A refined search for pulsations in white dwarf companions to millisecond pulsars

Autores
Kilic, Mukremin; Hermes, J. J.; Córsico, Alejandro Hugo; Kosakowski, Alekzander; Brown, Warren R.; Antoniadis, John; Calcaferro, Leila Magdalena; Gianninas, A.; Althaus, Leandro Gabriel; Green, M. J.
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present optical high-speed photometry of three millisecond pulsars with low-mass (< 0.3M⊙) white dwarf companions, bringing the total number of such systemswith follow-up time-series photometry to five. We confirm the detection of pulsations in one system, the white dwarf companion to PSR J1738+0333, and show that the pulsation frequencies and amplitudes are variable over many months. A full asteroseismic analysis for this star is underconstrained, but the mode periods we observe are consistent with expectations for an M⁎ = 0.16-0.19 M⊙ white dwarf, as suggested from spectroscopy. We also present the empirical boundaries of the instability strip for low-mass white dwarfs based on the full sample of white dwarfs, and discuss the distinction between pulsating low-mass white dwarfs and subdwarf A/F stars.
Instituto de Astrofísica de La Plata
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Astronomía
stars: oscillations
stars: variables: general
white dwarfs
pulsars: individual: PSR J1738+0333, PSR J1911– 5958A, PSR J2234+0611
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/93481

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network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling A refined search for pulsations in white dwarf companions to millisecond pulsarsKilic, MukreminHermes, J. J.Córsico, Alejandro HugoKosakowski, AlekzanderBrown, Warren R.Antoniadis, JohnCalcaferro, Leila MagdalenaGianninas, A.Althaus, Leandro GabrielGreen, M. J.Astronomíastars: oscillationsstars: variables: generalwhite dwarfspulsars: individual: PSR J1738+0333, PSR J1911– 5958A, PSR J2234+0611We present optical high-speed photometry of three millisecond pulsars with low-mass (< 0.3M⊙) white dwarf companions, bringing the total number of such systemswith follow-up time-series photometry to five. We confirm the detection of pulsations in one system, the white dwarf companion to PSR J1738+0333, and show that the pulsation frequencies and amplitudes are variable over many months. A full asteroseismic analysis for this star is underconstrained, but the mode periods we observe are consistent with expectations for an M⁎ = 0.16-0.19 M⊙ white dwarf, as suggested from spectroscopy. We also present the empirical boundaries of the instability strip for low-mass white dwarfs based on the full sample of white dwarfs, and discuss the distinction between pulsating low-mass white dwarfs and subdwarf A/F stars.Instituto de Astrofísica de La PlataFacultad de Ciencias Astronómicas y Geofísicas2018-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1267-1272http://sedici.unlp.edu.ar/handle/10915/93481enginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/479/1/1267/5036529info:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty1546info:eu-repo/semantics/altIdentifier/hdl/11336/82523info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:11:20Zoai:sedici.unlp.edu.ar:10915/93481Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:11:20.866SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv A refined search for pulsations in white dwarf companions to millisecond pulsars
title A refined search for pulsations in white dwarf companions to millisecond pulsars
spellingShingle A refined search for pulsations in white dwarf companions to millisecond pulsars
Kilic, Mukremin
Astronomía
stars: oscillations
stars: variables: general
white dwarfs
pulsars: individual: PSR J1738+0333, PSR J1911– 5958A, PSR J2234+0611
title_short A refined search for pulsations in white dwarf companions to millisecond pulsars
title_full A refined search for pulsations in white dwarf companions to millisecond pulsars
title_fullStr A refined search for pulsations in white dwarf companions to millisecond pulsars
title_full_unstemmed A refined search for pulsations in white dwarf companions to millisecond pulsars
title_sort A refined search for pulsations in white dwarf companions to millisecond pulsars
dc.creator.none.fl_str_mv Kilic, Mukremin
Hermes, J. J.
Córsico, Alejandro Hugo
Kosakowski, Alekzander
Brown, Warren R.
Antoniadis, John
Calcaferro, Leila Magdalena
Gianninas, A.
Althaus, Leandro Gabriel
Green, M. J.
author Kilic, Mukremin
author_facet Kilic, Mukremin
Hermes, J. J.
Córsico, Alejandro Hugo
Kosakowski, Alekzander
Brown, Warren R.
Antoniadis, John
Calcaferro, Leila Magdalena
Gianninas, A.
Althaus, Leandro Gabriel
Green, M. J.
author_role author
author2 Hermes, J. J.
Córsico, Alejandro Hugo
Kosakowski, Alekzander
Brown, Warren R.
Antoniadis, John
Calcaferro, Leila Magdalena
Gianninas, A.
Althaus, Leandro Gabriel
Green, M. J.
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Astronomía
stars: oscillations
stars: variables: general
white dwarfs
pulsars: individual: PSR J1738+0333, PSR J1911– 5958A, PSR J2234+0611
topic Astronomía
stars: oscillations
stars: variables: general
white dwarfs
pulsars: individual: PSR J1738+0333, PSR J1911– 5958A, PSR J2234+0611
dc.description.none.fl_txt_mv We present optical high-speed photometry of three millisecond pulsars with low-mass (< 0.3M⊙) white dwarf companions, bringing the total number of such systemswith follow-up time-series photometry to five. We confirm the detection of pulsations in one system, the white dwarf companion to PSR J1738+0333, and show that the pulsation frequencies and amplitudes are variable over many months. A full asteroseismic analysis for this star is underconstrained, but the mode periods we observe are consistent with expectations for an M⁎ = 0.16-0.19 M⊙ white dwarf, as suggested from spectroscopy. We also present the empirical boundaries of the instability strip for low-mass white dwarfs based on the full sample of white dwarfs, and discuss the distinction between pulsating low-mass white dwarfs and subdwarf A/F stars.
Instituto de Astrofísica de La Plata
Facultad de Ciencias Astronómicas y Geofísicas
description We present optical high-speed photometry of three millisecond pulsars with low-mass (< 0.3M⊙) white dwarf companions, bringing the total number of such systemswith follow-up time-series photometry to five. We confirm the detection of pulsations in one system, the white dwarf companion to PSR J1738+0333, and show that the pulsation frequencies and amplitudes are variable over many months. A full asteroseismic analysis for this star is underconstrained, but the mode periods we observe are consistent with expectations for an M⁎ = 0.16-0.19 M⊙ white dwarf, as suggested from spectroscopy. We also present the empirical boundaries of the instability strip for low-mass white dwarfs based on the full sample of white dwarfs, and discuss the distinction between pulsating low-mass white dwarfs and subdwarf A/F stars.
publishDate 2018
dc.date.none.fl_str_mv 2018-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/93481
url http://sedici.unlp.edu.ar/handle/10915/93481
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/479/1/1267/5036529
info:eu-repo/semantics/altIdentifier/issn/0035-8711
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty1546
info:eu-repo/semantics/altIdentifier/hdl/11336/82523
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
1267-1272
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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