Observational Δν-ρ¯ Relation for δ Sct Stars using Eclipsing Binaries and Space Photometry

Delta Scuti (δ Sct) stars are intermediate-mass pulsators, whose intrinsic oscillations have been studied for decades. However, modeling their pulsations remains a real theoretical challenge, thereby even hampering the precise determination of global stellar parameters. In this work, we used space p...

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Autores: García Hernández, A., Martín-Ruiz, Susana, Monteiro, Mário J. P. F. G., Suárez, Juan Carlos, Reese, D. R., Pascual Granado, J., Garrido, Rafael
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/398066
Acceso en línea:http://hdl.handle.net/10261/398066
Access Level:acceso abierto
Palabra clave:Binaries: eclipsing
Stars: oscillations (including pulsations)
Stars: rotation
Stars: variables: delta Scuti
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spelling Observational Δν-ρ¯ Relation for δ Sct Stars using Eclipsing Binaries and Space PhotometryGarcía Hernández, A.Martín-Ruiz, SusanaMonteiro, Mário J. P. F. G.Suárez, Juan CarlosReese, D. R.Pascual Granado, J.Garrido, RafaelBinaries: eclipsingStars: oscillations (including pulsations)Stars: rotationStars: variables: delta ScutiDelta Scuti (δ Sct) stars are intermediate-mass pulsators, whose intrinsic oscillations have been studied for decades. However, modeling their pulsations remains a real theoretical challenge, thereby even hampering the precise determination of global stellar parameters. In this work, we used space photometry observations of eclipsing binaries with a δ Sct component to obtain reliable physical parameters and oscillation frequencies. Using that information, we derived an observational scaling relation between the stellar mean density and a frequency pattern in the oscillation spectrum. This pattern is analogous to the solar-like large separation but in the low order regime. We also show that this relation is independent of the rotation rate. These findings open the possibility of accurately characterizing this type of pulsator and validate the frequency pattern as a new observable for δ Sct stars. © 2015. The American Astronomical Society. All rights reserved.A.G.H. acknowledges support from Fundação para a Ciência e a Tecnologia (FCT, Portugal) through the fellowship SFRH/BPD/80619/2011. A.G.H. and J.C.S. acknowledges support from the EC Project SPACEINN (FP7-SPACE-2012-312844). J.C.S. also acknowledges funding support from the Spanish “Ministerio de Economía y Competitividad” under “Ramón y Cajal” subprogram. D.R.R. is currently funded by the European Community's Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 312844 (SPACEINN), which is gratefully acknowledged. This research made use of the SIMBAD database and the VizieR catalog access tool operated at CDS, Strasbourg, France, and the SAO/NASA Astrophysics Data System.Peer reviewedIOP PublishingFundação para a Ciência e a Tecnologia (Portugal)European CommissionMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252015info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/398066reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/FP7/312844info:eu-repo/grantAgreement/EC/FP7/312844http://dx.doi.org/10.1088/2041-8205/811/2/L29Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3980662026-05-22T06:33:51Z
dc.title.none.fl_str_mv Observational Δν-ρ¯ Relation for δ Sct Stars using Eclipsing Binaries and Space Photometry
title Observational Δν-ρ¯ Relation for δ Sct Stars using Eclipsing Binaries and Space Photometry
spellingShingle Observational Δν-ρ¯ Relation for δ Sct Stars using Eclipsing Binaries and Space Photometry
García Hernández, A.
Binaries: eclipsing
Stars: oscillations (including pulsations)
Stars: rotation
Stars: variables: delta Scuti
title_short Observational Δν-ρ¯ Relation for δ Sct Stars using Eclipsing Binaries and Space Photometry
title_full Observational Δν-ρ¯ Relation for δ Sct Stars using Eclipsing Binaries and Space Photometry
title_fullStr Observational Δν-ρ¯ Relation for δ Sct Stars using Eclipsing Binaries and Space Photometry
title_full_unstemmed Observational Δν-ρ¯ Relation for δ Sct Stars using Eclipsing Binaries and Space Photometry
title_sort Observational Δν-ρ¯ Relation for δ Sct Stars using Eclipsing Binaries and Space Photometry
dc.creator.none.fl_str_mv García Hernández, A.
Martín-Ruiz, Susana
Monteiro, Mário J. P. F. G.
Suárez, Juan Carlos
Reese, D. R.
Pascual Granado, J.
Garrido, Rafael
author García Hernández, A.
author_facet García Hernández, A.
Martín-Ruiz, Susana
Monteiro, Mário J. P. F. G.
Suárez, Juan Carlos
Reese, D. R.
Pascual Granado, J.
Garrido, Rafael
author_role author
author2 Martín-Ruiz, Susana
Monteiro, Mário J. P. F. G.
Suárez, Juan Carlos
Reese, D. R.
Pascual Granado, J.
Garrido, Rafael
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Fundação para a Ciência e a Tecnologia (Portugal)
European Commission
Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Binaries: eclipsing
Stars: oscillations (including pulsations)
Stars: rotation
Stars: variables: delta Scuti
topic Binaries: eclipsing
Stars: oscillations (including pulsations)
Stars: rotation
Stars: variables: delta Scuti
description Delta Scuti (δ Sct) stars are intermediate-mass pulsators, whose intrinsic oscillations have been studied for decades. However, modeling their pulsations remains a real theoretical challenge, thereby even hampering the precise determination of global stellar parameters. In this work, we used space photometry observations of eclipsing binaries with a δ Sct component to obtain reliable physical parameters and oscillation frequencies. Using that information, we derived an observational scaling relation between the stellar mean density and a frequency pattern in the oscillation spectrum. This pattern is analogous to the solar-like large separation but in the low order regime. We also show that this relation is independent of the rotation rate. These findings open the possibility of accurately characterizing this type of pulsator and validate the frequency pattern as a new observable for δ Sct stars. © 2015. The American Astronomical Society. All rights reserved.
publishDate 2015
dc.date.none.fl_str_mv 2015
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/398066
url http://hdl.handle.net/10261/398066
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/FP7/312844
info:eu-repo/grantAgreement/EC/FP7/312844
http://dx.doi.org/10.1088/2041-8205/811/2/L29
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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