The Galactic Mergers and Gravitational Unbound Populations (2009)
Motivated by the observations on the intra-cluster light (ICL) and inter-galactic stellar populations, n-body simulations are used to model the galactic merging events as a goal to investigate the...
On the Period-Mass Functions of Extrasolar Planets (2009)
Yeh, Li-Chin, Chang, Yen-Chang, Hung, Wen-Liang, Jiang, Ing-Guey
Using the period and mass data of two hundred and seventy-nine extrasolar planets, we have constructed a coupled period-mass function through the non-parametric approach. This analytic expression of...
On Grain Dynamics in Debris Discs: Continuous Outward Flows and Embedded Planets (2009)
This study employed grain dynamic models to examine the density distribution of debris discs, and discussed the effects of the collisional time-intervals of asteroidal bodies, the maximum grain...
On the Vega Debris Disc's Dust Grains: Short-Lived or Long-Lived ? (2009)
Through Spitzer Space Telescope's observations, Su et al. (2005) show that the Vega debris disc is dominated by grains which are small enough to be blown out by radiation pressure. This implies the...
Jiang, Ing-Guey, Yeh, Li-Chin, Chang, Yen-Chang, Hung, Wen-Liang
Using the period and mass data of two hundred and seventy-nine extrasolar planets, we have constructed a coupled period-mass function through the non-parametric approach. This analytic expression of...
Effect of Central Mass Concentration on the Formation of Nuclear Spirals in Barred Galaxies (2008)
Thakur, Parijat, Ann, H. B., Jiang, Ing-Guey
We have performed smoothed particle hydrodynamics (SPH) simulations to study the response of the central kiloparsec region of a gaseous disk to the imposition of nonaxisymmetric bar potentials. The...
Self-consistent triaxial de Zeeuw-Carollo Models (2007)
Thakur, Parijat, Jiang, Ing-Guey, Das, Mousumi, Chakraborty, D. K., Ann, H. B.
We use the usual method of Schwarzschild to construct self-consistent solutions for the triaxial de Zeeuw & Carollo (1996) models with central density cusps. ZC96 models are triaxial generalisations...
On the Mass-Period Distributions and Correlations of Extrasolar Planets (2007)
Jiang, Ing-Guey, Yeh, Li-Chin, Chang, Yen-Chang, Hung, Wen-Liang
In addition to fitting the data of 233 extra-solar planets with power laws, we construct a correlated mass-period distribution function of extrasolar planets, as the first time in this field. The...
The Roles of Discs for Planetary Systems (2007)
It is known that the discs are detected for some of the extra-solar planetary systems. It is also likely that there was a disc mixing with planets and small bodies while our Solar System was forming....
On the Dynamics of Resonant Kuiper Belt Objects (2007)
We propose a new mechanism of drag-induced resonant capture, which can explain the resonant Kuiper Belt Objects in a natural way. A review and comparison with the traditional mechanism of sweeping...
The Modified Restricted Three Body Problems (2006)
The restricted three body problem is well-known and very important for dynamics of binary, multiple stars and also planetary systems. We extend the classical version of this problem to the situation...
The Possible Belts for Extrasolar Planetary Systems (2006)
Jiang, Ing-Guey, Duncan, M., Lin, D. N. C.
More than 100 extrasolar planets have been discovered since 1990s. Different from the solar system, these planets' orbital eccentricities cover a huge range from 0 to 0.7. Incidently, the first...
On the Formation of Brown Dwarfs (2006)
Jiang, Ing-Guey, Laughlin, G., Lin, D. N. C.
The observational properties of brown dwarfs pose challenges to the theory of star formation. Because their mass is much smaller than the typical Jeans mass of interstellar clouds, brown dwarfs are...
On the Chermnykh-Like Problems: II. The Equilibrium Points (2006)
Motivated by Papadakis (2005a, 2005b), we study a Chermnykh-like problem, in which an additional gravitational potential from the belt is included. In addition to the usual five equilibrium points...
On the Chermnykh-Like Problems: I. The Mass Parameter \mu=0.5 (2006)
Following Papadakis (2005)'s numerical exploration of the Chermnykh's problem, we here study a Chermnykh-like problem motivated by the astrophysical applications. We find that both the equilibrium...
