Dynamical evolution of titanium, strontium, and yttrium spots on the surface of the HgMn star HD11753

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 wer...

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Autores: Briquet, M., Korhonen, H., Gonzalez, Jorge Federico, Hubrig, S., Hackman, T.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2010
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/69161
Acesso em linha:http://hdl.handle.net/11336/69161
Access Level:acceso abierto
Palavra-chave:STARS: CHEMICALLY PECULIAR
STARS: INDIVIDUAL: HD11753
STARS: INDIVIDUAL: HD221507
STARS: INDIVIDUAL: HD53244
STARS: VARIABLES: GENERAL
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
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oai_identifier_str oai:ri.conicet.gov.ar:11336/69161
network_acronym_str AR
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repository_id_str
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 Técnicas2024-05-08T14:01:25Zoai: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:34982024-05-08 14:01:25.392CONICET 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
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
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
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
topic STARS: CHEMICALLY PECULIAR
STARS: INDIVIDUAL: HD11753
STARS: INDIVIDUAL: HD221507
STARS: INDIVIDUAL: HD53244
STARS: VARIABLES: GENERAL
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
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
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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 15,812429

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