Fomalhaut's debris ring has a forced eccentricity that falls with semi-major axis as a^-1.75 +/- 0.16, the first reported eccentricity gradient in a debris disk.
Planetesimal/Debris discs
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abstract
This review chapter for young researchers presents our current understanding of debris discs. It introduces some of their basic properties and observables, and describes how we think they form and collisionally evolve. Special emphasis is dedicated to ALMA observations of the dust and gas, which constrains the distribution of planetesimals, their volatile composition, and potential volatile delivery to planetary atmospheres.
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ALMA Reveals an Eccentricity Gradient in the Fomalhaut Debris Disk
Fomalhaut's debris ring has a forced eccentricity that falls with semi-major axis as a^-1.75 +/- 0.16, the first reported eccentricity gradient in a debris disk.