Ageing dust fades away
Article Abstract:
Infrared observations of dust around stars of different ages indicates that this dust disappears between 300 million and 400 million years following the birth of the stars. It was found that around 60% of stars younger than 400 million years have dust disks, while only around 9% of those older than that have dust disks. This work can be extended to quantify the volume of dust in many systems and to establish how this volume declines with age.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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A massive cool dust torus around eta Carinae?
Article Abstract:
The view that a massive but extremely compact torus of gas encircles the star eta Carinae, and that this caused the bipolar shape by stopping gas ejected by the star expanding in the equatorial plane, is discussed. The small size of the torus is not sufficient to produce the observed infrared flux that inspired this view.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
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Io as a source of the jovian dust storms
Article Abstract:
Streams of dust discovered by the Ulysses spacecraft emerging from Jupiter seem to have originated on Io. The latest findings are based on periodicities in the dust impact signal.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
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