One can make a color-color plot by arranging stars in a two-dimensional graph, where each axis measures a different color index. Below are some examples from the SDSS, which uses a set of broadband filters called (u, g, r, i, z); they are very roughly equivalent to (U, B, R, I, _).
regime - the organization that is the governing authority of a political unit; the government reduced taxes; the matter was referred to higher authorities. authorities, government.
Top Definition. tyrant. (1) ruler who has unlimited power over other people, and uses it unfairly and cruelly. also see word bush /bush. Tamir, one of several sons of the exiled ruler, vowed he would liberate his country from the tyrant.