Lenticular Galaxies
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NGC 936, an SB0
galaxy from the SDSS |
Lenticular galaxies are sometimes called "armless spiral galaxies."
Lenticular galaxies have a central bulge, but no spiral arms. If the
central bulge is not very bright, it can
be very difficult to tell the difference between a lenticular galaxy and
an E0 galaxy.
Just like spiral galaxies, some lenticular galaxies have a bar.
They are called "barred lenticular galaxies" and are denoted SB0.
Normal lenticular galaxies are denoted S0.
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