Long-term chromospheric activity of non-eclipsing RS CVn-type stars chromospheric activity of non-eclipsing RS CVn-type stars

Autores
Buccino, Andrea Paola; Mauas, Pablo Jacobo David
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Context: The IUE database provides a large number of UV high and low-resolution spectra   of RS CVn-type stars from 1978 to 1996. In particular, many of these stars were monitored  continuously during several seasons by IUE. Aims: Our main purpose is to study the short  and long-term chromospheric acti- vity of the RS CVn systems most observed by IUE: HD  22468 (V711 Tau, HR 1099, K1IV+G5V), HD 21242 (UX Ari, K0IV+G5V) and HD  224085 (II Peg, K2IV). Methods: We  first obtain the Mount Wilson index S from the IUE  high and low- resolution spectra. Secondly, we analyse with the Lomb-Scargle periodogram  the mean annual index S and the amplitude of the rotational modulation of the index S. Results: For HD 22468 (V711 Tau, HR 1099), we found a possible chromospheric cycle  with a period of  18 years and a shorter cycle with a period of  3 years, which could be associated to a chromospheric "flip- flop" cycle. The data of HD 224085 (II Peg) also suggest a chromospheric cycle of  21 years and a  flip- flop cycle of  9 years. Finally, we obtained a possible chromospheric cycle of  7 years for HD 21242 (UX Ari).
Fil: Buccino, Andrea Paola. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Mauas, Pablo Jacobo David. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Materia
Astrophysics
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:11336/21513
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Long-term chromospheric activity of non-eclipsing RS CVn-type stars chromospheric activity of non-eclipsing RS CVn-type starsBuccino, Andrea PaolaMauas, Pablo Jacobo DavidAstrophysicshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context: The IUE database provides a large number of UV high and low-resolution spectra   of RS CVn-type stars from 1978 to 1996. In particular, many of these stars were monitored  continuously during several seasons by IUE. Aims: Our main purpose is to study the short  and long-term chromospheric acti- vity of the RS CVn systems most observed by IUE: HD  22468 (V711 Tau, HR 1099, K1IV+G5V), HD 21242 (UX Ari, K0IV+G5V) and HD  224085 (II Peg, K2IV). Methods: We  first obtain the Mount Wilson index S from the IUE  high and low- resolution spectra. Secondly, we analyse with the Lomb-Scargle periodogram  the mean annual index S and the amplitude of the rotational modulation of the index S. Results: For HD 22468 (V711 Tau, HR 1099), we found a possible chromospheric cycle  with a period of  18 years and a shorter cycle with a period of  3 years, which could be associated to a chromospheric "flip- flop" cycle. The data of HD 224085 (II Peg) also suggest a chromospheric cycle of  21 years and a  flip- flop cycle of  9 years. Finally, we obtained a possible chromospheric cycle of  7 years for HD 21242 (UX Ari).Fil: Buccino, Andrea Paola. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Mauas, Pablo Jacobo David. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaEDP Sciences2009-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21513Buccino, Andrea Paola; Mauas, Pablo Jacobo David; Long-term chromospheric activity of non-eclipsing RS CVn-type stars chromospheric activity of non-eclipsing RS CVn-type stars; EDP Sciences; Astronomy and Astrophysics; 495; 1; 12-2009; 287-2950004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/0812.3827info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2009/07/aa10985-08/aa10985-08.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:200810985info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:45:09Zoai:ri.conicet.gov.ar:11336/21513instacron: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:34982025-10-22 11:45:10.529CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Long-term chromospheric activity of non-eclipsing RS CVn-type stars chromospheric activity of non-eclipsing RS CVn-type stars
title Long-term chromospheric activity of non-eclipsing RS CVn-type stars chromospheric activity of non-eclipsing RS CVn-type stars
spellingShingle Long-term chromospheric activity of non-eclipsing RS CVn-type stars chromospheric activity of non-eclipsing RS CVn-type stars
Buccino, Andrea Paola
Astrophysics
title_short Long-term chromospheric activity of non-eclipsing RS CVn-type stars chromospheric activity of non-eclipsing RS CVn-type stars
