Towards an improvement in the spectral description of central stars of planetary nebulae

Autores
Weidmann, Walter Alfredo; Gamen, Roberto Claudio; Mast, Damian; Fariña, C.; Gimeno, G.; Schmidt, Eduardo Osvaldo; Ashley, R. P.; Peralta de Arriba, L.; Sowicka, P.; Ordonez Etxeberria, I.
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Context. There are more than 3000 known Galactic planetary nebulae, but only 492 central stars of Galactic planetary nebulae (CSPN) have known spectral types. It is vital to increase this number in order to have reliable statistics, which will lead to an increase of our understanding of these amazing objects. Aims. We aim to contribute to the knowledge of central stars of planetary nebulae and stellar evolution. Methods. This observational study is based on Gemini Multi-Object Spectrographs (GMOS) and with the Intermediate Dispersion Spectrograph (IDS) at the Isaac Newton Telescope spectra of 78 CSPN. The objects were selected because they did not have any previous classification, or the present classification is ambiguous. These new high quality spectra allowed us to identify the key stellar lines for determining spectral classification in the Morgan-Keenan (MK) system. Results. We have acquired optical spectra of a large sample of CSPN. From the observed targets, 50 are classified here for the first time while for 28 the existing classifications have been improved. In seven objects we have identified a P-Cygni profile at the He I lines. Six of these CSPN are late O-Type. The vast majority of the stars in the sample exhibit an absorption-Type spectrum, and in one case we have found wide emission lines typical of [WR] stars. We give a complementary, and preliminary, classification criterion to obtain the sub-Type of the O(H)-Type CSPN. Finally, we give a more realistic value of the proportion of CSPN that are rich or poor in hydrogen.
Fil: Weidmann, Walter Alfredo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gamen, Roberto Claudio. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Mast, Damian. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fariña, C.. Instituto de Astrofísica de Canarias; España
Fil: Gimeno, G.. Gemini South; Chile
Fil: Schmidt, Eduardo Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Ashley, R. P.. University of Warwick; Reino Unido
Fil: Peralta de Arriba, L.. University of Cambridge; Estados Unidos
Fil: Sowicka, P.. Nicolaus Copernicus Astronomical Center; Polonia
Fil: Ordonez Etxeberria, I.. Euskal Herriko Unibertsitatea; España
Materia
PLANETARY NEBULAE: GENERAL
STARS: EARLY-TYPE
STARS: POPULATION II
SURVEYS
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:11336/82884
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/82884
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Towards an improvement in the spectral description of central stars of planetary nebulaeWeidmann, Walter AlfredoGamen, Roberto ClaudioMast, DamianFariña, C.Gimeno, G.Schmidt, Eduardo OsvaldoAshley, R. P.Peralta de Arriba, L.Sowicka, P.Ordonez Etxeberria, I.PLANETARY NEBULAE: GENERALSTARS: EARLY-TYPESTARS: POPULATION IISURVEYShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context. There are more than 3000 known Galactic planetary nebulae, but only 492 central stars of Galactic planetary nebulae (CSPN) have known spectral types. It is vital to increase this number in order to have reliable statistics, which will lead to an increase of our understanding of these amazing objects. Aims. We aim to contribute to the knowledge of central stars of planetary nebulae and stellar evolution. Methods. This observational study is based on Gemini Multi-Object Spectrographs (GMOS) and with the Intermediate Dispersion Spectrograph (IDS) at the Isaac Newton Telescope spectra of 78 CSPN. The objects were selected because they did not have any previous classification, or the present classification is ambiguous. These new high quality spectra allowed us to identify the key stellar lines for determining spectral classification in the Morgan-Keenan (MK) system. Results. We have acquired optical spectra of a large sample of CSPN. From the observed targets, 50 are classified here for the first time while for 28 the existing classifications have been improved. In seven objects we have identified a P-Cygni profile at the He I lines. Six of these CSPN are late O-Type. The vast majority of the stars in the sample exhibit an absorption-Type spectrum, and in one case we have found wide emission lines typical of [WR] stars. We give a complementary, and preliminary, classification criterion to obtain the sub-Type of the O(H)-Type CSPN. Finally, we give a more realistic value of the proportion of CSPN that are rich or poor in hydrogen.Fil: Weidmann, Walter Alfredo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gamen, Roberto Claudio. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Mast, Damian. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Fariña, C.. Instituto de Astrofísica de Canarias; EspañaFil: Gimeno, G.. Gemini South; ChileFil: Schmidt, Eduardo Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Ashley, R. P.. University of Warwick; Reino UnidoFil: Peralta de Arriba, L.. University of Cambridge; Estados UnidosFil: Sowicka, P.. Nicolaus Copernicus Astronomical Center; PoloniaFil: Ordonez Etxeberria, I.. Euskal Herriko Unibertsitatea; EspañaEDP Sciences2018-02info: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/11336/82884Weidmann, Walter Alfredo; Gamen, Roberto Claudio; Mast, Damian; Fariña, C.; Gimeno, G.; et al.; Towards an improvement in the spectral description of central stars of planetary nebulae; EDP Sciences; Astronomy and Astrophysics; 614; 2-2018; 135-1710004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201731805info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/10.1051/0004-6361/201731805info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:21:02Zoai:ri.conicet.gov.ar:11336/82884instacron: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:34982025-09-29 10:21:03.126CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Towards an improvement in the spectral description of central stars of planetary nebulae
title Towards an improvement in the spectral description of central stars of planetary nebulae
spellingShingle Towards an improvement in the spectral description of central stars of planetary nebulae
Weidmann, Walter Alfredo
PLANETARY NEBULAE: GENERAL
STARS: EARLY-TYPE
STARS: POPULATION II
SURVEYS
title_short Towards an improvement in the spectral description of central stars of planetary nebulae
title_full Towards an improvement in the spectral description of central stars of planetary nebulae
title_fullStr Towards an improvement in the spectral description of central stars of planetary nebulae
title_full_unstemmed Towards an improvement in the spectral description of central stars of planetary nebulae
title_sort Towards an improvement in the spectral description of central stars of planetary nebulae
dc.creator.none.fl_str_mv Weidmann, Walter Alfredo
Gamen, Roberto Claudio
Mast, Damian
Fariña, C.
