ODREDJIVANJE FIZIČKIH PARAMETARA CEFIDA TIPA II

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ODREDJIVANJE FIZIČKIH PARAMETARA CEFIDA TIPA II

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dc.contributor.advisor Latković, Olivera
dc.contributor.author Jurković, Monika
dc.date.accessioned 2018-12-27T13:38:34Z
dc.date.available 2018-12-27T13:38:34Z
dc.date.issued 2018
dc.identifier.uri http://hdl.handle.net/123456789/4751
dc.description.abstract The sub ject of this PhD thesis are Typ e I I Cepheids. Typ e I I Cepheids are pulsating Population I I stars with masses of around 0.5 0.6 M ⊙ . Their mass determines where they are p ositioned on the Hertzsprung-Russell diagram (HRD), that is, their luminosity and e ective temp erature. These stars can b e found in the Milky Way, the Magellanic Clouds, and in other distant galaxies. They o ccupy a narrow strip on the HRD which is called the instability strip. Here the radii and luminosity change p erio dically, and this change can b e seen in the light curves. Because of their age, and their p osition on the HRD, these variables form a separate p erio d-luminosity relation ( P L relation). Using the sp ectral energy distribution mo dels we determined in this thesis the e ective temp eratures and luminosities, and from evolutionary mo dels the masses and radii, for Typ e I I Cepheids and anomalous Cepheids in the Large and Small Magellanic Clouds. In the thesis, the rst p erio d- luminosity relation was constructed using b olometric magnitude ( M b ol ). The thesis also presents the reclassi cation of Typ e I I Cepheids from the Milky Way using the Fourier decomp osition of the light curves measured in V lter. The Fourier decomp osition was used to calculate the Fourier parameters, which were then used to compare the stars from the Milky Way with the sample of known Typ e I I Cepheids and anomalous Cepheids from the OGLE-I I I catalogue for the Large Magellanic Cloud. From the 59 stars (taken from the General Catalogue of Variable Stars), 18 turned out to b e anomalous Cepheids, 1 anomalous Cepheid pulsating in the rst overtone, 11 classical Cepheids, 2 p eculiar W Virginis stars or classical Cepheids, and 7 were found not to b e pulsating stars at all. en_US
dc.description.provenance Submitted by Slavisha Milisavljevic (slavisha) on 2018-12-27T13:38:34Z No. of bitstreams: 1 Jurkovic_Monika.dok.dis.pdf: 15799759 bytes, checksum: bf8b10e70a6f4de7c41832383a41a981 (MD5) en
dc.description.provenance Made available in DSpace on 2018-12-27T13:38:34Z (GMT). No. of bitstreams: 1 Jurkovic_Monika.dok.dis.pdf: 15799759 bytes, checksum: bf8b10e70a6f4de7c41832383a41a981 (MD5) Previous issue date: 2018 en
dc.language.iso sr en_US
dc.publisher Beograd en_US
dc.title ODREDJIVANJE FIZIČKIH PARAMETARA CEFIDA TIPA II en_US
mf.author.birth-date 1981-09-03
mf.author.birth-place Subotica en_US
mf.author.birth-country Srbija en_US
mf.author.residence-state Srbija en_US
mf.author.citizenship Srpsko en_US
mf.subject.area Astronomy en_US
mf.subject.keywords astrophysics, pulsating stars, Typ e I I Cepheids en_US
mf.subject.subarea Astrophysics en_US
mf.contributor.committee Arbutina, Bojan
mf.contributor.committee Kiss, Laszlo
mf.contributor.committee Bono, Giuseppe
mf.university.faculty Mathematics faculty en_US
mf.document.pages 219 en_US
mf.document.location Beograd en_US
mf.document.genealogy-project No en_US
mf.university Belgrade en_US

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