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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/69125
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oai:ri.conicet.gov.ar:11336/69125 |
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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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1844614514519048192 |
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13.070432 |