Gimeno, G.
Schmidt, Eduardo Osvaldo
Ashley, R. P.
Peralta de Arriba, L.
Sowicka, P.
Ordonez Etxeberria, I.
author Weidmann, Walter Alfredo
author_facet Weidmann, Walter Alfredo
Gamen, Roberto Claudio
Mast, Damian
Fariña, C.
Gimeno, G.
Schmidt, Eduardo Osvaldo
Ashley, R. P.
Peralta de Arriba, L.
Sowicka, P.
Ordonez Etxeberria, I.
author_role author
author2 Gamen, Roberto Claudio
Mast, Damian
Fariña, C.
Gimeno, G.
Schmidt, Eduardo Osvaldo
Ashley, R. P.
Peralta de Arriba, L.
Sowicka, P.
Ordonez Etxeberria, I.
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv PLANETARY NEBULAE: GENERAL
STARS: EARLY-TYPE
STARS: POPULATION II
SURVEYS
topic PLANETARY NEBULAE: GENERAL
STARS: EARLY-TYPE
STARS: POPULATION II
SURVEYS
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. There are more than 3000 known Galactic planetary nebulae, but only 492 central stars of Galactic planetary nebulae (CSPN) have known spectral types. It is vital to increase this number in order to have reliable statistics, which will lead to an increase of our understanding of these amazing objects. Aims. We aim to contribute to the knowledge of central stars of planetary nebulae and stellar evolution. Methods. This observational study is based on Gemini Multi-Object Spectrographs (GMOS) and with the Intermediate Dispersion Spectrograph (IDS) at the Isaac Newton Telescope spectra of 78 CSPN. The objects were selected because they did not have any previous classification, or the present classification is ambiguous. These new high quality spectra allowed us to identify the key stellar lines for determining spectral classification in the Morgan-Keenan (MK) system. Results. We have acquired optical spectra of a large sample of CSPN. From the observed targets, 50 are classified here for the first time while for 28 the existing classifications have been improved. In seven objects we have identified a P-Cygni profile at the He I lines. Six of these CSPN are late O-Type. The vast majority of the stars in the sample exhibit an absorption-Type spectrum, and in one case we have found wide emission lines typical of [WR] stars. We give a complementary, and preliminary, classification criterion to obtain the sub-Type of the O(H)-Type CSPN. Finally, we give a more realistic value of the proportion of CSPN that are rich or poor in hydrogen.
Fil: Weidmann, Walter Alfredo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gamen, Roberto Claudio. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Mast, Damian. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fariña, C.. Instituto de Astrofísica de Canarias; España
Fil: Gimeno, G.. Gemini South; Chile
Fil: Schmidt, Eduardo Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Ashley, R. P.. University of Warwick; Reino Unido
Fil: Peralta de Arriba, L.. University of Cambridge; Estados Unidos
Fil: Sowicka, P.. Nicolaus Copernicus Astronomical Center; Polonia
Fil: Ordonez Etxeberria, I.. Euskal Herriko Unibertsitatea; España
description Context. There are more than 3000 known Galactic planetary nebulae, but only 492 central stars of Galactic planetary nebulae (CSPN) have known spectral types. It is vital to increase this number in order to have reliable statistics, which will lead to an increase of our understanding of these amazing objects. Aims. We aim to contribute to the knowledge of central stars of planetary nebulae and stellar evolution. Methods. This observational study is based on Gemini Multi-Object Spectrographs (GMOS) and with the Intermediate Dispersion Spectrograph (IDS) at the Isaac Newton Telescope spectra of 78 CSPN. The objects were selected because they did not have any previous classification, or the present classification is ambiguous. These new high quality spectra allowed us to identify the key stellar lines for determining spectral classification in the Morgan-Keenan (MK) system. Results. We have acquired optical spectra of a large sample of CSPN. From the observed targets, 50 are classified here for the first time while for 28 the existing classifications have been improved. In seven objects we have identified a P-Cygni profile at the He I lines. Six of these CSPN are late O-Type. The vast majority of the stars in the sample exhibit an absorption-Type spectrum, and in one case we have found wide emission lines typical of [WR] stars. We give a complementary, and preliminary, classification criterion to obtain the sub-Type of the O(H)-Type CSPN. Finally, we give a more realistic value of the proportion of CSPN that are rich or poor in hydrogen.
publishDate 2018
dc.date.none.fl_str_mv 2018-02
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/11336/82884
Weidmann, Walter Alfredo; Gamen, Roberto Claudio; Mast, Damian; Fariña, C.; Gimeno, G.; et al.; Towards an improvement in the spectral description of central stars of planetary nebulae; EDP Sciences; Astronomy and Astrophysics; 614; 2-2018; 135-171
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/82884
identifier_str_mv Weidmann, Walter Alfredo; Gamen, Roberto Claudio; Mast, Damian; Fariña, C.; Gimeno, G.; et al.; Towards an improvement in the spectral description of central stars of planetary nebulae; EDP Sciences; Astronomy and Astrophysics; 614; 2-2018; 135-171
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/10.1051/0004-6361/201731805
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/10.1051/0004-6361/201731805
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 13.070432

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