Measuring the evolutionary rate of cooling of ZZ Ceti
- Autores
- Mukadam, Anjum S.; Bischoff Kim, Agnes; Fraser, Oliver; Corsico, Alejandro Hugo; Montgomery, M. H.; Kepler, S. O.; Romero, A. D.; Winget, D. E.; Hermes, J. J.; Riecken, T. S.; Kronberg, M. E.; Winget, K. I.; Falcon, Ross E.; Chandler, D. W.; Kuehne, J. W.; Sullivan, D. J.; Reaves, D.; von Hippel, T.; Mullally, F.; Shipman,H.; Thompson, S. E.; Silvestri, N. M.; Hynes, R. I.
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We have finally measured the evolutionary rate of cooling of the pulsating hydrogen atmosphere (DA) white dwarf ZZ Ceti (Ross 548), as reflected by the drift rate of the 213.13260694 s period. Using 41 yr of time-series photometry from 1970 November to 2012 January, we determine the rate of change of this period with time to be dP/dt = (5.2 ± 1.4) × 10–15 s s–1 employing the O – C method and (5.45 ± 0.79) × 10–15 s s–1 using a direct nonlinear least squares fit to the entire lightcurve. We adopt the dP/dt obtained from the nonlinear least squares program as our final determination, but augment the corresponding uncertainty to a more realistic value, ultimately arriving at the measurement of dP/dt = (5.5 ± 1.0) × 10–15 s s–1. After correcting for proper motion, the evolutionary rate of cooling of ZZ Ceti is computed to be (3.3 ± 1.1) × 10–15 s s–1. This value is consistent within uncertainties with the measurement of (4.19 ± 0.73) × 10–15 s s–1 for another similar pulsating DA white dwarf, G 117-B15A. Measuring the cooling rate of ZZ Ceti helps us refine our stellar structure and evolutionary models, as cooling depends mainly on the core composition and stellar mass. Calibrating white dwarf cooling curves with this measurement will reduce the theoretical uncertainties involved in white dwarf cosmochronometry. Should the 213.13 s period be trapped in the hydrogen envelope, then our determination of its drift rate compared to the expected evolutionary rate suggests an additional source of stellar cooling. Attributing the excess cooling to the emission of axions imposes a constraint on the mass of the hypothetical axion particle.
Fil: Mukadam, Anjum S. . University of Washington; Estados Unidos
Fil: Bischoff Kim, Agnes . Georgia State University; Estados Unidos
Fil: Fraser, Oliver. University of Washington; Estados Unidos
Fil: Corsico, Alejandro Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Montgomery, M. H. . University of Texas at Austin; Estados Unidos
Fil: Kepler, S. O. . Universidade Federal do Rio Grande do Sul; Brasil
Fil: Romero, A. D. . Universidade Federal do Rio Grande do Sul; Brasil
Fil: Winget, D. E. . University of Texas at Austin; Estados Unidos
Fil: Hermes, J. J. . University of Texas at Austin; Estados Unidos
Fil: Riecken, T. S. . Washington State University; Estados Unidos
Fil: Kronberg, M. E. . University of Washington; Estados Unidos
Fil: Winget, K. I. . University of Texas at Austin; Estados Unidos
Fil: Falcon, Ross E. . University of Texas at Austin; Estados Unidos
Fil: Chandler, D. W. . Central Texas Astronomical Society. Meyer Observatory; Estados Unidos
Fil: Kuehne, J. W. . McDonald Observatory; Estados Unidos
Fil: Sullivan, D. J. . Victoria University of Wellington; Nueva Zelanda
Fil: Reaves, D. . University of Texas at Austin; Estados Unidos
Fil: von Hippel, T. . Embry-Riddle Aeronautical University; Estados Unidos
Fil: Mullally, F. . National Aeronautics And Space Administration; Estados Unidos
Fil: Shipman,H. . Delaware Asteroseismic Research Center; Estados Unidos
Fil: Thompson, S. E. . National Aeronautics And Space Administration; Estados Unidos
Fil: Silvestri, N. M. . University of Washington; Estados Unidos
Fil: Hynes, R. I. . State University Of Louisiana; Estados Unidos - Materia
-
Evolution of stars
ZZ Ceti R548 (estrella)
Pulsations
Variable stars
White dwarfs - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR)
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/10494
