1. Radiation Processing in the Kuiper Belt Mike Brown Caltech

5. Spectrum of pluto Pluto

7. CH4 N2

8. C2H2 C2H4 C2H6

9. http://en.wikipedia.org/wiki/Image:EightTNOs.png

10. (Brown et al 2007) Pluto 2005 FY9

11. CH4

12. 2005 FY9

15. C2H6

16. 2005 FY9 C2H6+C2H4

18. 2005 FY9 C2H6+C2H4

19. 2005 FY9 C2H6+C2H4+C2H2

20. 2005 FY9 CH4

21. 2005 FY9 CH4

22. C2H2 C2H4 C2H6

24. Schaller & Brown ApJL (2007a) Temperature (K) Diameter (km)

25. ` Schaller & Brown ApJL (2007a) Temperature (K) Diameter (km)

26. Schaller & Brown ApJL (2007a) Temperature (K) Diameter (km)

27. Schaller & Brown ApJL (2007a) Diameter (km)

28. Schaller & Brown ApJL (2007a) Diameter (km)

29. http://en.wikipedia.org/wiki/Image:EightTNOs.png

30. Brown et al. 2005 Eris

31. No N2 2.148 micron feature detected No CO 2.352 micron feature detected Alpha N2 Beta N2

32. http://en.wikipedia.org/wiki/Image:EightTNOs.png

33. Schaller & Brown ApJL (2007a) Diameter (km)

34. Quaoar - Water ice spectrum (Jewitt & Luu 2004)

36. Quaoar Spectrum Schaller & Brown ApJL (2007b)

37. Quaoar Spectrum 40% crystalline water ice w/ 10 micron grains Schaller & Brown ApJL (2007b)

40. Quaoar with water ice + methane model Water ice Water ice+methane Schaller & Brown ApJL (2007b)

41. Quaoar C2H6 Schaller & Brown ApJL (2007b) Normalized Reflectance

42. Quaoar with full spectral model 35% crystalline water ice, 6% methane, 4% ethane, 55% dark continuum methane ethane Schaller & Brown ApJL (2007b)

43. 2005 FY9 Quaoar Eris Pluto