Main belt binary asteroidal systems with eccentric mutual orbits

Tidal evolution of eccentric orbits in massive binary systems

We study the tidal evolution of a binary system consisting of a 1.4M⊙ compact object in elliptic orbit about a 10M⊙ uniformly rotating main sequence (MS) star for various values of the initial orbital parameters. We apply our previously published results of 2D non-adiabatic calculations of the non-radial gand r-mode oscillations of the uniformly rotating MS star, and include the effects of reso...

Tidal evolution of eccentric orbits in massive binary systems A study of resonance locking

We study the tidal evolution of a binary system consisting of a 1.4M compact object in elliptic orbit about a 10M uniformly rotating main sequence (MS) star for various values of the initial orbital parameters. We apply our previously published results of 2D non-adiabatic calculations of the nonradial gand r-mode oscillations of the uniformly rotating MS star, and include the effects of resonan...

Electromagnetic Formation Flying with Eccentric Reference Orbits

Fuzzy Sliding Mode for Spacecraft Formation Control in Eccentric Orbits

The problem of relative motion control for spacecraft formation flying in eccentric orbits is considered in this paper. Due to the presence of nonlinear dynamics and external disturbances, a robust fuzzy sliding mode controller is developed. The slopes of sliding surfaces of the conventional sliding mode controller are tuned according to error states using a fuzzy logic and reach the pre-define...

Debris disks in main sequence binary systems

We observed 69 A3-F8 main sequence binary star systems using the Multiband Imaging Photometer for Spitzer onboard the Spitzer Space Telescope. We find emission significantly in excess of predicted photospheric flux levels for 9 −3% and 40 −6% of these systems at 24 and 70 μm, respectively. Twenty two systems total have excess emission, including four systems that show excess emission at both wa...