Lenticular galaxy

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image of lenticular galaxy
An unusual lenticular galaxy containing dust lanes

A Lenticular galaxy is a type of galaxy that is often considered to be an intermediate between spiral galaxies and elliptical galaxies.[1] They are situated at the intersection of the Hubble tuning fork diagram, and labelled "SB0" or "S0" depending on whether the contain a bar or not.

They often have a mixture of features seen in spiral and elliptical galaxies; for example they often have a bulge and disk like structure like spiral galaxies but have no spiral arms or dust like an elliptical.[2] They are called lenticular galaxies as they look like lenses when viewed edge on.

References

  1. Lenticular galaxy from astronomy.swin.edu.au
  2. Galaxy types from astro.cornell.edu