Question

Describe several ways in which elliptical galaxies and bulges are similar.

Answer 1

In astronomany, a bulge is a tightly packed group of stars within a large information.As,there are three types of bulges they are like ellipitical galaxies ,spiral galaxies and irregular galaxies.

The early discussion by Hubble to ellipiticals originated to the concept of bulges as scaled down ellipiticals.

Ellipitical galaxies have a bulge like central region and a halo,but donot have a disc.The bulge is round struture made primarily of old stars,gas and dust.

Ellipitical galaxies have a uniform lumunosity similar to the bulge

Ellipitical galaxies and bulges have the same origin.

Ellipitical galaxies and bulges satisfies the Sersic laws.

Ellipitical galaxies and bulges can be recovered from simulations that use cosmological self-consistent initial orbital parameters.