Dust from short-period Comet P/Schwassmann-Wachmann 1 and replenishment of the interplanetary dust cloud

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Interplanetary Dust, Schwassmann-Wachmann Comet, Abundance, Carbon Dioxide, Charge Coupled Devices, Particle Size Distribution

Scientific paper

The numerical model of Fulle (1989) is used to analyze an optical image of the dust tail of Comet P/Schwassman-Wachmann 1, which contains information about grains 5 microns to 2 cm in diameter, ejected from 900 to 30 d before perihelion. During the three years covered by the model, the mass loss rate reached an estimated (6 +/- 3) x 10 exp 5 g/s, for an assumed albedo of 0.1 at the observation phase angle of 4 deg. This one short-period comet thus apparently provides about 6 percent of the mass required to balance the losses of the interplanetary dust cloud. The isophotes of the dust tail for the intensity levels 0.9, 1.5, 3.5, and 14.0, and the dust environment of Comet P/Schwassmann-Wachmann 1 are shown.

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