Naslov
Planets orbiting evolving binary stars

Autori
Bartolić, Fran

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, diplomski rad, diplomski

Fakultet
Odjel za fiziku

Mjesto
Rijeka

Datum
19.09

Godina
2017

Stranica
93

Mentor
Dominis Prester, Dijana

Ključne riječi
extrasolar planets: circumbinary - star formation - planet formation

Sažetak
Circumbinary planets have been observed around both main sequence and post common envelope binary stars. It is not clear if a circumbi nary system on the main sequence can survive the post main se- quence evolution leading to the post common envelope systems. In this work we investigate the evolution of circumbianry planets after the binary leaves the main sequence and prior to the onset of the 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 significant. 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. Our results show that the resonances have a small effect in most cases with the effect of secular decrease in eccentricity dominanting. In most cases the planets survive the evolution prior to the common envelope.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA