Stars: Properties and Classification

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L=4πR 2 σT 4 Survey Question Two stars have the same surface temperature, but the radius of one is 10 times the radius of the other. The larger star is 1) 10 times more luminous 2) 100 times more luminous 3) 1000 times more luminous 4) 1/10 th as luminous 5) 1/100 th as luminous
L=4πR 2 σT 4 Survey Question Suppose two stars are at equal distance <strong>and</strong> have the same radius, but one has a temperature that is twice as great as the other. The luminosity of the hotter star is ____ as the other. 1) 1/2 as great 2) 1/4 as great 3) the same 4) 4 times as great 5) 16 times as great
Page 1 and 2: Stars: Properties and Classificatio
Page 3 and 4: Assigned Reading n Units 52.1-2-3,
Page 5 and 6: n There are four principal characte
Page 7 and 8: 1 (AU) D (in Parsecs) = P (in arcse
Page 9 and 10: Parallax would be easier to measure
Page 11 and 12: Luminosity Luminosity is the total
Page 14 and 15: The Sun radiates an enormous amount
Page 16 and 17: Brightness is different from Lumino
Page 18: Surface Temperature
Page 21 and 22: Spectral Types For historical reaso
Page 23: Use Temperature and Luminosity to M
Page 27 and 28: Stellar Properties Survey Questions
Page 29 and 30: Mass: How do you measure the mass o
Page 31 and 32: Binary Stars: use the Generalized K
Page 33 and 34: Summary n There are four principal
Page 35 and 36: Nuclear fusion rate rises dramatica
Page 37 and 38: Thus… n More massive = n Higher T
Page 39 and 40: The Hertzsprung-Russell Diagram
Page 41 and 42: The Hertzsprung-Russell Diagram L=4
Page 43 and 44: The Hertzsprung-Russell Diagram Whi

Stars: Properties and Classification

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