Stars: Properties and Classification

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Stellar Parallax The measurements are taken six months apart. The baseline is the diameter of the Earth’s orbit. What is seen What is seen The ½ of the angle between the current location <strong>and</strong> the 6-month location is called the stellar parallax = P.
1 (AU) D (in Parsecs) = P (in arcseconds) P, the parallax angle, is measured in arcseconds 60 arcseconds = 1 arcminute 60 arcminutes = 1 degree There are 3600 arcseconds in a degree The larger P, the smaller D The smaller P, the larger D 1 parsec = 3.26 light years = 3.086x10 16 meter Parallax Distance
Page 1 and 2: Stars: Properties and Classificatio
Page 3 and 4: Assigned Reading n Units 52.1-2-3,
Page 5: n There are four principal characte
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 and 24: Use Temperature and Luminosity to M
Page 25 and 26: L=4πR 2 σT 4 Survey Question Supp
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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