Question

What is the absolute magnitude of a type 1 cepheid variable star which has a period of 30 days?

Answer 1

`M_v=-5.5` OR `10^24`of Luminosity of the Sun

Explanation:

The relationship is described by the equation -
`M_v = - [2.76 (log_10(P) - 1.0)] - 4.16`
Where P is in days

Or in `L_(sun),`