MAIN-SEQUENCE EFFECTIVE TEMPERATURES FROM A REVISED MASS-LUMINOSITY RELATION BASED ON ACCURATE PROPERTIES

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dc.authoridBilir, Selcuk/0000-0003-3510-1509
dc.authoridYaz Gokce, Esma/0000-0003-0958-2935
dc.authoridSoydugan, Faruk/0000-0002-5141-7645
dc.contributor.authorEker, Z.
dc.contributor.authorSoydugan, Faruk
dc.contributor.authorSoydugan, Esin
dc.contributor.authorBilir, S.
dc.contributor.authorGokce, E. Yaz
dc.contributor.authorSteer, I.
dc.contributor.authorTuysuz, M.
dc.date.accessioned2025-01-27T21:02:08Z
dc.date.available2025-01-27T21:02:08Z
dc.date.issued2015
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe mass-luminosity (M-L), mass-radius (M-R), and mass-effective temperature (M-T-eff) diagrams for a subset of galactic nearby main-sequence stars with masses and radii accurate to <= 3% and luminosities accurate to <= 30% (268 stars) has led to a putative discovery. Four distinct mass domains have been identified, which we have tentatively associated with low, intermediate, high, and very high mass main-sequence stars, but which nevertheless are clearly separated by three distinct break points at 1.05, 2.4, and 7 M-circle dot within the studied mass range of 0.38-32 M-circle dot. Further, a revised mass-luminosity relation (MLR) is found based on linear fits for each of the mass domains identified. The revised, mass-domain based MLRs, which are classical (L proportional to M-alpha), are shown to be preferable to a single linear, quadratic, or cubic equation representing an alternative MLR. Stellar radius evolution within the main sequence for stars with M > 1 M-circle dot is clearly evident on the M-R diagram, but it is not clear on the M-T-eff diagram based on published temperatures. Effective temperatures can be calculated directly using the well known Stephan-Boltzmann law by employing the accurately known values of M and R with the newly defined MLRs. With the calculated temperatures, stellar temperature evolution within the main sequence for stars with M>1 M-circle dot is clearly visible on the M-T-eff diagram. Our study asserts that it is now possible to compute the effective temperature of a main-sequence star with an accuracy of similar to 6%, as long as its observed radius error is adequately small (<1%) and its observed mass error is reasonably small (<6%).
dc.description.sponsorshipScientific and Technological Research Council (TUBITAK) [106T688, 111T224]
dc.description.sponsorshipThe authors are grateful to the anonymous referee whose comments were very useful in improving the manuscript. This work has been supported in part by the Scientific and Technological Research Council (TUBITAK) grant numbers 106T688 and 111T224. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France and NASA's Astrophysics Data System Bibliographic Services.
dc.identifier.doi10.1088/0004-6256/149/4/131
dc.identifier.issn0004-6256
dc.identifier.issn1538-3881
dc.identifier.issue4
dc.identifier.scopus2-s2.0-84926652144
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1088/0004-6256/149/4/131
dc.identifier.urihttps://hdl.handle.net/20.500.12428/27289
dc.identifier.volume149
dc.identifier.wosWOS:000352336800015
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherIop Publishing Ltd
dc.relation.ispartofAstronomical Journal
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectbinaries: eclipsing
dc.subjectbinaries: spectroscopic
dc.subjectcatalogs
dc.subjectstars: fundamental parameters
dc.titleMAIN-SEQUENCE EFFECTIVE TEMPERATURES FROM A REVISED MASS-LUMINOSITY RELATION BASED ON ACCURATE PROPERTIES
dc.typeArticle

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