title_full Long-term chromospheric activity of non-eclipsing RS CVn-type stars chromospheric activity of non-eclipsing RS CVn-type stars
title_fullStr Long-term chromospheric activity of non-eclipsing RS CVn-type stars chromospheric activity of non-eclipsing RS CVn-type stars
title_full_unstemmed Long-term chromospheric activity of non-eclipsing RS CVn-type stars chromospheric activity of non-eclipsing RS CVn-type stars
title_sort Long-term chromospheric activity of non-eclipsing RS CVn-type stars chromospheric activity of non-eclipsing RS CVn-type stars
dc.creator.none.fl_str_mv Buccino, Andrea Paola
Mauas, Pablo Jacobo David
author Buccino, Andrea Paola
author_facet Buccino, Andrea Paola
Mauas, Pablo Jacobo David
author_role author
author2 Mauas, Pablo Jacobo David
author2_role author
dc.subject.none.fl_str_mv Astrophysics
topic Astrophysics
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: The IUE database provides a large number of UV high and low-resolution spectra   of RS CVn-type stars from 1978 to 1996. In particular, many of these stars were monitored  continuously during several seasons by IUE. Aims: Our main purpose is to study the short  and long-term chromospheric acti- vity of the RS CVn systems most observed by IUE: HD  22468 (V711 Tau, HR 1099, K1IV+G5V), HD 21242 (UX Ari, K0IV+G5V) and HD  224085 (II Peg, K2IV). Methods: We  first obtain the Mount Wilson index S from the IUE  high and low- resolution spectra. Secondly, we analyse with the Lomb-Scargle periodogram  the mean annual index S and the amplitude of the rotational modulation of the index S. Results: For HD 22468 (V711 Tau, HR 1099), we found a possible chromospheric cycle  with a period of  18 years and a shorter cycle with a period of  3 years, which could be associated to a chromospheric "flip- flop" cycle. The data of HD 224085 (II Peg) also suggest a chromospheric cycle of  21 years and a  flip- flop cycle of  9 years. Finally, we obtained a possible chromospheric cycle of  7 years for HD 21242 (UX Ari).
Fil: Buccino, Andrea Paola. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Mauas, Pablo Jacobo David. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
description Context: The IUE database provides a large number of UV high and low-resolution spectra   of RS CVn-type stars from 1978 to 1996. In particular, many of these stars were monitored  continuously during several seasons by IUE. Aims: Our main purpose is to study the short  and long-term chromospheric acti- vity of the RS CVn systems most observed by IUE: HD  22468 (V711 Tau, HR 1099, K1IV+G5V), HD 21242 (UX Ari, K0IV+G5V) and HD  224085 (II Peg, K2IV). Methods: We  first obtain the Mount Wilson index S from the IUE  high and low- resolution spectra. Secondly, we analyse with the Lomb-Scargle periodogram  the mean annual index S and the amplitude of the rotational modulation of the index S. Results: For HD 22468 (V711 Tau, HR 1099), we found a possible chromospheric cycle  with a period of  18 years and a shorter cycle with a period of  3 years, which could be associated to a chromospheric "flip- flop" cycle. The data of HD 224085 (II Peg) also suggest a chromospheric cycle of  21 years and a  flip- flop cycle of  9 years. Finally, we obtained a possible chromospheric cycle of  7 years for HD 21242 (UX Ari).
publishDate 2009
dc.date.none.fl_str_mv 2009-12
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/11336/21513
Buccino, Andrea Paola; Mauas, Pablo Jacobo David; Long-term chromospheric activity of non-eclipsing RS CVn-type stars chromospheric activity of non-eclipsing RS CVn-type stars; EDP Sciences; Astronomy and Astrophysics; 495; 1; 12-2009; 287-295
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21513
identifier_str_mv Buccino, Andrea Paola; Mauas, Pablo Jacobo David; Long-term chromospheric activity of non-eclipsing RS CVn-type stars chromospheric activity of non-eclipsing RS CVn-type stars; EDP Sciences; Astronomy and Astrophysics; 495; 1; 12-2009; 287-295
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/url/https://arxiv.org/abs/0812.3827
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2009/07/aa10985-08/aa10985-08.html
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:200810985
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
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 12.982451

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