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Zoology and wildlife conservation

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Abstracts » Zoology and wildlife conservation

Mid-infrared images of beta Pictoris and the possible role of planetesimal collisions in the central disk

Article Abstract:

The thermal infrared images of the central disk that imply that the brightness asymmetry results from the presence of a bright clump composed of particles that may differ in size from dust elsewhere in the disk is presented. It has been suggested that this clump results from the collisional grinding of resonantly trapped planetesimals or the cataclysmic break-up of a planetesimal.

Author: Dermott, Stanley F., Telesco, Charles M., Fischer, R. Scott, Marinas, Naibi, Novotny, Steven, Wyatt, Mark C., Kehoe, Thomas J.J., Radomski, James T.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
Astronomical research, Astronomical collisions, Beta Pictoris (Star), Beta Pictoris

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Tidal effects of disconnected hydrocarbon seas on Titan

Article Abstract:

A study of the topography of Titan, Saturn's largest satellite, proposes that the massive liquid hydrocarbons in this satellite exist as several disconnected seas or as crater lakes. Boundary-layer disturbance gives way to tidal dissipation in the satellite's ocean. Oceanic tidal friction is minor and is not adequate to resolve the high orbital eccentricity of Titan.

Author: Sagan, Carl, Dermott, Stanley F.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
Titan (Satellite)

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How Mercury got its spin

Article Abstract:

Observations of planet Mercury has shown that its rotational period is only two-thirds of its orbital period(59 days compared to 88 days). The spin-orbit resonance of Mercury is analyzed.

Author: Dermott, Stanley F.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
Mercury (Planet)

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Subjects list: Research, United States
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