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Astronomy & Telescope Astronomy: Variable Star

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  Variable Star Variable Star: Astronomy: Variable Star - VARIABLE TERMS

VARIABLE TERMS

The brightest magnitude a variable star reaches is called its maximum, while the faintest magnitude is its minimum. The difference between the star's maximum and minimum is its amplitude, and the time between successive maxima or minima is called the period. A light curve is a plot of the star's changing brightness over time.

 
 
  Posted by astronomy on Saturday, December 11 @ 01:29:11 CST (9 reads)
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  Variable Star Variable Star: Astronomy: Variable Star - CLASSES OF VARIABLES

CLASSES OF VARIABLES

There are three broad classes ot variable stars: pulsating, eruptive, and eclipsing.

 
 
  Posted by astronomy on Saturday, December 11 @ 01:28:14 CST (12 reads)
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  Variable Star Variable Star: Astronomy: Variable Star - Magnitude-HOW BRIGHT

HOW BRIGHT?

After locating a variable star, many observers estimate its apparent magnitude. There are various methods, but most use an interpolative method, comparing a variable's brightness with that of nearby stars.

 
 
  Posted by astronomy on Saturday, December 11 @ 01:27:24 CST (10 reads)
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  Variable Star Variable Star: Astronomy: Variable Star - OBSERVING VARIABLE STAR

OBSERVING VARIABLE STAR

Not all stars shine with a steady, invariable light. Many fluctuate in brightness over periods ranging from minutes to years

 
 
  Posted by astronomy on Saturday, December 11 @ 01:26:26 CST (9 reads)
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