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Measuring the evolutionary rate of cooling of ZZ CetiMukadam, Anjum S. Bischoff Kim, Agnes Fraser, OliverCorsico, Alejandro HugoMontgomery, M. H. Kepler, S. O. Romero, A. D. Winget, D. E. Hermes, J. J. Riecken, T. S. Kronberg, M. E. Winget, K. I. Falcon, Ross E. Chandler, D. W. Kuehne, J. W. Sullivan, D. J. Reaves, D. von Hippel, T. Mullally, F. Shipman,H. Thompson, S. E. Silvestri, N. M. Hynes, R. I. Evolution of starsZZ Ceti R548 (estrella)PulsationsVariable starsWhite dwarfshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We have finally measured the evolutionary rate of cooling of the pulsating hydrogen atmosphere (DA) white dwarf ZZ Ceti (Ross 548), as reflected by the drift rate of the 213.13260694 s period. Using 41 yr of time-series photometry from 1970 November to 2012 January, we determine the rate of change of this period with time to be dP/dt = (5.2 ± 1.4) × 10–15 s s–1 employing the O – C method and (5.45 ± 0.79) × 10–15 s s–1 using a direct nonlinear least squares fit to the entire lightcurve. We adopt the dP/dt obtained from the nonlinear least squares program as our final determination, but augment the corresponding uncertainty to a more realistic value, ultimately arriving at the measurement of dP/dt = (5.5 ± 1.0) × 10–15 s s–1. After correcting for proper motion, the evolutionary rate of cooling of ZZ Ceti is computed to be (3.3 ± 1.1) × 10–15 s s–1. This value is consistent within uncertainties with the measurement of (4.19 ± 0.73) × 10–15 s s–1 for another similar pulsating DA white dwarf, G 117-B15A. Measuring the cooling rate of ZZ Ceti helps us refine our stellar structure and evolutionary models, as cooling depends mainly on the core composition and stellar mass. Calibrating white dwarf cooling curves with this measurement will reduce the theoretical uncertainties involved in white dwarf cosmochronometry. Should the 213.13 s period be trapped in the hydrogen envelope, then our determination of its drift rate compared to the expected evolutionary rate suggests an additional source of stellar cooling. Attributing the excess cooling to the emission of axions imposes a constraint on the mass of the hypothetical axion particle.Fil: Mukadam, Anjum S. . University of Washington; Estados UnidosFil: Bischoff Kim, Agnes . Georgia State University; Estados UnidosFil: Fraser, Oliver. University of Washington; Estados UnidosFil: Corsico, Alejandro Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; ArgentinaFil: Montgomery, M. H. . University of Texas at Austin; Estados UnidosFil: Kepler, S. O. . Universidade Federal do Rio Grande do Sul; BrasilFil: Romero, A. D. . Universidade Federal do Rio Grande do Sul; BrasilFil: Winget, D. E. . University of Texas at Austin; Estados UnidosFil: Hermes, J. J. . University of Texas at Austin; Estados UnidosFil: Riecken, T. S. . Washington State University; Estados UnidosFil: Kronberg, M. E. . University of Washington; Estados UnidosFil: Winget, K. I. . University of Texas at Austin; Estados UnidosFil: Falcon, Ross E. . University of Texas at Austin; Estados UnidosFil: Chandler, D. W. . Central Texas Astronomical Society. Meyer Observatory; Estados UnidosFil: Kuehne, J. W. . McDonald Observatory; Estados UnidosFil: Sullivan, D. J. . Victoria University of Wellington; Nueva ZelandaFil: Reaves, D. . University of Texas at Austin; Estados UnidosFil: von Hippel, T. . Embry-Riddle Aeronautical University; Estados UnidosFil: Mullally, F. . National Aeronautics And Space Administration; Estados UnidosFil: Shipman,H. . Delaware Asteroseismic Research Center; Estados UnidosFil: Thompson, S. E. . National Aeronautics And Space Administration; Estados UnidosFil: Silvestri, N. M. . University of Washington; Estados UnidosFil: Hynes, R. I. . State University Of Louisiana; Estados UnidosIop Publishing2013-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10494Mukadam, Anjum S. ; Bischoff Kim, Agnes ; Fraser, Oliver; Corsico, Alejandro Hugo; Montgomery, M. H. ; et al.; Measuring the evolutionary rate of cooling of ZZ Ceti; Iop Publishing; Astrophysical Journal; 771; 7-2013; 17-280004-637Xenginfo:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/771/1/17/metainfo:eu-repo/semantics/openAccessAtribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR)https://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:43:13Zoai:ri.conicet.gov.ar:11336/10494instacron: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 09:43:13.64CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Measuring the evolutionary rate of cooling of ZZ Ceti |
