Effects of Opacity on Stellar Radii and Their Relevance to Observational Data

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dc.authoridInlek, Gulay/0000-0002-4884-1437
dc.contributor.authorInlek, Guelay
dc.contributor.authorBoeke, Aysun
dc.contributor.authorYilmaz, Oktay
dc.contributor.authorBudding, Edwin
dc.date.accessioned2025-01-27T21:21:33Z
dc.date.available2025-01-27T21:21:33Z
dc.date.issued2008
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractWe have examined the effect of varying opacities on envelope structure with the aid of Paczynski's public domain stellar modelling programs. For this, we prepared new opacity tables from the data of Kurucz [1], using Lagrange interpolation to obtain the tabular values. We compare the results of these Kurucz opacities with similar tabulations from Huebner et al. [2], Iglesias and Rogers [3], Rogers and Iglesias [4] and Iglesias and Rogers [5]. We have checked calculations for the same ranges of stars considered originally by Schwarzschild [6], and compared our findings, using newer opacity data, with those of other sources. We consider how such calculations relate to high accuracy observational data, with the well-observed planetary eclipsing system V 376 Peg (HD 209458), providing a guideline towards data of similar accuracy in the near future. Current accuracies on absolute radii and masses derivable from eclipsing spectroscopic binaries are conservatively estimated at similar to 1%. The effects of revised opacity calculations on the radii of stars of intermediate mass are several times greater than this (5-10% for constant values of other parameters), so that eclipsing binary data should have good potential for independent tests of opacity theory across a wide range of stellar types.
dc.identifier.endpage77
dc.identifier.issn1300-0101
dc.identifier.issn1303-6122
dc.identifier.issue2
dc.identifier.scopus2-s2.0-45149123968
dc.identifier.scopusqualityQ2
dc.identifier.startpage65
dc.identifier.urihttps://hdl.handle.net/20.500.12428/28991
dc.identifier.volume32
dc.identifier.wosWOS:000420263800002
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTubitak Scientific & Technological Research Council Turkey
dc.relation.ispartofTurkish Journal of Physics
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectStars: general-structure: modelling
dc.subjectopacity tables
dc.subjectobservational tests
dc.subjecteclipsing binary data
dc.titleEffects of Opacity on Stellar Radii and Their Relevance to Observational Data
dc.typeArticle

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