On oxygen-rich SR variables in the solar neighborhood

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dc.contributor.authorOzdemir, Tuncay
dc.date.accessioned2024-08-04T20:09:53Z
dc.date.available2024-08-04T20:09:53Z
dc.date.issued2018
dc.departmentİnönü Üniversitesien_US
dc.description.abstractBrightness distribution of variable stars was investigated based on good Hipparcos parallaxes of semiregular variables (SRVs) in the solar neighborhood, and it is shown that the order of the variability types Lb, SR, SRb, SRa, and Mira is, statistically, an order of increasing brightness along the red giant branch and asymptotic giant branch. In addition, it is also shown that the majority of Miras are above and majority of SRVs are below the tip of the red giant branch. The periods of SRVs that fall in Wood's sequence C (fundamental mode) of large Magellanic clouds were identified. Statistically, the order of SR, SRb, and Mira variables with increasing period and increasing absolute magnitude is the same in six infrared (IR) band wavelengths. The slope of the P-L relation for SR + SRb variables in sequence C increases systematically with wavelength in the near IR. This indicates that circumstellar IR emission increases with increasing period from the shorter period SRVs to Miras, which is consistent with the high mass loss rate found in long period Miras. (J-K)-M-K diagram suggests that the sequence Lb, SR, SRb, SRab (emission), and Mira may be an evolutionary sequence.en_US
dc.description.sponsorshipInonu University BAP [2010/3]en_US
dc.description.sponsorshipI would like to thank Prof Dr Zeki Aslan for his help and advice. This work was supported Inonu University BAP under grant 2010/3.en_US
dc.identifier.doi10.3906/fiz-1705-1
dc.identifier.endpage26en_US
dc.identifier.issn1300-0101
dc.identifier.issn1303-6122
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85042082668en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage13en_US
dc.identifier.trdizinid256000en_US
dc.identifier.urihttps://doi.org/10.3906/fiz-1705-1
dc.identifier.urihttps://search.trdizin.gov.tr/yayin/detay/256000
dc.identifier.urihttps://hdl.handle.net/11616/92489
dc.identifier.volume42en_US
dc.identifier.wosWOS:000431265900002en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakTR-Dizinen_US
dc.language.isoenen_US
dc.publisherTubitak Scientific & Technological Research Council Turkeyen_US
dc.relation.ispartofTurkish Journal of Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectStarsen_US
dc.subjectdistancesen_US
dc.subjectfundamental parametersen_US
dc.subjectlate-type-starsen_US
dc.subjectoscillationsen_US
dc.titleOn oxygen-rich SR variables in the solar neighborhooden_US
dc.typeArticleen_US

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