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

Article Abstract:

The short-period comet P/Schwassmann-Wachmann 1 (SW1) contributes about 6% of the matter needed to make up the interplanetary dust cloud's observed losses. A source of matter must exist for the dust cloud to account for why it does not diminish in size despite being depleted of mass by dissipative processes. A numerical model devised to analyze optical images found that SW1 is probably one source of matter for the dust cloud.

Cosmic dust

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Detection of acetylene in the infrared spectrum of comet Hyakutake

Article Abstract:

An infrared spectrum analysis of the volatile material content of Comet Hyakutake shows an abundance of acetylene. The estimated abundance of acetylene is about 0.2-0.9% relative to water and is comparable to the abundance estimated in the solid-phase of cold interstellar clouds. The findings suggest that the volatile materials of the comet may have originated from the ice-covered interstellar grains.

Research, Analysis, Hyakutake (Comet), Hyakutake comet, Acetylene, Interstellar matter, Interstellar medium

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Compositional homogeneity in the fragmented comet 73P/Schwassmann- Wachmann 3

Article Abstract:

The chemical composition of two distinct fragments of 73P/Schwassmann- Wachmann 3which are remarkably similar in composition in contrast to the chemical diversity within comet population is reported.

Composition, Astronomical research

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