A Zijlstra

Albert Ziljstra 

Univeristy of Manchester

Evolving disks around post-AGB stars

 A surprising discovery in recent years has been that many post-AGB stars are surrounded by stable disks. The disks are seen in dust emission, with an inner edge at the sublimation temperature. Surface abundances of the  stars shows evidence for accretion from the dust disks. Some central stars  of planetary nebulae also show dust disks although they appear to be less common than among the (less evolved) post-AGB stars. Several disks have  been resolved with the VLTI. In this talk I will review these post-AGB disks: observational properties, evidence for evolution, and origin. I will also discuss their relation with the debris disks detected around their progeny, the white dwarfs.

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