«This discovery implies hundreds of
faint dwarf satellites waiting to be discovered in the halo of the Milky Way,» he said.
It enables an efficient search for very
faint dwarf satellites over large areas of the sky.
The faintest dwarf satellites identified so far was Segue I, discovered by SDSS -LRB--1.5 mag) and Cetus II in DES (0.0 mag).
Not exact matches
Dwarf satellite galaxies are so
faint that it takes an extremely sensitive instrument like the Dark Energy Camera to find them.
Y
dwarfs are too
faint to be detected by visible - light telescopes, but NASA's Wide - field Infrared Survey Explorer (WISE)
satellite, which can sense infrared heat, picked them up easily.
The discovery of numerous
faint dwarf galaxies in Fornax suggests that the «missing
satellites» are now being found.