48 citations · 202 across the 16 of their papers we have counts for
17 papers
On the formation of retrograde S-type planets in binaries with a polar circumbinary disk
Cheng Chen, Philip J. Armitage, C. J. Nixon +2
Retrograde S-type planets have been observed in several binary systems, yet their formation pathway remains poorly understood. With high-resolution hydrodynamic simulations, we dem…
The Arc in the DX Cha Circumbinary System: Evidence For a Retrograde Circumbinary Disk
Cheng Chen, Daniela Paz Iglesias, James M. Miley +1
Observations of the binary system DX Cha (HD 104237) reveal a compact, asymmetric ring structure with a radius of 0.43\,au. This ring is just outside the binary orbit, which has se…
On the orbital evolution of binaries with polar circumbinary disks
Cheng Chen, Philip J. Armitage, C. J. Nixon
Binaries occur in many astrophysical systems, from young protostellar binaries in star forming regions to supermassive black hole binaries in galaxy centers. In many cases, a circu…
Minimising the numerical viscosity in Smoothed Particle Hydrodynamics simulations of discs
Cheng Chen, C. J. Nixon
Simulations using the Smoothed Particle Hydrodynamics (SPH) technique typically include numerical viscosity to model shocks and maintain particle order on the kernel scale. This nu…
On the origin of polar planets around single stars
Cheng Chen, Stanley A. Baronett, C. J. Nixon +1
The Rossiter-McLaughlin effect measures the misalignment between a planet's orbital plane and its host star's rotation plane. Around 10 of planets exhibit misalignments in the…
Tilted circumbinary planetary systems as efficient progenitors of free-floating planets
Cheng Chen, Rebecca G. Martin, Stephen H. Lubow +1
The dominant mechanism for generating free-floating planets has so far remained elusive. One suggested mechanism is that planets are ejected from planetary systems due to planet-pl…
Can a binary star host three giant circumbinary planets?
Cheng Chen, Rebecca G. Martin, C. J. Nixon
We investigate the orbital stability of a tilted circumbinary planetary system with three giant planets. The planets are spaced by a constant number () of mutual Hill radii in t…
Orbital stability of two circumbinary planets around misaligned eccentric binaries
Cheng Chen, Stephen H. Lubow, Rebecca G. Martin +1
With -body simulations we investigate the stability of tilted circumbinary planetary systems consisting of two nonzero mass planets. The planets are initially in circular orbits…
Polar alignment of a massive retrograde circumbinary disc around an eccentric binary
Charles P. Abod, Cheng Chen, Jeremy Smallwood +3
A test particle orbit around an eccentric binary has two stationary states in which there is no nodal precession: coplanar and polar. Nodal precession of a misaligned test particle…
Orbital dynamics of two circumbinary planets around misaligned eccentric binaries
Cheng Chen, Stephen H. Lubow, Rebecca G. Martin
We investigate the orbital dynamics of circumbinary planetary systems with two planets around a circular or eccentric orbit binary. The orbits of the two planet are initially circu…
GW Ori: circumtriple rings and planets
Jeremy L. Smallwood, Rebecca Nealon, Cheng Chen +4
GW Ori is a hierarchical triple star system with a misaligned circumtriple protoplanetary disc. Recent ALMA observations have identified three dust rings with a prominent gap at $1…
The evolution of a circumplanetary disc with a dead zone
Cheng Chen, Chao-Chin Yang, Rebecca G. Martin +1
We investigate whether the regular Galilean satellites could have formed in the dead zone of a circumplanetary disc. A dead zone is a region of weak turbulence in which the magneto…
Polar planets around highly eccentric binaries are the most stable
Cheng Chen, Stephen H. Lubow, Rebecca G. Martin
We study the orbital stability of a non-zero mass, close-in circular orbit planet around an eccentric orbit binary for various initial values of the binary eccentricity, binary mas…
Formation of the polar debris disc around 99 Herculis
Jeremy L. Smallwood, Alessia Franchini, Cheng Chen +4
We investigate the formation mechanism for the observed nearly polar aligned (perpendicular to the binary orbital plane) debris ring around the eccentric orbit binary 99 Herculis.…
Asteroid belt survival through stellar evolution: dependence on the stellar mass
Rebecca G. Martin, Mario Livio, Jeremy L. Smallwood +1
Polluted white dwarfs are generally accreting terrestrial-like material that may originate from a debris belt like the asteroid belt in the solar system. The fraction of white dwar…
Orbital dynamics of circumbinary planets
Cheng Chen, Alessia Franchini, Stephen H. Lubow +1
We investigate the dynamics of a nonzero mass, circular orbit planet around an eccentric orbit binary for various values of the binary eccentricity, binary mass fraction, planet ma…
Late Delivery of Nitrogen to Earth
Cheng Chen, Jeremy L. Smallwood, Rebecca G. Martin +1
Atmospheric nitrogen may be a necessary ingredient for the habitability of a planet since its presence helps to prevent water loss from a planet. The present day nitrogen isotopic…