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A lenticular galaxy (denoted S0) is a type of galaxy intermediate between an elliptical (denoted E) and a spiral galaxy in galaxy morphological classification schemes. It contains a large-scale disc but does not have large-scale spiral arms.
Jan 30, 2023 · When two galaxies of nearly the same shape collide, it is called a major merger event, and it can be one of the ways to form a lenticular galaxy which leads to a gas-rich galaxy.
Often referred to as armless spirals, or armless disks, lenticular galaxies define the forking point in the Hubble galaxy classification scheme, marking the transition from elliptical to spiral galaxies.
When viewed edge-on, lenticular galaxies (alternatively called S0 galaxies) have a shape reminiscent of a lens (hence the alternative name). Located at the fork in the Hubble classification diagram and labelled S0 or SB0, they have a structure that appears intermediate between elliptical galaxies and spiral galaxies.
Jan 10, 2020 · Lenticular Galaxies Are the Quiet, Dusty Stellar Cities of the Cosmos. NASA/ESA/STScI. By. John P. Millis, Ph.D. Updated on January 10, 2020. There are many types of galaxies out there in the universe. Astronomers tend to classify them first by their shapes: spiral, elliptical, lenticular, and irregular.
Galaxies at this extreme may have no clear spiral arm structure, resulting in a lens-like appearance (they are sometimes referred to as lenticular galaxies). These galaxies seem to share as many properties with elliptical galaxies as they do with spiral galaxies
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.
