Here we examine what you can conclude about the dominance of pp vs CNO for stars. Sketch the dependence of the reaction rates with central temperature. Then address the following questions: 10. The Sun's central temperature is 15.6x106 K. Where does it fall on your graph? 11. Estimate the proportion of the Sun's luminosity supplied by the p-p chain vs. the CNO cycle. 12. Your sketch of the CNO temperature dependence should exhibit a threshold temperature below which CNO does not contribute. Approxi- mately what value is that threshold? Please submit just the answers (no graphs needed!) for credit. Here we examine what you can conclude about the dominance of pp vs CNO for stars. Sketch the dependence of the reaction rates with central temperature. Then address the following questions: 10. The Sun's central temperature is 15.6x106 K. Where does it fall on your graph? 11. Estimate the proportion of the Sun's luminosity supplied by the p-p chain vs. the CNO cycle. 12. Your sketch of the CNO temperature dependence should exhibit a threshold temperature below which CNO does not contribute. Approxi- mately what value is that threshold? Please submit just the answers (no graphs needed!) for credit