Fundamental plane
Encyclopedia
The fundamental plane may refer to:
- Fundamental plane (spherical coordinates)Fundamental plane (spherical coordinates)The fundamental plane in a spherical coordinate system is a plane which divides the sphere into two hemispheres. The latitude of a point is then the angle between the fundamental plane and the line joining the point to the centre of the sphere....
, which divides a spherical coordinate system - Fundamental plane (elliptical galaxies)Fundamental plane (elliptical galaxies)The fundamental plane is a relationship between the effective radius, average surface brightness and central velocity dispersion of normal elliptical galaxies. Any one of the three parameters may be estimated from the other two, as together they describe a plane that falls within their more...
, which shows an empirical relationship among mean surface brightness, velocity dispersion and effective radius of an elliptical galaxy