Hunting young white dwarfs at the Center of Planetary Nebulae

Autores
Ahumada, Javier Alejandro; Weidmann, Walter Alfredo; Miller Bertolami, Marcelo Miguel; Saker, Leila Yamila
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present Gemini-South observations of nine faint and extended planetary nebulae (PNe). Using direct images taken with the spectrograph Gemini-South multi-object spectrograph (GMOS), we built the (u¢-g¢) versus (g¢-r¢) diagrams of the stars in the observed areas which allowed us to consider their geometrical positions and identify the probable central stars of the nebulae. Our stellar spectra of seven stars, also taken with GMOS, indicate that four (and probably two more) objects are white dwarfs of the DAO subtype. Moreover, the white dwarf status of the four stars is confirmed by the parameters Teff and log g derived with the help of theoretical stellar spectra. Given this evidence, we propose that these hot stars are the central ionizing sources of the nebulae. With this work we hope to help improve the current scarce statistics on central white dwarfs in PNe.
Fil: Ahumada, Javier Alejandro. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Weidmann, Walter Alfredo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Miller Bertolami, Marcelo Miguel. 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: Saker, Leila Yamila. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Materia
PLANETARY NEBULAE NUCLEI
PLANETARY NEBULAE
WHITE DWARF STARS
SUBDWARF STARS
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:11336/128036
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Hunting young white dwarfs at the Center of Planetary NebulaeAhumada, Javier AlejandroWeidmann, Walter AlfredoMiller Bertolami, Marcelo MiguelSaker, Leila YamilaPLANETARY NEBULAE NUCLEIPLANETARY NEBULAEWHITE DWARF STARSSUBDWARF STARShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present Gemini-South observations of nine faint and extended planetary nebulae (PNe). Using direct images taken with the spectrograph Gemini-South multi-object spectrograph (GMOS), we built the (u¢-g¢) versus (g¢-r¢) diagrams of the stars in the observed areas which allowed us to consider their geometrical positions and identify the probable central stars of the nebulae. Our stellar spectra of seven stars, also taken with GMOS, indicate that four (and probably two more) objects are white dwarfs of the DAO subtype. Moreover, the white dwarf status of the four stars is confirmed by the parameters Teff and log g derived with the help of theoretical stellar spectra. Given this evidence, we propose that these hot stars are the central ionizing sources of the nebulae. With this work we hope to help improve the current scarce statistics on central white dwarfs in PNe.Fil: Ahumada, Javier Alejandro. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Weidmann, Walter Alfredo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Miller Bertolami, Marcelo Miguel. 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: Saker, Leila Yamila. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaIOP Publishing2019-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/128036Ahumada, Javier Alejandro; Weidmann, Walter Alfredo; Miller Bertolami, Marcelo Miguel; Saker, Leila Yamila; Hunting young white dwarfs at the Center of Planetary Nebulae; IOP Publishing; Astrophysical Journal; 882; 2; 9-2019; 171-1830004-637X1538-4357CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/ab3797info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/ab3797info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:39:22Zoai:ri.conicet.gov.ar:11336/128036instacron: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:34982025-10-15 15:39:22.646CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Hunting young white dwarfs at the Center of Planetary Nebulae
title Hunting young white dwarfs at the Center of Planetary Nebulae
spellingShingle Hunting young white dwarfs at the Center of Planetary Nebulae
Ahumada, Javier Alejandro
PLANETARY NEBULAE NUCLEI
PLANETARY NEBULAE
WHITE DWARF STARS
SUBDWARF STARS
title_short Hunting young white dwarfs at the Center of Planetary Nebulae
title_full Hunting young white dwarfs at the Center of Planetary Nebulae
title_fullStr Hunting young white dwarfs at the Center of Planetary Nebulae
title_full_unstemmed Hunting young white dwarfs at the Center of Planetary Nebulae
title_sort Hunting young white dwarfs at the Center of Planetary Nebulae
dc.creator.none.fl_str_mv Ahumada, Javier Alejandro
Weidmann, Walter Alfredo
Miller Bertolami, Marcelo Miguel
Saker, Leila Yamila
author Ahumada, Javier Alejandro
author_facet Ahumada, Javier Alejandro
Weidmann, Walter Alfredo
Miller Bertolami, Marcelo Miguel
Saker, Leila Yamila
author_role author
author2 Weidmann, Walter Alfredo
Miller Bertolami, Marcelo Miguel
Saker, Leila Yamila
author2_role author
author
author
dc.subject.none.fl_str_mv PLANETARY NEBULAE NUCLEI
PLANETARY NEBULAE
WHITE DWARF STARS
SUBDWARF STARS
topic PLANETARY NEBULAE NUCLEI
PLANETARY NEBULAE
WHITE DWARF STARS
SUBDWARF STARS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present Gemini-South observations of nine faint and extended planetary nebulae (PNe). Using direct images taken with the spectrograph Gemini-South multi-object spectrograph (GMOS), we built the (u¢-g¢) versus (g¢-r¢) diagrams of the stars in the observed areas which allowed us to consider their geometrical positions and identify the probable central stars of the nebulae. Our stellar spectra of seven stars, also taken with GMOS, indicate that four (and probably two more) objects are white dwarfs of the DAO subtype. Moreover, the white dwarf status of the four stars is confirmed by the parameters Teff and log g derived with the help of theoretical stellar spectra. Given this evidence, we propose that these hot stars are the central ionizing sources of the nebulae. With this work we hope to help improve the current scarce statistics on central white dwarfs in PNe.
Fil: Ahumada, Javier Alejandro. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Weidmann, Walter Alfredo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Miller Bertolami, Marcelo Miguel. 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: Saker, Leila Yamila. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
description We present Gemini-South observations of nine faint and extended planetary nebulae (PNe). Using direct images taken with the spectrograph Gemini-South multi-object spectrograph (GMOS), we built the (u¢-g¢) versus (g¢-r¢) diagrams of the stars in the observed areas which allowed us to consider their geometrical positions and identify the probable central stars of the nebulae. Our stellar spectra of seven stars, also taken with GMOS, indicate that four (and probably two more) objects are white dwarfs of the DAO subtype. Moreover, the white dwarf status of the four stars is confirmed by the parameters Teff and log g derived with the help of theoretical stellar spectra. Given this evidence, we propose that these hot stars are the central ionizing sources of the nebulae. With this work we hope to help improve the current scarce statistics on central white dwarfs in PNe.
publishDate 2019
dc.date.none.fl_str_mv 2019-09
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/11336/128036
Ahumada, Javier Alejandro; Weidmann, Walter Alfredo; Miller Bertolami, Marcelo Miguel; Saker, Leila Yamila; Hunting young white dwarfs at the Center of Planetary Nebulae; IOP Publishing; Astrophysical Journal; 882; 2; 9-2019; 171-183
0004-637X
1538-4357
CONICET Digital
CONICET
url http://hdl.handle.net/11336/128036
identifier_str_mv Ahumada, Javier Alejandro; Weidmann, Walter Alfredo; Miller Bertolami, Marcelo Miguel; Saker, Leila Yamila; Hunting young white dwarfs at the Center of Planetary Nebulae; IOP Publishing; Astrophysical Journal; 882; 2; 9-2019; 171-183
0004-637X
1538-4357
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://iopscience.iop.org/article/10.3847/1538-4357/ab3797
info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/ab3797
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
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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 12.891075

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