Radiation Processingin the
Kuiper Belt
Mike BrownCaltech
Spectrum of pluto
Pluto
http://en.wikipedia.org/wiki/Image:EightTNOs.png
(Brown et al 2007)
Pluto
2005 FY9
2005 FY9
C2H6+C2H4
2005 FY9
C2H6+C2H4
2005 FY9
C2H6+C2H4+C2H2
Schaller & Brown ApJL (2007a)
Tem
pera
ture
(K)
Diameter (km)
`
Schaller & Brown ApJL (2007a)
Tem
pera
ture
(K)
Diameter (km)
Schaller & Brown ApJL (2007a)
Tem
pera
ture
(K)
Diameter (km)
Schaller & Brown ApJL (2007a) Diameter (km)
Schaller & Brown ApJL (2007a) Diameter (km)
http://en.wikipedia.org/wiki/Image:EightTNOs.png
Brown et al. 2005
Eris
Eris
No N2 2.148 micron feature detectedNo CO 2.352 micron feature detected
Alpha N2
Beta N2
http://en.wikipedia.org/wiki/Image:EightTNOs.png
Schaller & Brown ApJL (2007a) Diameter (km)
Quaoar - Water ice spectrum
(Jewitt & Luu 2004)
Quaoar Spectrum
Schaller & Brown ApJL (2007b)
Quaoar Spectrum40% crystalline water ice w/ 10 micron grains
Schaller & Brown ApJL (2007b)
Quaoar with water ice + methane model
Water ice
Water ice+methane
Schaller & Brown ApJL (2007b)
Quaoar
C2H6
Schaller & Brown ApJL (2007b)
Nor
mal
ized
Refl
ecta
nce
Quaoar with full spectral model
35% crystalline water ice, 6% methane, 4% ethane, 55% dark continuummethane methane methane
ethane
Schaller & Brown ApJL (2007b)
2005 FY9
Quaoar
Eris
Pluto