Question

How is a cepheid Variable star identified?

Pulsates radically with a clear change in Luminosity

It’s luminosity dims as it rotates

It’s being torn apart by tidal forces

It’s brightness appears to change during transit

Penn foster

Answer 1

lumious

Step-by-step explanation:

because it luminiuos

Answer 2

Step-by-step explanation:

A cepheid Variable star is identified by pulsating radically with a clear change in luminosity. These stars have a regular periodicity in their pulsations, which can be used to calculate their luminosity and distance from Earth. This property makes them important tools for measuring distances in astronomy.