Spectral analysis of BD+30°623, the peculiar binary central star of the planetary nebula NGC 1514

NGC 1514 is a complex planetary nebula with a peculiar binary central star (BD+30°623) consisting of a cool star and a hot companion. To date, the parameters of the two stars have not been firmly established. We present a detailed spectral analysis of BD+30°623 based on intermediate-resolution Calar...

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Detalles Bibliográficos
Autores: Aller, A., Montesinos, B., Miranda, Luis F., Solano, E., Ulla, A.
Tipo de recurso: artículo
Estado:Versión publicada
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:10261/390491
Acceso en línea:http://hdl.handle.net/10261/390491
Access Level:acceso abierto
Palabra clave:Techniques: spectroscopic
Binaries: general
Stars: fundamental parameters
Subdwarfs
Planetary nebulae: individual: NGC 1514
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spelling Spectral analysis of BD+30°623, the peculiar binary central star of the planetary nebula NGC 1514Aller, A.Montesinos, B.Miranda, Luis F.Solano, E.Ulla, A.Techniques: spectroscopicBinaries: generalStars: fundamental parametersSubdwarfsPlanetary nebulae: individual: NGC 1514NGC 1514 is a complex planetary nebula with a peculiar binary central star (BD+30°623) consisting of a cool star and a hot companion. To date, the parameters of the two stars have not been firmly established. We present a detailed spectral analysis of BD+30°623 based on intermediate-resolution Calar Alto Faint Object Spectrograph optical spectra and International Ultraviolet Explorer spectra with the goal of deriving the parameters of the two stars. For this purpose, we used an extensive composite grid of Kurucz and Tübingen NLTE Model Atmosphere spectra. From the fitting procedure, in terms of the minimum x<sup>2</sup> method, the best models obtained correspond to an Horizontal-Branch A0 star with Teff = 9850 ± 150 K, log g = 3.50 ± 0.25, and a hot companion with Teff between 80 000 and 95 000K and a log g ≃ 5.5. To our knowledge, this is the first time that the parameters of both stars have been determined accurately through a detailed spectroscopic analysis. © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.We are very grateful to our anonymous referee for his/her comments that have improved the discussion of the paper. This work has been partially supported by grant AYA 2011-24052 (AA, ES), AYA2011-26202 (BM) and AYA 2011-30228-C3-01 (LFM) of the Spanish MINECO, and by grant INCITE09 312191PR (AA, LFM, AU) of Xunta de Galicia, all of them partially funded by FEDER funds, and by grant 12VI20 (AA, LFM, AU) of the University of Vigo. The authors thank Nicole Reindl for her helpful suggestions regarding the TMAP models, and Jesús Maíz-Apellaniz for discussions about the extinction. The TMAW service (http://astro-uni-tuebingen.de/ TMAW) used to calculate theoretical spectra for this paper was constructed as part of the activities of the GAVO. Authors also acknowledge the Calar Alto Observatory for the service observations. We acknowledge support from the Faculty of the European Space Astronomy Centre (ESAC). This research is based on INES data from the IUE satellite. The INES archive is supported by the Spanish Virtual Observatory through grant AYA2011-24052. We have also made use of the SIMBAD data base, operated at the CDS, Strasbourg (France), Aladin and NASAs Astrophysics Data System Bibliographic Services.Peer reviewedOxford University PressMinisterio de Economía y Competitividad (España)Xunta de GaliciaEuropean CommissionUniversidad de VigoConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2025202520152025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/390491reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MICINN//AYA2011-24052info:eu-repo/grantAgreement/MICINN//AYA2011-26202info:eu-repo/grantAgreement/MICINN//AYA 2011-30228-C03-01info:eu-repo/grantAgreement/MICINN//AYA2011-24052http://dx.doi.org/10.1093/mnras/stv196Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3904912026-05-22T06:33:51Z
dc.title.none.fl_str_mv Spectral analysis of BD+30°623, the peculiar binary central star of the planetary nebula NGC 1514
title Spectral analysis of BD+30°623, the peculiar binary central star of the planetary nebula NGC 1514
spellingShingle Spectral analysis of BD+30°623, the peculiar binary central star of the planetary nebula NGC 1514
Aller, A.
Techniques: spectroscopic
Binaries: general
Stars: fundamental parameters
Subdwarfs
Planetary nebulae: individual: NGC 1514
title_short Spectral analysis of BD+30°623, the peculiar binary central star of the planetary nebula NGC 1514
title_full Spectral analysis of BD+30°623, the peculiar binary central star of the planetary nebula NGC 1514
title_fullStr Spectral analysis of BD+30°623, the peculiar binary central star of the planetary nebula NGC 1514
title_full_unstemmed Spectral analysis of BD+30°623, the peculiar binary central star of the planetary nebula NGC 1514
title_sort Spectral analysis of BD+30°623, the peculiar binary central star of the planetary nebula NGC 1514
dc.creator.none.fl_str_mv Aller, A.
Montesinos, B.
Miranda, Luis F.
Solano, E.
Ulla, A.
author Aller, A.
author_facet Aller, A.
Montesinos, B.
Miranda, Luis F.
Solano, E.
Ulla, A.
author_role author
author2 Montesinos, B.
Miranda, Luis F.
Solano, E.
Ulla, A.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Xunta de Galicia
European Commission
Universidad de Vigo
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Techniques: spectroscopic
Binaries: general
Stars: fundamental parameters
Subdwarfs
Planetary nebulae: individual: NGC 1514
topic Techniques: spectroscopic
Binaries: general
Stars: fundamental parameters
Subdwarfs
Planetary nebulae: individual: NGC 1514
description NGC 1514 is a complex planetary nebula with a peculiar binary central star (BD+30°623) consisting of a cool star and a hot companion. To date, the parameters of the two stars have not been firmly established. We present a detailed spectral analysis of BD+30°623 based on intermediate-resolution Calar Alto Faint Object Spectrograph optical spectra and International Ultraviolet Explorer spectra with the goal of deriving the parameters of the two stars. For this purpose, we used an extensive composite grid of Kurucz and Tübingen NLTE Model Atmosphere spectra. From the fitting procedure, in terms of the minimum x<sup>2</sup> method, the best models obtained correspond to an Horizontal-Branch A0 star with Teff = 9850 ± 150 K, log g = 3.50 ± 0.25, and a hot companion with Teff between 80 000 and 95 000K and a log g ≃ 5.5. To our knowledge, this is the first time that the parameters of both stars have been determined accurately through a detailed spectroscopic analysis. © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.
publishDate 2015
dc.date.none.fl_str_mv 2015
2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/390491
url http://hdl.handle.net/10261/390491
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#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MICINN//AYA2011-24052
info:eu-repo/grantAgreement/MICINN//AYA2011-26202
info:eu-repo/grantAgreement/MICINN//AYA 2011-30228-C03-01
info:eu-repo/grantAgreement/MICINN//AYA2011-24052
http://dx.doi.org/10.1093/mnras/stv196
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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
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repository.mail.fl_str_mv
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