Star-spot distributions and chromospheric activity on the RS CVn type eclipsing binary SV Cam

Using a time series of high-resolution spectra and high-quality multicolour photometry, we reconstruct surface maps of the primary component of the RS CVn type rapidly rotating eclipsing binary, SV Cam (F9V + K4V). We measure a mass ratio, q, of 0.641(2) using our highest quality spectra and obtain...

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Autores: Şenavcı, H. V., Bahar, E., Montes Gutiérrez, David, Zola, S., Hussain, G. A. J., Frasca, A., Işık, E., Yörükoğlu, O.
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/12977
Acceso en línea:https://hdl.handle.net/20.500.14352/12977
Access Level:acceso abierto
Palabra clave:52
Space-telescope observations
Light-curve
H-alpha
Canum-venaticorum
Doppler images
Ursae-majoris
Short-period
Camelopardalis
Lifetimes
Emission
Astrofísica
Astronomía (Física)
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oai_identifier_str oai:docta.ucm.es:20.500.14352/12977
network_acronym_str ES
network_name_str España
repository_id_str
spelling Star-spot distributions and chromospheric activity on the RS CVn type eclipsing binary SV CamŞenavcı, H. V.Bahar, E.Montes Gutiérrez, DavidZola, S.Hussain, G. A. J.Frasca, A.Işık, E.Yörükoğlu, O.52Space-telescope observationsLight-curveH-alphaCanum-venaticorumDoppler imagesUrsae-majorisShort-periodCamelopardalisLifetimesEmissionAstrofísicaAstronomía (Física)Using a time series of high-resolution spectra and high-quality multicolour photometry, we reconstruct surface maps of the primary component of the RS CVn type rapidly rotating eclipsing binary, SV Cam (F9V + K4V). We measure a mass ratio, q, of 0.641(2) using our highest quality spectra and obtain surface brightness maps of the primary component, which exhibit predominantly high-latitude spots located between 60 and 70 latitudes with a mean filling factor of 35 per cent. This is also indicated by the R-hand light-curve inversion, subjected to rigorous numerical tests. The spectral subtraction of the H-alpha line reveals strong activity of the secondary component. The excess H-alpha absorption detected near the secondary minimum hints to the presence of cool material partially obscuring the primary star. The flux ratios of Call IRT excess emission indicate that the contribution of chromospheric plage regions associated with star-spots is dominant, even during the passage of the filament-like absorption feature.Oxford Univ PressUniversidad Complutense de Madrid20182018-09-0120182018-09-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/12977reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/129772026-06-02T12:44:21Z
dc.title.none.fl_str_mv Star-spot distributions and chromospheric activity on the RS CVn type eclipsing binary SV Cam
title Star-spot distributions and chromospheric activity on the RS CVn type eclipsing binary SV Cam
spellingShingle Star-spot distributions and chromospheric activity on the RS CVn type eclipsing binary SV Cam
Şenavcı, H. V.
52
Space-telescope observations
Light-curve
H-alpha
Canum-venaticorum
Doppler images
Ursae-majoris
Short-period
Camelopardalis
Lifetimes
Emission
Astrofísica
Astronomía (Física)
title_short Star-spot distributions and chromospheric activity on the RS CVn type eclipsing binary SV Cam
title_full Star-spot distributions and chromospheric activity on the RS CVn type eclipsing binary SV Cam
title_fullStr Star-spot distributions and chromospheric activity on the RS CVn type eclipsing binary SV Cam
title_full_unstemmed Star-spot distributions and chromospheric activity on the RS CVn type eclipsing binary SV Cam
title_sort Star-spot distributions and chromospheric activity on the RS CVn type eclipsing binary SV Cam
dc.creator.none.fl_str_mv Şenavcı, H. V.
Bahar, E.
Montes Gutiérrez, David
Zola, S.
Hussain, G. A. J.
Frasca, A.
Işık, E.
Yörükoğlu, O.
author Şenavcı, H. V.
author_facet Şenavcı, H. V.
Bahar, E.
Montes Gutiérrez, David
Zola, S.
Hussain, G. A. J.
Frasca, A.
Işık, E.
Yörükoğlu, O.
author_role author
author2 Bahar, E.
Montes Gutiérrez, David
Zola, S.
Hussain, G. A. J.
Frasca, A.
Işık, E.
Yörükoğlu, O.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 52
Space-telescope observations
Light-curve
H-alpha
Canum-venaticorum
Doppler images
Ursae-majoris
Short-period
Camelopardalis
Lifetimes
Emission
Astrofísica
Astronomía (Física)
topic 52
Space-telescope observations
Light-curve
H-alpha
Canum-venaticorum
Doppler images
Ursae-majoris
Short-period
Camelopardalis
Lifetimes
Emission
Astrofísica
Astronomía (Física)
description Using a time series of high-resolution spectra and high-quality multicolour photometry, we reconstruct surface maps of the primary component of the RS CVn type rapidly rotating eclipsing binary, SV Cam (F9V + K4V). We measure a mass ratio, q, of 0.641(2) using our highest quality spectra and obtain surface brightness maps of the primary component, which exhibit predominantly high-latitude spots located between 60 and 70 latitudes with a mean filling factor of 35 per cent. This is also indicated by the R-hand light-curve inversion, subjected to rigorous numerical tests. The spectral subtraction of the H-alpha line reveals strong activity of the secondary component. The excess H-alpha absorption detected near the secondary minimum hints to the presence of cool material partially obscuring the primary star. The flux ratios of Call IRT excess emission indicate that the contribution of chromospheric plage regions associated with star-spots is dominant, even during the passage of the filament-like absorption feature.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018-09-01
2018
2018-09-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/12977
url https://hdl.handle.net/20.500.14352/12977
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Oxford Univ Press
publisher.none.fl_str_mv Oxford Univ Press
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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