103 citations · 315 across the 11 of their papers we have counts for
11 papers
The complex kinematics of the young stars orbiting the supermassive black hole in the Galactic center can be explained by the presence of an intermediate mass companion of Sgr A
Xiaochen Zheng, Long Wang, Douglas N. C. Lin +2
The sub-parsec proximity around the Sgr A supermassive black hole (SMBH) in the center of the Milky Way contains an inner cluster of eccentric S-stars with randomly oriente…
A Robust Launching Mechanism for Freely-Floating Planets from Host Stars with Close-in Planets
Xiaochen Zheng, Zhuoya Cao, Shigeru Ida +2
Secular perturbations from binary stars and distant massive planets can drive cold planets onto nearly parabolic orbits with pericenter passages extremely close to their host stars…
The Orbital Structure and Selection Effects of the Galactic Center S-Star Cluster
Andreas Burkert, Stefan Gillessen, Douglas N. C. Lin +4
The orbital distribution of the S-star cluster surrounding the supermassive black hole in the center of the Milky Way is analyzed. A tight, roughly exponential dependence of the pe…
The influence of the secular perturbation of an intermediate-mass companion: II. Ejection of hypervelocity stars from the Galactic Center
Xiaochen Zheng, Douglas N. C. Lin, Shude Mao
There is a population of stars with velocities in excess of 500 km s relative to the Galactic center. Many, perhaps most, of these hyper-velocity stars (HVSs) are B stars, s…
Departure from the Exact Location of Mean Motion Resonances Induced by the Gas Disk in the Systems Observed by Kepler
Su Wang, D. N. C. Lin, Xiaochen Zheng +1
The statistical results of transiting planets show that there are two peaks around 1.5 and 2.0 in the distribution of orbital period ratios. A large number of planet pairs are foun…
The influence of the secular perturbation of an intermediate-mass companion: I. Eccentricity excitation of disk stars at the Galactic center
Xiaochen Zheng, Douglas N. C. Lin, Shude Mao
There is a dense group of OB and Wolf-Rayet stars within a fraction of a parsec from the super-massive black hole (SMBH) at the Galactic Center. These stars appear to be coeval and…
The Formation of Jupiter's Diluted Core by a Giant Impact
Shang-Fei Liu, Yasunori Hori, Simon Müller +4
The Juno mission has provided an accurate determination of Jupiter's gravitational field, which has been used to obtain information about the planet's composition and internal stru…
Clearing residual planetesimals by sweeping secular resonances in transitional disks: a lone-planet scenario for the wide gaps in debris disks around Vega and Fomalhaut
Xiaochen Zheng, Douglas N. C. Lin, M. B. N. Kouwenhoven +2
Extended gaps in the debris disks of both Vega and Fomalhaut have been observed. These structures have been attributed to tidal perturbations by multiple super-Jupiter gas giant pl…
Planetesimal clearing and size-dependent asteroid retention by secular resonance sweeping during the depletion of the solar nebula
Xiaochen Zheng, Douglas N. C. Lin, M. B. N. Kouwenhoven
The distribution of heavy elements is anomalously low in the asteroid main belt region compared with elsewhere in the solar system. Observational surveys also indicate a deficit in…
The dynamical fate of planetary systems in young star clusters
Xiaochen Zheng, M. B. N. Kouwenhoven, Long Wang
We carry out N-body simulations to examine the effects of dynamical interactions on planetary systems in young open star clusters. We explore how the planetary populations in these…
Close encounters involving free-floating planets in star clusters
Long Wang, M. B. N. Kouwenhoven, Xiaochen Zheng +2
Instabilities in planetary systems can result in the ejection of planets from their host system, resulting in free-floating planets (FFPs). If this occurs in a star cluster, the FF…