- #1
samjohnny
- 84
- 1
Homework Statement
Homework Equations
##m = m_0 − 2.5 log_{10} f## where ##m## is the absolute magnitude of an object, and ##m_0## is the zero point.
The Attempt at a Solution
I'm having difficulty with is part b, the answer to which I believe is required for the subsequent parts.
I obtain the following through treatment of the given equation: ##M_{abs}=m_{obs}-5log_5(\frac{d}{10})## where ##d## is the distance we're looking to compute. Using the fact that both Star A and Vega are A0 stars, I assumed that the absolute V-band magnitude of Star A would be the same as Vega's, which would be ##M_{abs}=+0.6##, however the observed/apparent magnitude ##m_{obs}## remains unknown, and so I'm unable to proceed to compute the distance.
It seems simple, but I can't quite put my finger on it..