Astrophysics (Index)About

pseudobulge

(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 also be found within a classic bulge, as if the galaxy has both a classic bulge and pseudobulge overlaid. Pseudobulges also tend to show star formation whereas classic bulges are more likely to have little and consist of Population II stars.


(stars,galaxies,object type)
Further reading:
https://en.wikipedia.org/wiki/Galactic_bulge#Disk-like_bulges
https://ui.adsabs.harvard.edu/abs/2009MNRAS.393.1531G/abstract
https://ui.adsabs.harvard.edu/abs/2016ASSL..418...41F/abstract
http://ned.ipac.caltech.edu/level5/Sept14/Kormendy/Kormendy5.html
https://arxiv.org/abs/1208.2295

Referenced by pages:
bulge
galactic bulge

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