Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753
- Autores
- Briquet, M.; Korhonen, H.; Gonzalez, Jorge Federico; Hubrig, S.; Hackman, T.
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Aims: We gathered about 100 high-resolution spectra of three typical HgMn (mercury-manganese) stars, HD11753, HD53244, and HD221507, to search for slowly pulsating B-like pulsations and surface inhomogeneous distribution of various chemical elements. Methods: Classical frequency analysis methods were used to detect line profile variability and to determine the variation period. Doppler imaging reconstruction was performed to obtain abundance maps of chemical elements on the stellar surface. Results: For HD11753, which is the star with the most pronounced variability, distinct spectral line profile changes were detected for Ti, Sr, Y, Zr, and Hg, whereas for HD53244 and HD221507 the most variable line profiles belong to the elements Hg and Y, respectively. We derived rotation periods for all three stars from the variations of radial velocities and equivalent widths of spectral lines belonging to inhomogeneously distributed elements: Prot (HD11753) = 9.54 d, Prot (HD53244) = 6.16 d, and Prot (HD221507) = 1.93 d. For HD11753 the Doppler imaging technique was applied to derive the distribution of the most variable elements Ti, Sr, and Y using two datasets separated by ∼65 days. Results of Doppler imaging reconstruction revealed noticeable changes in the surface distributions of Ti II, Sr II, and Y II between the datasets, indicating the hitherto not well understood physical processes in stars with radiative envelopes that cause a rather fast dynamical chemical spot evolution.
Fil: Briquet, M.. Katholikie Universiteit Leuven; Bélgica
Fil: Korhonen, H.. European Southern Observatory; Alemania
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: Hubrig, S.. Astrophysikalisches Institut Potsdam; Alemania
Fil: Hackman, T.. University of Helsinski; Finlandia - Materia
-
STARS: CHEMICALLY PECULIAR
STARS: INDIVIDUAL: HD11753
STARS: INDIVIDUAL: HD221507
STARS: INDIVIDUAL: HD53244
STARS: VARIABLES: GENERAL - 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:11336/69161
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oai:ri.conicet.gov.ar:11336/69161 |
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spelling |
Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753Briquet, M.Korhonen, H.Gonzalez, Jorge FedericoHubrig, S.Hackman, T.STARS: CHEMICALLY PECULIARSTARS: INDIVIDUAL: HD11753STARS: INDIVIDUAL: HD221507STARS: INDIVIDUAL: HD53244STARS: VARIABLES: GENERALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Aims: We gathered about 100 high-resolution spectra of three typical HgMn (mercury-manganese) stars, HD11753, HD53244, and HD221507, to search for slowly pulsating B-like pulsations and surface inhomogeneous distribution of various chemical elements. Methods: Classical frequency analysis methods were used to detect line profile variability and to determine the variation period. Doppler imaging reconstruction was performed to obtain abundance maps of chemical elements on the stellar surface. Results: For HD11753, which is the star with the most pronounced variability, distinct spectral line profile changes were detected for Ti, Sr, Y, Zr, and Hg, whereas for HD53244 and HD221507 the most variable line profiles belong to the elements Hg and Y, respectively. We derived rotation periods for all three stars from the variations of radial velocities and equivalent widths of spectral lines belonging to inhomogeneously distributed elements: Prot (HD11753) = 9.54 d, Prot (HD53244) = 6.16 d, and Prot (HD221507) = 1.93 d. For HD11753 the Doppler imaging technique was applied to derive the distribution of the most variable elements Ti, Sr, and Y using two datasets separated by ∼65 days. Results of Doppler imaging reconstruction revealed noticeable changes in the surface distributions of Ti II, Sr II, and Y II between the datasets, indicating the hitherto not well understood physical processes in stars with radiative envelopes that cause a rather fast dynamical chemical spot evolution.Fil: Briquet, M.. Katholikie Universiteit Leuven; BélgicaFil: Korhonen, H.. European Southern Observatory; AlemaniaFil: 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: Hubrig, S.. Astrophysikalisches Institut Potsdam; AlemaniaFil: Hackman, T.. University of Helsinski; FinlandiaEDP Sciences2010-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/69161Briquet, M.; Korhonen, H.; Gonzalez, Jorge Federico; Hubrig, S.; Hackman, T.; Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753; EDP Sciences; Astronomy and Astrophysics; 511; 2-2010; 1-6; A710004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/200913775info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2010/03/aa13775-09/aa13775-09.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 Técnicas2025-09-29T10:10:21Zoai:ri.conicet.gov.ar:11336/69161instacron: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 10:10:21.929CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753 |
title |
Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753 |
spellingShingle |
Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753 Briquet, M. STARS: CHEMICALLY PECULIAR STARS: INDIVIDUAL: HD11753 STARS: INDIVIDUAL: HD221507 STARS: INDIVIDUAL: HD53244 STARS: VARIABLES: GENERAL |
