Frequency of debris discs around white dwarfs

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Frequency of debris discs around white dwarfs

Post by Lazarus on 18th September 2012, 3:53 pm

The Frequency of Debris Disks at White Dwarfs

Metallicity-unbiased survey of cool, hydrogen-atmosphere white dwarfs. The inferred debris disc frequency is 4.3+2.7-1.2%, which they interpret either as a lower limit on the frequency of planetary systems around the progenitor stars (progenitor masses 17 M) or alternatively the fraction of the white dwarf lifetime where the white dwarf undergoes accretion, assuming a 100% frequency for planetary systems.
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