prikaz prve stranice dokumenta Planets orbiting evolving binary stars
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master's thesis
Planets orbiting evolving binary stars
2017. urn:nbn:hr:194:728958
Bartolić, Fran
University of Rijeka
Faculty of Physics

Cite this document

Bartolić, F. (2017). Planets orbiting evolving binary stars (Master's thesis). Rijeka: University of Rijeka. Retrieved from https://urn.nsk.hr/urn:nbn:hr:194:728958

Bartolić, Fran. "Planets orbiting evolving binary stars." Master's thesis, University of Rijeka, 2017. https://urn.nsk.hr/urn:nbn:hr:194:728958

Bartolić, Fran. "Planets orbiting evolving binary stars." Master's thesis, University of Rijeka, 2017. https://urn.nsk.hr/urn:nbn:hr:194:728958

Bartolić, F. (2017). 'Planets orbiting evolving binary stars', Master's thesis, University of Rijeka, accessed 12 November 2024, https://urn.nsk.hr/urn:nbn:hr:194:728958

Bartolić F. Planets orbiting evolving binary stars [Master's thesis]. Rijeka: University of Rijeka; 2017 [cited 2024 November 12] Available at: https://urn.nsk.hr/urn:nbn:hr:194:728958

F. Bartolić, "Planets orbiting evolving binary stars", Master's thesis, University of Rijeka, Rijeka, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:194:728958

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Metadata
TitlePlanets orbiting evolving binary stars
Title (croatian)Planeti u orbiti oko evoluirajućih binarnih zvijezda
AuthorFran Bartolić
MentorDijana Dominis Prester (mentor)
Committee memberZdravko Lenac (predsjednik povjerenstva)
Committee memberDijana Dominis Prester (član povjerenstva)
Committee memberTomislav Jurkić (član povjerenstva)
GranterUniversity of Rijeka
(Faculty of Physics)
Rijeka
Defense date and country2017-09-19, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Astronomy and Astrophysics
Abstract
Circumbinary planets have been observed around both main sequence and post common envelope binary stars. It is not clear if a circumbinary system on the main sequence can survive the post main sequence evolution leading to a post common envelope system. In this work we investigate the evolution of circumbinary planets after the binary stars leaves the main sequence and prior to the onset of common envelope evolution. In particular, we focus on the role of divergent mean motion resonance passage which can excite the eccentricity of the planet. We develop a Hamiltonian model of the previously not studied high order 6 : 1 resonance, applicable to circumbinary systems where the mass ratio between the primary and the secondary star can be large. We then integrate the circumbinary system using an N-body code coupled with a stellar evolution code and compare the results with the analytical model. The results show that the resonances have a small effect in most cases with the effect of secular decrease in eccentricity being dominant. In the majority of cases the planets survive the evolution prior to the common envelope.
Abstract (croatian)
Planeti u orbiti oko binarnih zvijezda su opaženi oko binarnih zvijezda na glavnom nizu te binarnih zvijezda u fazi nakon izbačaja zajedničke ovojnice. Nije jasno da li planeti u orbiti oko binarnih zvijezda na glavnom nizu mogu preživjeti fazu evolucije binarne zvijezde prije formacije zajedničke ovojnice. U ovom radu istražujemo evoluciju planeta oko binarnih zvijezda nakon što binarna zvijezda napusti glavni niz i prije nego što se formira zajednička ovojnica. Fokusiramo se na ulogu pomaka položaja gravitacijskih rezonancija čiji efekt može biti povećanje ekscentriciteta orbite planeta. Razvili smo Hamiltonian za modeliranje specifične rezonancije visokog reda 6 : 1 koji je primjenjiv na planete oko binarnih zvijezda sa usporedivim masama dviju komponenta zvijezde. Napravili smo numeričke simulacije takvih sustava koristeći kod za simulaciju gravitacijskih interakcija između N tijela povezan sa kodom za simulaciju stelarne evolucije binarne zvijezde. Rezultati pokazuju rezonancije u većini slučajeva imaju mali efekt, dominantne su sekularne interakcije. U većini slučajeva planeti prežive evoluciju binarne zvijezde prije početka faze zajedničke ovojnice.
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:194:728958
Study programmeTitle: physics
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra fizike (magistar/magistra fizike)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2017-10-26 07:58:12