72 citations · 302 across the 7 of their papers we have counts for
7 papers
High Inclination Planets in Multistellar Systems
P. E. Verrier, N. W. Evans
The Kozai mechanism often destabilises high inclination orbits. It couples changes in the eccentricity and inclination, and drives high inclination, circular orbits to low inclinat…
Superintegrability of the Caged Anisotropic Oscillator
N. W. Evans, P. E. Verrier
We study "the Caged Anisotropic Harmonic Oscillator", which is a new example of a superintegrable, or accidentally degenerate Hamiltonian. The potential is that of the harmonic osc…
HD 98800: A most unusual debris disc
P. E. Verrier, N. W. Evans
The dynamics of planetesimals in the circumbinary debris disc of the quadruple star system HD 98800 are investigated. Evolving a spherical shell of test particles from a million ye…
A New Superintegrable Hamiltonian
P. E. Verrier, N. W. Evans
We identify a new superintegrable Hamiltonian in 3 degrees of freedom, obtained as a reduction of pure Keplerian motion in 6 dimensions. The new Hamiltonian is a generalization of…
Planetary Stability Zones in Hierarchical Triple Star Systems
P. E. Verrier, N. W. Evans
A symplectic integrator algorithm suitable for hierarchical triple systems is formulated and tested. The positions of the stars are followed in hierarchical Jacobi coordinates, whi…
The Monitor project: JW 380 -- a 0.26, 0.15 Msol pre main sequence eclipsing binary in the Orion Nebula Cluster
Jonathan Irwin, Suzanne Aigrain, Simon Hodgkin +14
We report the discovery of a low-mass (0.26 +/- 0.02, 0.15 +/- 0.01 Msol) pre-main-sequence eclipsing binary with a 5.3 day orbital period. JW 380 was detected as part of a high-ca…