Question

A main sequence star whose spectral type is O6 has an apparent magnitude of
m_v= 5:8.

i) Calculate the distance to the star: ignoring contributions of stellar extinction from ISM.

ii) if interstellar medium contributes 1.3 magnitudes of extinction.

Answer 1

Problem tar utonc aphrenr magnitude my 5 Sol utim Distanti modulw equations given ol parsecs oluutanis Ateltar medium 206265 aun 32.6 is つ/.gl-le 2311311-215 5l IAU 20626 1b. os) 6,0

2. Ccatculateol) 5 d to .4 2,06 265x1。6" AU cz