What do lenticular galaxies lack?

The lenticular are galaxies whose stars are distributed in the form of a disk and a central spheroid, like spiral galaxies, but they do not have spiral arms. Besides, they are “clean”, like elliptical galaxies, that is, they lack interstellar gas and dust, but unlike those, they do not show a global spheroidal shape.

What type of galaxy is a large disk which often contains interstellar matter throughout it?

Spiral Galaxies. Our own Galaxy and the Andromeda galaxy are typical, large spiral galaxies. They consist of a central bulge, a halo, a disk, and spiral arms. Interstellar material is usually spread throughout the disks of spiral galaxies.

Which types of galaxies have a clearly defined disk component?

Lenticular galaxies are like a cross between spirals and ellipticals and are also disc-shaped. Ellipticals are like big eggs or spheres, and irregular galaxies are unclear blobs.

What is a lenticular galaxy space com?

A galaxy having a central bulge surrounded by a flattened disk with no pattern of spiral arms. Like spiral galaxies, they are disk-shaped with a central bulge, but like elliptical galaxies they contain relatively little gas and dust.

Do lenticular galaxies have dark matter?

3.2 Lenticular Galaxies Like ellipticals, SO galaxies present problems in the detection of a dark matter halo. The general conclusion is that these galaxies also have dark matter halos, but that they may be relatively smaller, as these galaxies are bright.

How does a lenticular galaxy look?

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.

What is a lenticular galaxy quizlet?

-Lenticular Galaxy. -unlike spiral galaxies, the disks of lenticular galaxies have no visible spiral structure and are not actively forming stars in any significant quantity. -S0. -Irregular Galaxies. a galaxy that does not have a distinct regular shape.

What is a lenticular S0 galaxy quizlet?

What is a lenticular (or S0) galaxy? galaxy with a central bulge and a disk like a spiral galaxy, but with no spiral arms.

How does a lenticular galaxy differ from a spiral galaxy quizlet?

How does a lenticular galaxy differ from a normal spiral galaxy? It has no spiral arms. What is the major difference between an elliptical galaxy and a spiral galaxy? An elliptical galaxy lacks a disk component.

How does a lenticular galaxy differ from a spiral galaxy?

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.

How is a lenticular galaxy formed?

So, as an alternative, some astronomers now suggest that lenticular galaxies are the result of mergers between two old, spiral galaxies. This would explain the disk structure and the lack of free gas. Also, with the combined mass of two galaxies, the higher surface brightness would be explained.

How do lenticular galaxies form?