Stellar Astronomy Basics
Stellar magnitudes, spectral classification, HR diagram and stellar evolution overview.
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पूरा मॉक दीजिए →Q1 · Stellar Astronomy Basics · HARD
A main sequence star has a surface temperature of 12,000 K and a luminosity 400 times that of the Sun. If the Sun's surface temperature is 5,800 K, what is the approximate radius of this star in solar radii?
Q2 · Stellar Astronomy Basics · MEDIUM
A star has an absolute magnitude M = +1.5 and is located at a distance of 50 parsecs. What is its apparent magnitude m?
Q3 · Stellar Astronomy Basics · MEDIUM
A main sequence star has a surface temperature of 8400 K. If its luminosity is 25 times that of the Sun, what is the approximate radius of this star in solar radii? (Assume solar temperature T☉ = 5800 K)