The orbital evolution of exoplanets in direct-imaged multiple planetary systems
It is exciting that with small angular separation
and extreme intensity contrast between the exoplanet
and its host star, many extra-solar planetary systems
have been detected by the direct-imaging method.
However, the values of planetary mass are far more uncertain
than those detected through the transit and Doppler-effect methods.
We study the orbital evolution of several direct-imaged
multiple planetary systems. The possible ranges of planetary mass
would be investigated through the stability of these systems.