Asteroseismology of the ZZ Ceti and DAZ GD133

Asteroseismology of the ZZ Ceti and DAZ GD133

GD 133 is a DAZ white dwarf with an atmosphere polluted by heavy elements accreted from a debris disk, which is formed by the disruption of rocky planetesimals with orbits bringing them at the white dwarf tidal radius. To reach such orbits implies the potential presence of a perturbing planet. GD133...

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Main Authors: Fu J.-N., Vauclair G., Su J.
Format: Article
Language:English
Published: EDP Sciences 2017-01-01
Series:EPJ Web of Conferences
Online Access:https://doi.org/10.1051/epjconf/201715205006
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spelling doaj-94b720227e194375b5867179b9ee15082021-08-02T13:57:45ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011520500610.1051/epjconf/201715205006epjconf_puls2017_05006Asteroseismology of the ZZ Ceti and DAZ GD133Fu J.-N.0Vauclair G.Su J.1Department of Astronomy, Beijing Normal UniversityDepartment of Astronomy, Beijing Normal UniversityGD 133 is a DAZ white dwarf with an atmosphere polluted by heavy elements accreted from a debris disk, which is formed by the disruption of rocky planetesimals with orbits bringing them at the white dwarf tidal radius. To reach such orbits implies the potential presence of a perturbing planet. GD133 is a ZZ Ceti pulsator close to the blue edge of the instability strip. The presence of a planet could be revealed by the periodical variation of the observed pulsation periods induced by the orbital motion of the white dwarf. We started a multi-site photometric follow-up aimed at detecting the signature of this potential planet. As a partial result of this work in progress, we give the parameters of a preliminary best-fit model derived from asteroseismology.https://doi.org/10.1051/epjconf/201715205006
collection DOAJ
language English
format Article
sources DOAJ
author Fu J.-N.
Vauclair G.
Su J.
spellingShingle Fu J.-N.
Vauclair G.
Su J.
Asteroseismology of the ZZ Ceti and DAZ GD133
EPJ Web of Conferences
author_facet Fu J.-N.
Vauclair G.
Su J.
author_sort Fu J.-N.
title Asteroseismology of the ZZ Ceti and DAZ GD133
title_short Asteroseismology of the ZZ Ceti and DAZ GD133
title_full Asteroseismology of the ZZ Ceti and DAZ GD133
title_fullStr Asteroseismology of the ZZ Ceti and DAZ GD133
title_full_unstemmed Asteroseismology of the ZZ Ceti and DAZ GD133
title_sort asteroseismology of the zz ceti and daz gd133
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2017-01-01
description GD 133 is a DAZ white dwarf with an atmosphere polluted by heavy elements accreted from a debris disk, which is formed by the disruption of rocky planetesimals with orbits bringing them at the white dwarf tidal radius. To reach such orbits implies the potential presence of a perturbing planet. GD133 is a ZZ Ceti pulsator close to the blue edge of the instability strip. The presence of a planet could be revealed by the periodical variation of the observed pulsation periods induced by the orbital motion of the white dwarf. We started a multi-site photometric follow-up aimed at detecting the signature of this potential planet. As a partial result of this work in progress, we give the parameters of a preliminary best-fit model derived from asteroseismology.
url https://doi.org/10.1051/epjconf/201715205006
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AT vauclairg asteroseismologyofthezzcetianddazgd133
AT suj asteroseismologyofthezzcetianddazgd133
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