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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/10494

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oai_identifier_str oai:ri.conicet.gov.ar:11336/10494
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network_name_str CONICET Digital (CONICET)
spelling 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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