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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/69161
Acceder
id CONICETDig_39e560c25c920ca41ffee7cfd79dfc2d
oai_identifier_str oai:ri.conicet.gov.ar:11336/69161
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
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 Técnicas2025-10-15T15:07:34Zoai: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:34982025-10-15 15:07:34.623CONICET 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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score 13.22299

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