Exam 64: Variable Stars

The layer in a variable that star that is responsible for alternately absorbing and releasing the energy flowing from the center of the star is made up of

Cepheid's have pulsation periods in the range of _____.

A large explosion of a star is known as a _______.

We use this to help measure the distance to variable stars:

Using the period of bright stars and the standard candle formula you can measure distances to galaxies at the edge of the universe.

Mira variable stars change their brightness by

Mira variables have a period of about a day.

A narrow area above the main sequence where variable stars exist is called the _______.