A Cepheid star is a type of variable star, which means that its brightness is not constant.
Use a calculator to solve each problem. Round
your answers to the nearest hundredth.
The relationship between the brightness of a
Cepheid star and its period, or length of its pulse,
is given by
What is the absolute magnitude of a star that has
a period of 62 days?
M = - 2.78 (log P) - 1.35,
RETRY
where M is the absolute magnitude, or
brightness, of the star, and P is the number of
days required for the star to complete one cycle.
Moo