title |
Measuring the evolutionary rate of cooling of ZZ Ceti |
spellingShingle |
Measuring the evolutionary rate of cooling of ZZ Ceti Mukadam, Anjum S. Evolution of stars ZZ Ceti R548 (estrella) Pulsations Variable stars White dwarfs |
title_short |
Measuring the evolutionary rate of cooling of ZZ Ceti |
title_full |
Measuring the evolutionary rate of cooling of ZZ Ceti |
title_fullStr |
Measuring the evolutionary rate of cooling of ZZ Ceti |
title_full_unstemmed |
Measuring the evolutionary rate of cooling of ZZ Ceti |
title_sort |
Measuring the evolutionary rate of cooling of ZZ Ceti |
dc.creator.none.fl_str_mv |
Mukadam, Anjum S. Bischoff Kim, Agnes Fraser, Oliver Corsico, Alejandro Hugo Montgomery, M. H. Kepler, S. O. Romero, A. D. Winget, D. E. Hermes, J. J. Riecken, T. S. Kronberg, M. E. Winget, K. I. Falcon, Ross E. Chandler, D. W. Kuehne, J. W. Sullivan, D. J. Reaves, D. von Hippel, T. Mullally, F. Shipman,H. Thompson, S. E. Silvestri, N. M. Hynes, R. I. |
author |
Mukadam, Anjum S. |
author_facet |
Mukadam, Anjum S. Bischoff Kim, Agnes Fraser, Oliver Corsico, Alejandro Hugo Montgomery, M. H. Kepler, S. O. Romero, A. D. Winget, D. E. Hermes, J. J. Riecken, T. S. Kronberg, M. E. Winget, K. I. Falcon, Ross E. Chandler, D. W. Kuehne, J. W. Sullivan, D. J. Reaves, D. von Hippel, T. Mullally, F. Shipman,H. Thompson, S. E. Silvestri, N. M. Hynes, R. I. |
author_role |
author |
author2 |
Bischoff Kim, Agnes Fraser, Oliver Corsico, Alejandro Hugo Montgomery, M. H. Kepler, S. O. Romero, A. D. Winget, D. E. Hermes, J. J. Riecken, T. S. Kronberg, M. E. Winget, K. I. Falcon, Ross E. Chandler, D. W. Kuehne, J. W. Sullivan, D. J. Reaves, D. von Hippel, T. Mullally, F. Shipman,H. Thompson, S. E. Silvestri, N. M. Hynes, R. I. |
author2_role |
author author author author author author author author author author author author author author author author author author author author author author |
dc.subject.none.fl_str_mv |
Evolution of stars ZZ Ceti R548 (estrella) Pulsations Variable stars White dwarfs |
topic |
Evolution of stars ZZ Ceti R548 (estrella) Pulsations Variable stars White dwarfs |
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 have finally measured the evolutionary rate of cooling of the pulsating hydrogen atmosphere (DA) white dwarf ZZ Ceti (Ross 548), as reflected by the drift rate of the 213.13260694 s period. Using 41 yr of time-series photometry from 1970 November to 2012 January, we determine the rate of change of this period with time to be dP/dt = (5.2 ± 1.4) × 10–15 s s–1 employing the O – C method and (5.45 ± 0.79) × 10–15 s s–1 using a direct nonlinear least squares fit to the entire lightcurve. We adopt the dP/dt obtained from the nonlinear least squares program as our final determination, but augment the corresponding uncertainty to a more realistic value, ultimately arriving at the measurement of dP/dt = (5.5 ± 1.0) × 10–15 s s–1. After correcting for proper motion, the evolutionary rate of cooling of ZZ Ceti is computed to be (3.3 ± 1.1) × 10–15 s s–1. This value is consistent within uncertainties with the measurement of (4.19 ± 0.73) × 10–15 s s–1 for another similar pulsating DA white dwarf, G 117-B15A. Measuring the cooling rate of ZZ Ceti helps us refine our stellar structure and evolutionary models, as cooling depends mainly on the core composition and stellar mass. Calibrating white dwarf cooling curves with this measurement will reduce the theoretical uncertainties involved in white dwarf cosmochronometry. Should the 213.13 s period be trapped in the hydrogen envelope, then our determination of its drift rate compared to the expected evolutionary rate suggests an additional source of stellar cooling. Attributing the excess cooling to the emission of axions imposes a constraint on the mass of the hypothetical axion particle. Fil: Mukadam, Anjum S. . University of Washington; Estados Unidos Fil: Bischoff Kim, Agnes . Georgia State University; Estados