An Observational Guide to Identifying Pseudobulges and Classical Bulges
  in Disk Galaxies
  In this review our aim is to summarize the observed properties of
pseudobulges and classical bulges. We utilize an empirical approach to studying
the properties of bulges in disk galaxies, and restrict our analysis to
statistical proper- ties. A clear bimodality is observed in a number of
properties including morphology, structural properties, star formation, gas
content & stellar population, and kinematics. As well as summarizing known
methods to identify pseudobulges and classical bulges we also show new results,
including absorption line indices that can be used to identify different bulge
types. We conclude by summarizing those properties that isolate pseudobulges
from classical bulges. Our intention is to describe a practical, easy to use,
list of criteria for identifying bulge types.
