57 citations · 363 across the 25 of their papers we have counts for
27 papers
How dust particles orbiting white dwarfs can reveal undetected co-orbiting exoplanets II. Exoplanets on elliptic orbits
Kyriaki I. Antoniadou, Dimitri Veras
Abridged. We aim to extend Paper I to the eccentric secondary orbit case and now analyse the elliptic restricted three-body problem (ERTBP). Our secondary masses include Ceres, Mer…
How dust particles orbiting white dwarfs can reveal undetected co-orbiting exoplanets I. Exoplanet on a circular orbit
Kyriaki I. Antoniadou, Dimitri Veras
Abridged. Mounting observations of transiting dusty debris orbiting WDs display complex signatures that often feature orbital period drifts. The asteroid or planet progenitor of th…
Disruption of exo-asteroids around white dwarfs and the release of dust particles in debris rings in co-orbital motion
Kyriaki I. Antoniadou, Dimitri Veras
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 p…
Periodic orbits in the 1:2:3 resonant chain and their impact on the orbital dynamics of the Kepler-51 planetary system
Kyriaki I. Antoniadou, George Voyatzis
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…
Bridges and gaps at low-eccentricity first-order resonances
Kyriaki I. Antoniadou, Anne-Sophie Libert
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-…
Exploiting periodic orbits as dynamical clues for Kepler and K2 systems
Kyriaki I. Antoniadou, Anne-Sophie Libert
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 analysi…
Driving white dwarf metal pollution through unstable eccentric periodic orbits
Kyriaki I. Antoniadou, Dimitri Veras
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…
Spatial resonant periodic orbits in the restricted three-body problem
K. I. Antoniadou, A. -S. Libert
The quest of exo-Earths has become a prominent field. In this work, we study the stability of non-coplanar planetary configurations consisting of an inclined inner terrestrial plan…
On quasi-satellite periodic motion in asteroid and planetary dynamics
G. Voyatzis, K. I. Antoniadou
Applying the method of analytical continuation of periodic orbits, we study quasi-satellite motion in the framework of the three-body problem. In the simplest, yet not trivial mode…
Origin and continuation of 3/2, 5/2, 3/1, 4/1 and 5/1 resonant periodic orbits in the circular and elliptic restricted three-body problem
Kyriaki I. Antoniadou, Anne-Sophie Libert
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 t…
Puzzling out the coexistence of terrestrial planets and giant exoplanets. The 2/1 resonant periodic orbits
Kyriaki I. Antoniadou, Anne-Sophie Libert
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…
Influence of periodic orbits on the formation of giant planetary systems
Anne-Sophie Libert, Sotiris Sotiriadis, Kyriaki I. Antoniadou
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-c…
Inclined asymmetric librations in exterior resonances
G. Voyatzis, K. Tsiganis, K. I. Antoniadou
Librational motion in celestial mechanics is generally associated with the existence of stable resonant configurations and signified by the existence of stable periodic solutions a…
Circular periodic orbits, resonance capture and inclination excitation during type II migration
K. I. Antoniadou, G. Voyatzis
We consider planetary systems evolving under the effect of a Stokes-type dissipative force mimicking the outcome of a type II migration process. As inward migration proceeds and th…
Linking long-term planetary -body simulations with periodic orbits: application to white dwarf pollution
Kyriaki I. Antoniadou, Dimitri Veras
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. W…
Orbital stability of coplanar two-planet exosystems with high eccentricities
Kyriaki I. Antoniadou, George Voyatzis
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 a…
Long-term orbital stability of exosolar planetary systems with highly eccentric orbits
Kyriaki I. Antoniadou, George Voyatzis
Nowadays, many extrasolar planetary systems possessing at least one planet on a highly eccentric orbit have been discovered. In this work, we study the possible long-term stability…
Regular and chaotic orbits in the dynamics of exoplanets
Kyriaki I. Antoniadou
Many of exoplanetary systems consist of more than one planet and the study of planetary orbits with respect to their long-term stability is very interesting. Furthermore, many exop…
Highly eccentric exoplanets trapped in mean-motion resonances
K. I. Antoniadou, G. Voyatzis
We herein utilize the general three-body problem (GTBP) as a model, in order to simulate resonant systems consisting of a star and two planets, where at least one of them is highly…
1/1 resonant periodic orbits in three dimensional planetary systems
Kyriaki I. Antoniadou, George Voyatzis, Harry Varvoglis
We study the dynamics of a two-planet system, which evolves being in a mean motion resonance (co-orbital motion) with non-zero mutual inclination. In particular, we examine t…
Continuation and stability deduction of resonant periodic orbits in three dimensional systems
Kyriaki I. Antoniadou, George Voyatzis, Harry Varvoglis
In dynamical systems of few degrees of freedom, periodic solutions consist the backbone of the phase space and the determination and computation of their stability is crucial for u…
Vertical instability and inclination excitation during planetary migration
G. Voyatzis, K. I. Antoniadou, K. Tsiganis
We consider a two-planet system, which migrates under the influence of dissipative forces that mimic the effects of gas-driven (Type II) migration. It has been shown that, in the p…
On the dynamics of the three dimensional planetary systems
Kyriaki I. Antoniadou, George Voyatzis, John D. Hadjidemetriou
Over the last decades, there has been a tremendous increase in research on extrasolar planets. Many exosolar systems, which consist of a Star and two inclined Planets, seem to be l…
Resonant periodic orbits in the exoplanetary systems
K. I. Antoniadou, G. Voyatzis
The planetary dynamics of , , , and mean motion resonances is studied by using the model of the general three body problem in a rotating frame and by det…