbig Ae stars
title_sort Line identification in high-resolution, near-infrared CRIRES spectra of chemically peculiar and Herbig Ae stars
dc.creator.none.fl_str_mv Hubrig, S.
Castelli, F.
Gonzalez, Jorge Federico
Elkin, V. G.
Mathys, G.
Cowley, C. R.
Wolff, B.
Schöller, M.
author Hubrig, S.
author_facet Hubrig, S.
Castelli, F.
Gonzalez, Jorge Federico
Elkin, V. G.
Mathys, G.
Cowley, C. R.
Wolff, B.
Schöller, M.
author_role author
author2 Castelli, F.
Gonzalez, Jorge Federico
Elkin, V. G.
Mathys, G.
Cowley, C. R.
Wolff, B.
Schöller, M.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ATOMIC DATA
STARS: ATMOSPHERES
STARS: CHEMICALLY PECULIAR
STARS: MAGNETIC FIELD
STARS: PRE-MAIN SEQUENCE
topic ATOMIC DATA
STARS: ATMOSPHERES
STARS: CHEMICALLY PECULIAR
STARS: MAGNETIC FIELD
STARS: PRE-MAIN SEQUENCE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Context. Contrary to the late-type stars, our knowledge of atomic transitions in intermediate-mass stars is still very poor. The recent availability of ESO's high-resolution spectrograph CRIRES offers now the opportunity to study numerous spectral features in the near-IR in intermediate-mass main-sequence and pre-main-sequence stars. Aims. The aim of the study is to explore the diagnostic potential of near-IR spectral regions. We carry out the first line identification in a few spectral regions for the two strongly magnetic Ap stars γ Equ and HD 154708, and their potential precursors two pre-main sequence Herbig Ae/Be stars HD 101412 and 51 Oph. Methods. High-resolution CRIRES spectra were obtained in three spectral regions, two regions around 1 μm and one region around 1.57 μm containing magnetically sensitive Fe i lines. To study the spectral line variability in the Herbig Ae star HD 101412, the observations were collected on six different rotation phases. All currently available atomic line lists were involved to properly identify the detected spectral features. Results. The largest number of near-IR spectral features was detected and identified in the well-studied magnetic Ap star γ Equ. Nearly 30% of the spectral lines in the Ap star HD 154708 with one of the strongest magnetic fields known among the Ap stars of the order of 25 kG, remain unidentified due to a lack of atomic data. Only very few lines belonging to the rare earth element group have been identified in both Ap stars. A number of spectral lines including the Ce iii and Dy ii lines appear magnetically split due to the presence of a strong magnetic field in their atmospheres. The content of the spectra of the Herbig Ae/Be stars HD 101412 and 51 Oph is rather unexciting. Variable behaviour of lines of the elements He, N, Mg, Si, and Fe over the rotation period in the spectra of HD 101412 confirm our previous finding of variability in the optical region. Due to the very fast rotation of 51 Oph, only a few spectral lines have been identified with certainty.
Fil: Hubrig, S.. Leibniz Institut für Astrophysik Potsdam; Alemania
Fil: Castelli, F.. Istituto Nazionale di Astrofisica; Italia
Fil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Elkin, V. G.. University of Central Lancashire; Reino Unido
Fil: Mathys, G.. European Southern Observatory; Chile
Fil: Cowley, C. R.. University of Michigan; Estados Unidos
Fil: Wolff, B.. European Southern Observatory; Alemania
Fil: Schöller, M.. European Southern Observatory; Alemania
description Context. Contrary to the late-type stars, our knowledge of atomic transitions in intermediate-mass stars is still very poor. The recent availability of ESO's high-resolution spectrograph CRIRES offers now the opportunity to study numerous spectral features in the near-IR in intermediate-mass main-sequence and pre-main-sequence stars. Aims. The aim of the study is to explore the diagnostic potential of near-IR spectral regions. We carry out the first line identification in a few spectral regions for the two strongly magnetic Ap stars γ Equ and HD 154708, and their potential precursors two pre-main sequence Herbig Ae/Be stars HD 101412 and 51 Oph. Methods. High-resolution CRIRES spectra were obtained in three spectral regions, two regions around 1 μm and one region around 1.57 μm containing magnetically sensitive Fe i lines. To study the spectral line variability in the Herbig Ae star HD 101412, the observations were collected on six different rotation phases. All currently available atomic line lists were involved to properly identify the detected spectral features. Results. The largest number of near-IR spectral features was detected and identified in the well-studied magnetic Ap star γ Equ. Nearly 30% of the spectral lines in the Ap star HD 154708 with one of the strongest magnetic fields known among the Ap stars of the order of 25 kG, remain unidentified due to a lack of atomic data. Only very few lines belonging to the rare earth element group have been identified in both Ap stars. A number of spectral lines including the Ce iii and Dy ii lines appear magnetically split due to the presence of a strong magnetic field in their atmospheres. The content of the spectra of the Herbig Ae/Be stars HD 101412 and 51 Oph is rather unexciting. Variable behaviour of lines of the elements He, N, Mg, Si, and Fe over the rotation period in the spectra of HD 101412 confirm our previous finding of variability in the optical region. Due to the very fast rotation of 51 Oph, only a few spectral lines have been identified with certainty.
publishDate 2012
dc.date.none.fl_str_mv 2012-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/69125
Hubrig, S.; Castelli, F.; Gonzalez, Jorge Federico; Elkin, V. G.; Mathys, G.; et al.; Line identification in high-resolution, near-infrared CRIRES spectra of chemically peculiar and Herbig Ae stars; EDP Sciences; Astronomy and Astrophysics; 542; 6-2012; 1-16; A31
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/69125
identifier_str_mv Hubrig, S.; Castelli, F.; Gonzalez, Jorge Federico; Elkin, V. G.; Mathys, G.; et al.; Line identification in high-resolution, near-infrared CRIRES spectra of chemically peculiar and Herbig Ae stars; EDP Sciences; Astronomy and Astrophysics; 542; 6-2012; 1-16; A31
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201218968
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2012/06/aa18968-12/aa18968-12.html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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