Unidos Fil: Fraser, Oliver. University of Washington; Estados Unidos Fil: Corsico, Alejandro Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina Fil: Montgomery, M. H. . University of Texas at Austin; Estados Unidos Fil: Kepler, S. O. . Universidade Federal do Rio Grande do Sul; Brasil Fil: Romero, A. D. . Universidade Federal do Rio Grande do Sul; Brasil Fil: Winget, D. E. . University of Texas at Austin; Estados Unidos Fil: Hermes, J. J. . University of Texas at Austin; Estados Unidos Fil: Riecken, T. S. . Washington State University; Estados Unidos Fil: Kronberg, M. E. . University of Washington; Estados Unidos Fil: Winget, K. I. . University of Texas at Austin; Estados Unidos Fil: Falcon, Ross E. . University of Texas at Austin; Estados Unidos Fil: Chandler, D. W. . Central Texas Astronomical Society. Meyer Observatory; Estados Unidos Fil: Kuehne, J. W. . McDonald Observatory; Estados Unidos Fil: Sullivan, D. J. . Victoria University of Wellington; Nueva Zelanda Fil: Reaves, D. . University of Texas at Austin; Estados Unidos Fil: von Hippel, T. . Embry-Riddle Aeronautical University; Estados Unidos Fil: Mullally, F. . National Aeronautics And Space Administration; Estados Unidos Fil: Shipman,H. . Delaware Asteroseismic Research Center; Estados Unidos Fil: Thompson, S. E. . National Aeronautics And Space Administration; Estados Unidos Fil: Silvestri, N. M. . University of Washington; Estados Unidos Fil: Hynes, R. I. . State University Of Louisiana; Estados Unidos |
description |
We have finally measured the evolutionary rate of cooling of the pulsating hydrogen atmosphere (DA) white dwarf ZZ Ceti (Ross 548), as reflected by the drift rate of the 213.13260694 s period. Using 41 yr of time-series photometry from 1970 November to 2012 January, we determine the rate of change of this period with time to be dP/dt = (5.2 ± 1.4) × 10–15 s s–1 employing the O – C method and (5.45 ± 0.79) × 10–15 s s–1 using a direct nonlinear least squares fit to the entire lightcurve. We adopt the dP/dt obtained from the nonlinear least squares program as our final determination, but augment the corresponding uncertainty to a more realistic value, ultimately arriving at the measurement of dP/dt = (5.5 ± 1.0) × 10–15 s s–1. After correcting for proper motion, the evolutionary rate of cooling of ZZ Ceti is computed to be (3.3 ± 1.1) × 10–15 s s–1. This value is consistent within uncertainties with the measurement of (4.19 ± 0.73) × 10–15 s s–1 for another similar pulsating DA white dwarf, G 117-B15A. Measuring the cooling rate of ZZ Ceti helps us refine our stellar structure and evolutionary models, as cooling depends mainly on the core composition and stellar mass. Calibrating white dwarf cooling curves with this measurement will reduce the theoretical uncertainties involved in white dwarf cosmochronometry. Should the 213.13 s period be trapped in the hydrogen envelope, then our determination of its drift rate compared to the expected evolutionary rate suggests an additional source of stellar cooling. Attributing the excess cooling to the emission of axions imposes a constraint on the mass of the hypothetical axion particle. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-07 |
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/11336/10494 Mukadam, Anjum S. ; Bischoff Kim, Agnes ; Fraser, Oliver; Corsico, Alejandro Hugo; Montgomery, M. H. ; et al.; Measuring the evolutionary rate of cooling of ZZ Ceti; Iop Publishing; Astrophysical Journal; 771; 7-2013; 17-28 0004-637X |
url |
http://hdl.handle.net/11336/10494 |
identifier_str_mv |
Mukadam, Anjum S. ; Bischoff Kim, Agnes ; Fraser, Oliver; Corsico, Alejandro Hugo; Montgomery, M. H. ; et al.; Measuring the evolutionary rate of cooling of ZZ Ceti; Iop Publishing; Astrophysical Journal; 771; 7-2013; 17-28 0004-637X |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/ info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/771/1/17/meta |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR) https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR) 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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13.070432 |