A refined search for pulsations in white dwarf companions to millisecond pulsars
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 J173...
Guardado en:
| Autores principales: | , , , , , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2018
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/93481 https://academic.oup.com/mnras/article-abstract/479/1/1267/5036529 |
| Aporte de: |
| id |
I19-R120-10915-93481 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Astronomía stars: oscillations stars: variables: general white dwarfs pulsars: individual: PSR J1738+0333, PSR J1911– 5958A, PSR J2234+0611 |
| spellingShingle |
Astronomía stars: oscillations stars: variables: general white dwarfs pulsars: individual: PSR J1738+0333, PSR J1911– 5958A, PSR J2234+0611 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. A refined search for pulsations in white dwarf companions to millisecond pulsars |
| topic_facet |
Astronomía stars: oscillations stars: variables: general white dwarfs pulsars: individual: PSR J1738+0333, PSR J1911– 5958A, PSR J2234+0611 |
| 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. |
| format |
Articulo Articulo |
| author |
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_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_sort |
Kilic, Mukremin |
| title |
A refined search for pulsations in white dwarf companions to millisecond pulsars |
| 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 |
refined search for pulsations in white dwarf companions to millisecond pulsars |
| publishDate |
2018 |
| url |
http://sedici.unlp.edu.ar/handle/10915/93481 https://academic.oup.com/mnras/article-abstract/479/1/1267/5036529 |
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Repositorios |
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