Beta Canis Majoris is the prototype star for a certain class of oscillating, variable stars characterized by a multiplicity of periods. Burnham says that there is relation between period and luminosity as with the better known Cepheid variables.
Beta Canis Majoris is also of some interest. Its name, "Murzim" means "The Announcer", as its appearance on the horizon signifies the approach of Sirius. This is a pulsating giant that has become the prototype of a class of variable stars (see below).
MIRZAM (Beta Canis Majoris). Commonly also seen spelled "Murzim," Mirzam is the Beta star of Canis Major, the Larger Dog, the greater of Orion's canine companions.
Mirzam Beta Canis Majoris
Misam Kappa Persei
Mizar Zeta Ursae Majoris
Mothallah Alpha Trianguli
Muliphein Gamma Centauri, Gamma Canis Majoris
Muphrid (or Mufrid) Eta Bootis
Murzim Beta Canis Majoris
Muscida Omicron Ursae Majoris, or ...
β (beta) Cephei variables (or beta Canis Majoris variables, as these stars are generally called in Europe) undergo short period pulsations in the order of 0.1 - 0.6 days with an amplitude of 0.01 - 0.3 magnitudes.
Artist's conception of the Local Bubble (containing the Sun and Beta Canis Majoris) and the Loop I Bubble (containing Antares).
The primary component is the brightest star in the Beta Canis Majoris group of variable stars. Alfirk is also the prototype for Beta Cephei variable stars, exhibiting variations in luminosity due to pulsations of its surface.
have a doubly periodic light curve, and are confined within a narrow band of the H-R diagram which lies near the end of core hydrogen-burning stars of roughly 10-20 M. Beta Cephei itself has at least three components. (also called Beta Canis Majoris ...
 See also: Star, Canis Major, Period, Sun, S Star
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