Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Antoniadou, Kyriaki I."'
Autor:
Antoniadou, Kyriaki I., Veras, Dimitri
Close to the Roche radius of a white dwarf (WD), an asteroid on a circular orbit sheds material that then adopts a very similar orbit. Observations of the resulting debris show a periodic behavior and changes in flux on short timescales, implying ong
Externí odkaz:
http://arxiv.org/abs/2409.03002
Publikováno v:
A&A 661, A62 (2022)
Space missions have discovered a large number of exoplanets evolving in (or close to) mean-motion resonances (MMRs) and resonant chains. Often, the published data exhibit very high uncertainties due to the observational limitations that introduce cha
Externí odkaz:
http://arxiv.org/abs/2203.03349
Previous works on the divergence of first-order mean-motion resonances (MMRs) have studied in detail the extent of the pericentric and apocentric libration zones of adjacent first-order MMRs, highlighting possible bridges between them in the low-ecce
Externí odkaz:
http://arxiv.org/abs/2107.10678
Publikováno v:
A&A 640, A55 (2020)
Many extrasolar systems possessing planets in mean-motion resonance or resonant chain have been discovered to date. The transit method coupled with transit timing variation analysis provides an insight into the physical and orbital parameters of the
Externí odkaz:
http://arxiv.org/abs/2006.12895
Autor:
Antoniadou, Kyriaki I., Veras, Dimitri
Publikováno v:
A&A 629, A126 (2019)
Planetary debris is observed in the atmospheres of over 1,000 white dwarfs, and two white dwarfs are now observed to contain orbiting minor planets. Exoasteroids and planetary core fragments achieve orbits close to the white dwarf through scattering
Externí odkaz:
http://arxiv.org/abs/1908.06108
We consider a planetary system consisting of two primaries, namely a star and a giant planet, and a massless secondary, say a terrestrial planet or an asteroid, which moves under their gravitational attraction. We study the dynamics of this system in
Externí odkaz:
http://arxiv.org/abs/1805.00288
The late-stage formation of giant planetary systems is rich in interesting dynamical mechanisms. Previous simulations of three giant planets initially on quasi-circular and quasi-coplanar orbits in the gas disc have shown that highly mutually incline
Externí odkaz:
http://arxiv.org/abs/1804.09591
Publikováno v:
A&A 615, A60 (2018)
Hundreds of giant planets have been discovered so far and the quest of exo-Earths in giant planet systems has become intriguing. In this work, we aim to address the question of the possible long-term coexistence of a terrestrial companion on an orbit
Externí odkaz:
http://arxiv.org/abs/1804.04936
Autor:
Antoniadou, Kyriaki I., Veras, Dimitri
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 463, Issue 4, p.4108-4120 (2016)
Mounting discoveries of debris discs orbiting newly-formed stars and white dwarfs (WDs) showcase the importance of modeling the long-term evolution of small bodies in exosystems. WD debris discs are in particular thought to form from very long-term (
Externí odkaz:
http://arxiv.org/abs/1609.01734
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 461, Issue 4, p. 3822-3834 (2016)
The long-term stability of the evolution of two-planet systems is considered by using the general three body problem (GTBP). Our study is focused on the stability of systems with adjacent orbits when at least one of them is highly eccentric. In these
Externí odkaz:
http://arxiv.org/abs/1606.07743