Absolute parameters of young stars: PU Pup

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dc.authorid0000-0001-5289-8850en_US
dc.authorid0000-0002-0303-3516en_US
dc.authorid0000-0002-6764-9299en_US
dc.authorscopusid56266032500en_US
dc.authorscopusid13608440800en_US
dc.authorscopusid15072916400en_US
dc.authorwosid-en_US
dc.authorwosid-en_US
dc.authorwosid-en_US
dc.contributor.authorErdem, Ahmet
dc.contributor.authorSürgit, Derya
dc.contributor.authorBanks, Timothy S.
dc.contributor.authorÖzkardeş, Burcu
dc.contributor.authorBudding, Edwin
dc.date.accessioned2022-07-26T12:56:14Z
dc.date.available2022-07-26T12:56:14Z
dc.date.issued2021en_US
dc.departmentFakülteler, Fen Fakültesi, Fizik Bölümü
dc.departmentFakülteler, Fen Fakültesi, Uzay Bilimleri ve Teknolojileri Bölümü
dc.description.abstractWe present combined photometric and spectroscopic analyses of the southern binary star PU Pup. High-resolution spectra of this system were taken at the University of Canterbury Mt. John Observatory in the years 2008 and again in 2014-15. We find the light contribution of the secondary component to be only ∼2% of the total light of the system in optical wavelengths, resulting in a single-lined spectroscopic binary. Recent TESS data revealed grazing eclipses within the light minima, though the tidal distortion, examined also from HIPPARCOS data, remains the predominating light curve effect. Our model shows PU Pup to have the more massive primary relatively close to filling its Roche lobe. PU Pup is thus approaching the rare ‘fast phase’ of interactive (Case B) evolution. Our adopted absolute parameters are as follows: M1 = 4.10 (±0.20) M , M2 = 0.65 (±0.05) M , R1 = 6.60 (±0.30) R , R2 = 0.90 (±0.10) R ; T1 = 11500 (±500) K, T2 = 5000 (±350) K; photometric distance = 186 (±20) pc, age = 170 (±20) My. The less-massive secondary component is found to be significantly oversized and overluminous compared to standard Main Sequence models. We discuss this discrepancy referring to heating from the reflection effect.en_US
dc.identifier.citationErdem, A., Sürgit, D., Banks, T. S., Ozkardeş, B., & Budding, E. (2021). Absolute parameters of young stars: PU pup. Research in Astronomy and Astrophysics, 21(10) doi:10.1088/1674-4527/21/10/256en_US
dc.identifier.doi10.1088/1674-4527/21/10/256
dc.identifier.endpage21en_US
dc.identifier.issn1674-4527
dc.identifier.issn2397-6209
dc.identifier.issue10en_US
dc.identifier.scopus2-s2.0-85122685996
dc.identifier.startpage1en_US
dc.identifier.urihttps://doi.org/10.1088/1674-4527/21/10/256
dc.identifier.urihttps://hdl.handle.net/20.500.12428/3632
dc.identifier.volume21en_US
dc.identifier.wosWOS:000723857800001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorErdem, Ahmet
dc.institutionauthorSürgit, Derya
dc.institutionauthorÖzkardeş, Burcu
dc.language.isoen
dc.publisherIOP Publishingen_US
dc.relation.ispartofResearch in Astronomy and Astrophysics (RAA)en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectStars: Binaries (İncluding Multiple) Closeen_US
dc.subjectStars: Early Typeen_US
dc.subjectStars: İndividual PU Pupen_US
dc.subjectThe Galaxy: Stellar Contenten_US
dc.titleAbsolute parameters of young stars: PU Pup
dc.typeArticle

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