Quantitative analysis of the oscillation spectrum of [eta] Bootis

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dc.creator Guenther, David B.
dc.date.accessioned 2015-02-06T16:04:06Z
dc.date.available 2015-02-06T16:04:06Z
dc.date.issued 2004-09
dc.identifier.issn 0004-637X
dc.identifier.issn 1538-4357
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/25945
dc.description Publisher's version/PDF en_CA
dc.description.abstract We analyze the recent ground-based p-mode oscillation observations of [eta] Boo by Kjeldsen and his collaborators using a large and dense grid of stellar model oscillation spectra parameterized by mass, age, and metallicity. The differences between the model and observed oscillation spectra are quantified by a [subscript X][superscript 2] formulation. Based on the seismic data alone we determine two possible solutions for [eta] Boo’s mass, age, and metallicity. One solution exhibits mode bumping and is within 1 [sigma] of [eta] Boo’s observed luminosity, effective temperature, and metallicity, and the other solution does not exhibit mode bumping and is within 2 [sigma] of [eta] Boo’s observed luminosity, effective temperature, and metallicity. We show how mode bumping (also associated with the terms ‘‘mixed modes’’ and ‘‘avoided crossings’’) can be used to fine-tune the age determination. We also show that the nonadiabatic model frequencies are in better agreement with the observed frequencies than the adiabatic frequencies. en_CA
dc.language.iso en en_CA
dc.publisher American Astronomical Society en_CA
dc.relation.uri http://dx.doi.org/10.1086/422465
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 Subgiant stars
dc.subject.lcsh Stars -- Structure
dc.subject.lcsh Stellar oscillations
dc.title Quantitative analysis of the oscillation spectrum of [eta] Bootis en_CA
dc.type Text en_CA
dcterms.bibliographicCitation Astrophysical Journal 612(1), 454-462. (2004) 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: http://dx.doi.org/10.1086/422465
 
 

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