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Unformatted text preview: instability strip, the star becomes unstable and begins to pulsate * Cepheid variables are high-mass pulsating variables * RR Lyrae variables are low-mass, metal-poor pulsating variables with short periods * Long-period variable stars also pulsate but in a fashion that is less well understood * There is a direct relationship between Cepheid periods of pulsation and their luminosities Mass transfer can affect the evolution of close binary star systems * Mass transfer in a close binary system occurs when one star in a close binary overflows its Roche lobe * Gas flowing from one star to the other passes across the inner Lagrangian point * This mass transfer can affect the evolutionary history of the stars that make up the binary system...
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This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.
- Fall '10