The Stars and Our Sun - Lecture Presentation

8/18/2019 The Stars and Our Sun - Lecture Presentation

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TABLE 16.1 The Standard Solar Model

Region Inner Radius (km) Temperature (K) Density (kg/m3) Defining Properties

Core 0 15,000,000 150,000 Energy generated by nuclear fusion

Radiation zone 200,000 7,000,000 15,000 Energy transported by electromagnetic radiation

Convection zone 496,000* 2,000,000 150 Energy carried by convection

Photosphere 696,000

*

5800 23

10−4

Electromagnetic radiation can escape—the partof the Sun we see

Chromosphere 696,500* 4500 53 10−6 Cool lower atmosphere

Transition zone 698,000* 8000 23 10−10 Rapid increase in temperature

Corona 706,000* 3,000,000 10−12 Hot, low-density upper atmosphere

Solar wind 10,000,000 > 1,000,000 10−23 Solar material escapes into space and ows out-ward through the solar system


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The Stars and Our Sun - Lecture Presentation