Other causes of valve disease include: 1  Deposits of calcium (calcification) in parts of the valve. 2  A floppy valve, which is a common cause of mild mitral valve regurgitation. 3  Some congenital heart problems. 4  Infection of the valve (infective endocarditis). 5  A complication of various uncommon diseases.
exists and is an alternate of . Castor is a variable star and also a quadruple star system, and has a spectral class of A1/A2 giving it a colour of white to white blue. Castor is a variable star and also a quadruple star system, and has a spectral class of A1/A2 giving it a colour of white to white blue. See link for more information.  <br /><br /> See link for more information. Castor is a variable star and also a quadruple star system, and has a spectral class of A1/A2 giving it a colour of white to white blue. <br /><br />
Two types of stars appear on the flyout: the perfect star, which is a standard, solid five-pointed star; and the complex star, which consists of three interlocking triangles and contains many separated inner areas to which different fill colors can be applied.ave. The CorelDRAW Graphics Suite includes tools for drawing several basic shapes, including two types of stars. Which star you use depends not only on its appearance but on the type of color fill you plan to use; otherwise, both stars are identically selected and drawn.