4
HR 4796: age ~ 10 Myrs
•
A0 star ( 2 M
¤
) at 67 pc
•
dust ring width ~ 17 AU,
radius 70 AU
•
collisionally-produced debris?
Keck mid-IR
Koerner et al 1998
HST NICMOS
Schneider et al 1999
model
