Astrophysics (Index)About


(like a galaxy bulge only flatter)

A pseudobulge is a like a galaxy bulge only flatter, more disk-like. (When discussing both, sometimes an "ordinary" bulge is referred to as a classic bulge.) Pseudobulges tend to have some structure rather than being just being a lump of stars, sometimes showing a spiral like a miniature spiral galaxy. Such a structure may be found within a classic bulge as if the galaxy has both, overlaid. Pseudobulges also tend to show star formation whereas classic bulges are more likely to have little and comprise Population II stars.

(stars,galaxies,object type)
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Referenced by pages:
galactic bulge