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Course: ASTRO 101, Fall 2009
School: Washington
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Sequence Main Lifetime versus B - V 12.0 Log10 Main Sequence Lifetime (years) y = -1.4261x2 + 4.1579x + 7.9716 11.0 10.0 9.0 8.0 7.0 6.0 5.0 -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 B-V To find the main sequence lifetime years, in first substitute the B-V value into the equation given on the chart to solve for the logarithm of the...

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Sequence Main Lifetime versus B - V 12.0 Log10 Main Sequence Lifetime (years) y = -1.4261x2 + 4.1579x + 7.9716 11.0 10.0 9.0 8.0 7.0 6.0 5.0 -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 B-V To find the main sequence lifetime years, in first substitute the B-V value into the equation given on the chart to solve for the logarithm of the lifetime. Then, take 10y (10 raised to the power y) to get t...

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