Resolved debris disc emission around η Telescopii: a young solar system or ongoing planet formation?

@article{Smith2009ResolvedDD,
  title={Resolved debris disc emission around $\eta$ Telescopii: a young solar system or ongoing planet formation?},
  author={R. J. Smith and Laura Churcher and Mark C. Wyatt and Margaret Moerchen and Charles M. Telesco},
  journal={Astronomy and Astrophysics},
  year={2009},
  volume={493},
  pages={299-308}
}
Aims. 60% of the A star members of the 12 Myr oldβ Pictoris moving group (BPMG) show significant excess emissi on in the mid-infrared, several million years after the proto-plane tary disk is thought to disperse. Theoretical models suggest this peak may coincide with the formation of Pluto-sized planetesimals in the disk, stirring smaller bodies into collisional destru ction. Here we present resolved mid-infrared imaging of the disk ofη Tel (A0V in the BPMG) and consider its implications for… 

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