Astronomy > Lab Report > Lab 2 - Stellar Evolution University of Washington ASTR 101 (All)
Lab 2 - Stellar Evolution University of Washington ASTR 101
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Lab 2 – Stellar Evolution 47 Tuc: H-R Diagram 10 12 14 16 18 20 22 24 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 Apparent Magnitude Color (B-V) 47 Tuc: H-R Diagram Pleiades: H-R Diagram 2 4 6 8 10 12... 14 16 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 Apparent Magnitude Color (B-V) Pleiades: H-R Diagram Lab-2-Stellar-Evolutiondocx/ 1. Approximate ages: a. The turning point for 47 Tuc appears to be around B-V colors 0.5-0.7 on the H-R diagram. The B-V color 0.5 corresponds to an F-type star. The B-V color 0.7 corresponds to a G-type star. An F-type star has a typical main sequence lifetime of about 4 billion years and a G-type star has a typical main sequence lifetime of about 10 billion years. Given these lifetimes, the approximate age of 47 Tuc is between 4 and 10 billion years, leaning [Show More]
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