Effects of opacity on stellar radii and their relavance to observational data

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dc.contributor.authorİnlek, Gülay
dc.contributor.authorBöke, Aysun
dc.contributor.authorYılmaz, Oktay
dc.contributor.authorBuddıng, Edwin
dc.date.accessioned2025-01-27T19:47:04Z
dc.date.available2025-01-27T19:47:04Z
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 consideredoriginally 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 (HD209458), providing a guideline towards data ofsimilar accuracy in the near future. Current accuracies on absolute radii and masses derivable fromeclipsing spectroscopic binaries are conservatively estimated at ~1%. The effects of revised opacity calculationson 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.startpage65
dc.identifier.trdizinid77232
dc.identifier.urihttps://search.trdizin.gov.tr/tr/yayin/detay/77232
dc.identifier.urihttps://hdl.handle.net/20.500.12428/18441
dc.identifier.volume32
dc.indekslendigikaynakTR-Dizin
dc.language.isoen
dc.relation.ispartofTurkish Journal of Physics
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_TRD_20250125
dc.subjectAstronomi ve Astrofizik
dc.subjectFizik
dc.subjectPartiküller ve Alanlar
dc.titleEffects of opacity on stellar radii and their relavance to observational data
dc.typeArticle

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