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
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/93481
Ver los metadatos del registro completo
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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 |
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2018-09 |
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http://sedici.unlp.edu.ar/handle/10915/93481 |
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eng |
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eng |
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