This star has a mass of 3.3 MSun. What is the main sequence lifetime of this star? You may assume that the lifetime of the sun is 1010 yr. PropertySunBetelgeuseMass (2 x 1033 g)116Radius (km)700,000500,000,000Surface temperature (K)5,8003,600Core temperature (K)15,000,000160,000,000Luminosity (4 x 1026 w)46,000Average density (g/cm)1.41.3 x 10-7Age (millions of years)4,50010Table 22.2 Lifetimes of Main-Sequence StarsSpectral TypeSurface Temperature (K)MassLifetime on Main Sequence (years)(Mass of Sun = 1)0554,000401 millionB029,2001610 millionAO96003.3500 millionFO73501.72.7 billionGO60501.19 billionKO52400.814 billionMO37500.4200 billion

The main sequence lifetime is given as:t α1M2.5it is given star has mass of 3.3 MSunSo,…

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