The galaxy color–magnitude diagram shows the relationship between absolute magnitude and mass of galaxies. A preliminary description of the three areas of this diagram was made in 2003 by Eric F. Bell
One of five patches of sky covered by the COMBO-17 survey.
Elliptical galaxy
Videos
An elliptical galaxy is a type of galaxy with an approximately ellipsoidal shape and a smooth, nearly featureless image. They are one of the three main classes of galaxy described by Edwin Hubble in h
Galaxy color–magnitude diagram
…diagram has three main features: the red sequence, the green valley, and the blue cloud. The red sequence includes most red galaxies, which are generally elliptical galaxies. The blue cloud includes most blue galaxies, which are generally spirals. In between the two distributions is an underpopulated space known as the green…
The large elliptical galaxy IC 1101
Elliptical galaxy IC 2006
The galaxy located in the image is 4C 73.08, a giant elliptical galaxy.
Hercules A, a supergiant elliptical galaxy and also a radio galaxy. The radio lobes shown here in pink are over a million light-years across.