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Dec7-03, 03:18 PM
P: 2
I could calculate the Roche Limit for Vega if I knew its density and the density of protoplanets in the circumstellar disk. I'm sure the density of Vega is less than the sun's density of 1.41, and I suspect the density of condensed material close to the star must be similar to iron or rocky asteroids, so around 3-5. Plugging in some guesstimates i get a Roche Limit of around 3 million kilometers, pretty close to the star. This would seem to strengthen my case. I suspect this distance is actually too close to the star's feeding zone, however, so no planet could form as it would be starved for material. Still this is a start. Thanks.