Abstract
We have studied the stability of location of various equilibrium points of a passive micron size particle in the field of radiating binary stellar system within the framework of circular restricted three body problem. Influence of radial radiation pressure and Poynting-Robertson drag (PR-drag) on the equilibrium points and their stability in the binary stellar systems RW-Monocerotis and Kruger-60 has been studied. It is shown that both collinear and off axis equilibrium points are linearly unstable for increasing value of β1 (ratio of radiation to gravitational force of the massive component) in presence of PR-drag for the binary systems. Further we find that out of plane equilibrium points (Li, i=6,7) may exists for range of values of β1>1 for these binary systems in the presence of PR-drag. Our linear stability analysis shows that the motion near the equilibrium points L6,7 of the binary systems is unstable both in the absence and presence of PR-drag.
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