... Caption: IC4406, the Retina nebula Hubble reveals a rainbow of colours in this dying star, called IC4406. ... Like many other so-called planetary nebulae, IC4406 exhibits a high degree of symmetry. ...
... For example, in the morphologically normal galaxies IC 1459 (Franx & Illingworth 1988) and NGC 5322 (Bender 1988; Rix & White ... to the structure inferred for, e.g., NGC 4261 (Davies & Birkinshaw 1986) and NGC 4406 (Franx, Illingworth, & Heckman 1989 ...