title_short |
Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753 |
title_full |
Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753 |
title_fullStr |
Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753 |
title_full_unstemmed |
Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753 |
title_sort |
Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753 |
dc.creator.none.fl_str_mv |
Briquet, M. Korhonen, H. Gonzalez, Jorge Federico Hubrig, S. Hackman, T. |
author |
Briquet, M. |
author_facet |
Briquet, M. Korhonen, H. Gonzalez, Jorge Federico Hubrig, S. Hackman, T. |
author_role |
author |
author2 |
Korhonen, H. Gonzalez, Jorge Federico Hubrig, S. Hackman, T. |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
STARS: CHEMICALLY PECULIAR STARS: INDIVIDUAL: HD11753 STARS: INDIVIDUAL: HD221507 STARS: INDIVIDUAL: HD53244 STARS: VARIABLES: GENERAL |
topic |
STARS: CHEMICALLY PECULIAR STARS: INDIVIDUAL: HD11753 STARS: INDIVIDUAL: HD221507 STARS: INDIVIDUAL: HD53244 STARS: VARIABLES: GENERAL |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Aims: We gathered about 100 high-resolution spectra of three typical HgMn (mercury-manganese) stars, HD11753, HD53244, and HD221507, to search for slowly pulsating B-like pulsations and surface inhomogeneous distribution of various chemical elements. Methods: Classical frequency analysis methods were used to detect line profile variability and to determine the variation period. Doppler imaging reconstruction was performed to obtain abundance maps of chemical elements on the stellar surface. Results: For HD11753, which is the star with the most pronounced variability, distinct spectral line profile changes were detected for Ti, Sr, Y, Zr, and Hg, whereas for HD53244 and HD221507 the most variable line profiles belong to the elements Hg and Y, respectively. We derived rotation periods for all three stars from the variations of radial velocities and equivalent widths of spectral lines belonging to inhomogeneously distributed elements: Prot (HD11753) = 9.54 d, Prot (HD53244) = 6.16 d, and Prot (HD221507) = 1.93 d. For HD11753 the Doppler imaging technique was applied to derive the distribution of the most variable elements Ti, Sr, and Y using two datasets separated by ∼65 days. Results of Doppler imaging reconstruction revealed noticeable changes in the surface distributions of Ti II, Sr II, and Y II between the datasets, indicating the hitherto not well understood physical processes in stars with radiative envelopes that cause a rather fast dynamical chemical spot evolution. Fil: Briquet, M.. Katholikie Universiteit Leuven; Bélgica Fil: Korhonen, H.. European Southern Observatory; Alemania 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: Hubrig, S.. Astrophysikalisches Institut Potsdam; Alemania Fil: Hackman, T.. University of Helsinski; Finlandia |
description |
Aims: We gathered about 100 high-resolution spectra of three typical HgMn (mercury-manganese) stars, HD11753, HD53244, and HD221507, to search for slowly pulsating B-like pulsations and surface inhomogeneous distribution of various chemical elements. Methods: Classical frequency analysis methods were used to detect line profile variability and to determine the variation period. Doppler imaging reconstruction was performed to obtain abundance maps of chemical elements on the stellar surface. Results: For HD11753, which is the star with the most pronounced variability, distinct spectral line profile changes were detected for Ti, Sr, Y, Zr, and Hg, whereas for HD53244 and HD221507 the most variable line profiles belong to the elements Hg and Y, respectively. We derived rotation periods for all three stars from the variations of radial velocities and equivalent widths of spectral lines belonging to inhomogeneously distributed elements: Prot (HD11753) = 9.54 d, Prot (HD53244) = 6.16 d, and Prot (HD221507) = 1.93 d. For HD11753 the Doppler imaging technique was applied to derive the distribution of the most variable elements Ti, Sr, and Y using two datasets separated by ∼65 days. Results of Doppler imaging reconstruction revealed noticeable changes in the surface distributions of Ti II, Sr II, and Y II between the datasets, indicating the hitherto not well understood physical processes in stars with radiative envelopes that cause a rather fast dynamical chemical spot evolution. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-02 |
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/11336/69161 Briquet, M.; Korhonen, H.; Gonzalez, Jorge Federico; Hubrig, S.; Hackman, T.; Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753; EDP Sciences; Astronomy and Astrophysics; 511; 2-2010; 1-6; A71 0004-6361 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/69161 |
identifier_str_mv |
Briquet, M.; Korhonen, H.; Gonzalez, Jorge Federico; Hubrig, S.; Hackman, T.; Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753; EDP Sciences; Astronomy and Astrophysics; 511; 2-2010; 1-6; A71 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/10.1051/0004-6361/200913775 info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2010/03/aa13775-09/aa13775-09.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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1844613992408940544 |
score |
13.070432 |