Faint fuzzies are metal-rich apparently-old star clusters with unusually large radii ( 7-15 pc ) , found mostly in S0 galaxies , whose source remain obscure .
To identify their origins , we compare planetary nebulae and neutral hydrogen with faint fuzzy positions and line-of-sight velocities in NGC 1023 .
In this way , we rule out scenarios in which these objects are associated with an on-going merger or with a spheroid population in NGC 1023 .
Their kinematics are indistinguishable from the stellar disk population in this galaxy , and we conclude that faint fuzzies are most likely just remnant open clusters .
Their observed association with S0s then simply reflects the difficulty of identifying such objects in later-type disk galaxies .