KuvausArtist’s impression of debris around a white dwarf star.jpg
English: This is an artist’s impression of a white dwarf (burned-out) star accreting rocky debris left behind by the star’s surviving planetary system. It was observed by Hubble in the Hyades star cluster. At lower right, an asteroid can be seen falling toward a Saturn-like disk of dust that is encircling the dead star. Infalling asteroids pollute the white dwarf’s atmosphere with silicon.
These dead stars are located 150 light-years from Earth in a relatively young star cluster, Hyades, in the constellation Taurus. The star cluster is only 625 million years old. The white dwarfs are being polluted by asteroid-like debris falling onto them.
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Kuvan nimi
This illustration is an artist's impression of the thin, rocky debris disc discovered around the two Hyades white dwarfs. Rocky asteroids are thought to have been perturbed by planets within the system and diverted inwards towards the star, where they broke up, circled into a debris ring, and were then dragged onto the star itself.
Verkossa oleva tekijänoikeustieto
Tekijä/toimittaja
NASA, ESA, STScI, and G. Bacon (STScI)
Lähde
ESA/Hubble
Käyttöehdot
Creative Commons Attribution 3.0 Unported license
Lyhyt otsikko
Artist’s impression of debris around a white dwarf star