Radial stellar pulsation and three-dimensional convection. III. Comparison of two-dimensional and three-dimensional convection effects on radial pulsation

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dc.creator Geroux, Christopher M.
dc.creator Deupree, Robert G. (Robert Gaston), 1946-
dc.date.accessioned 2018-03-28T13:56:53Z
dc.date.available 2018-03-28T13:56:53Z
dc.date.issued 2014-03-10
dc.identifier.issn 0004-637X
dc.identifier.uri http://library2.smu.ca/handle/01/27382
dc.description Publishers' Version/PDF
dc.description.abstract We have developed a multi-dimensional radiation hydrodynamics code to simulate the interaction of radial stellar pulsation and convection for full-amplitude pulsating models. Convection is computed using large eddy simulations. Here, we perform three-dimensional (3D) simulations of RR Lyrae stars for comparison with previously reported 2D simulations. We find that the time-dependent behavior of the peak convective flux on pulsation phase is very similar in both the 2D and 3D calculations. The growth rates of the pulsation in the 2D calculations are about 0.1% higher than in the 3D calculations. The amplitude of the light curve for a 6500 K RR Lyrae model is essentially the same for our 2D and 3D calculations, as is the rising light curve. There are differences in the slope at various times during falling light.
dc.language.iso en en_CA
dc.publisher American Physical Society en_CA
dc.relation.uri https://dx.doi.org/10.1088/0004-637X/783/2/107
dc.rights Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.
dc.subject.lcsh Convection (Astrophysics)
dc.subject.lcsh Stellar oscillations
dc.subject.lcsh Hydrodynamics
dc.subject.lcsh RR Lyrae stars
dc.title Radial stellar pulsation and three-dimensional convection. III. Comparison of two-dimensional and three-dimensional convection effects on radial pulsation en_CA
dc.type Text en_CA
dcterms.bibliographicCitation The Astrophysical Journal 783(2), 107. (2014) en_CA


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Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.
 
Published Version: https://dx.doi.org/10.1088/0004-637X/783/2/107
 
 

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