Data Analysis on the Extra-solar Planets Using Robust Clustering (2006)
Jiang, Ing-Guey, Yeh, Li-Chin, Hung, Wen-Liang, Yang, Miin-Shen
We use both the conventional and more recently developed methods of cluster analysis to study the data of extra-solar planets. Using the data set with planetary mass M, orbital period P, and orbital...
We study the migration and resonant capture of planetesimals in a planetary system consisting of a gaseous disc analogous to the primordial solar nebula and a Neptune-like planet. Using a simple...
The Drag Induced Resonant Capture for Kuiper Belt Objects (2004)
It has been an interesting question that why there are one-third of Kuiper Belt Objects (KBOs) trapped into the 3:2 resonance but, in contrast, only several KBOs are claimed to be associated with the...
On the Chaotic Orbits of Disc-Star-Planet Systems (2004)
Following Tancredi, Sanchez and Roig (2001)'s criteria of chaos, two ways of setting initial velocities are used in the numerical surveys to explore the possible chaotic and regular orbits for the...
On the Formation of Brown Dwarfs (2003)
Jiang, Ing-Guey, Laughlin, G., Lin, D. N. C.
The observational properties of brown dwarfs pose challenges to the theory of star formation. Because their mass is much smaller than the typical Jeans mass of interstellar clouds, brown dwarfs are...
Dynamical Effects from Asteroid Belts for Planetary Systems (2003)
The orbital evolution and stability of planetary systems with interaction from the belts is studied using the standard phase-plane analysis. In addition to the fixed point which corresponds to the...
On the Fate of Close-in Extrasolar Planets (2002)
Jiang, Ing-Guey, Ip, Wing-Huen, Yeh, Li-Chin
It has been shown that there is a possible mass-period correlation for extrasolar planets from the current observational data and this correlation is, in fact, related to the absence of massive...
High Velocity Clouds and the Local Group (2002)
Huang, Kui-Yun, Jiang, Ing-Guey
It was proposed by Blitz et al. (1999) that High Velocity Clouds (HVCs) are remnants of Local Group formation and the average distance of HVCs is 1 Mpc, which is the result of a simple dynamical...
Bifurcation for Dynamical Systems of Planet-Belt Interaction (2002)
The dynamical systems of planet-belt interaction are studied by the fixed-point analysis and the bifurcation of solutions on the parameter space is discussed. For most cases, our analytical and...
Orbital Evolution of Scattered Planets (2001)
A simple dynamical model is employed to study the possible orbital evolution of scattered planets and phase plane analysis is used to classify the parameter space and solutions. Our results reconfirm...
The Size Distribution of the Kuiper Belt Objects (2000)
Chen, Cheng-Pin, Jiang, Ing-Guey
The size distribution is determined directly from the current known Kuiper Belt Objects (KBOs). We found that there is a peak for the size distribution around 230 km in diameter. For the objects...
The Planetary System of Upsilon Andromedae (2000)
Jiang, Ing-Guey, Ip, Wing-Huen
The bright F8 V solar-type star upsilon Andromedae has recently been reported to have a system of three planets of Jovian masses. In order to investigate the orbital stability and mutual...
The Orbit and Mass of the Sagittarius Dwarf Galaxy (1999)
Jiang, Ing-Guey, Binney, James
Possible orbital histories of the Sgr dwarf galaxy are explored. A special-purpose N-body code is used to construct the first models of the Milky Way - Sgr Dwarf system in which both the Milky Way...
The implications of a live halo for galactic warps and satellite dynamics / (1999)
Work carried out in the Department of Physics.
Warps and Cosmic Infall (1998)
Jiang, Ing-Guey, Binney, James
N-body simulations show that when infall reorientates the outer parts of a galactic halo by several degrees per Gyr, a self-gravitating disk that is embedded in the halo develops an integral-sign...
The Persistence of Warps in Spiral Galaxies with Massive Halos (1997)
Binney, James, Jiang, Ing-Guey, Dutta, Suvendra
We study the persistence of warps in galactic discs in the presence of massive halos. A disc is approximated by a set of massive rings, while a halo is represented by a conventional n-body...