ultra-diffuse

Alternative forms

 * ultra diffuse

Adjective

 * 1) Extremely diffuse.
 * 2)  Specifically, designating a type of galaxy with a very low proportion of visible stars compared to the Milky Way, and hence a very low luminosity.
 * 3) * 2016, Van der Burg, Muzzin & Hoekstra, ‘The abundance and spatial distribution of ultra-diffuse galaxies in nearby galaxy clusters’, Astronomy & Astrophysics:
 * In the next sections we study the properties of galaxies that satisfy our criteria to be ultra diffuse, and consider the contribution from galaxies in the fore- and background using the CFHTLS fields.

Derived terms

 * ultra diffuse galaxy