Composition of KBO (50000) Quaoar | Astronomy & Astrophysics (A&A)

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Volume 501 / No 1 (July I 2009)

A&A, 501 1 (2009) 349-357

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Table 4:

Best fitting model, model without N₂, model with 10% N₂.
	Best Model	No N₂ model	10% N₂ model	Reference^e
rms^a	$1.1\times10^{-4}$	$1.8\times10^{-4}$	$1.6\times10^{-4}$	-
Titan tholin ^b	0.12	0.09	0.11	(1)
Triton tholin ^b	0.06	0.05	0.04	(2)
Triton tholin ^c	0.03	0.05	0.04	(2)
H₂O amorph (40 K) ^d	0.18(1.3 $\mu$ m)	0.29(1.5 $\mu$ m)	0.22(1.8 $\mu$ m)	(3)
Titan tholin ^d	0.13(11.2 $\mu$ m)	0.14(11.8 $\mu$ m)	0.13(12.0 $\mu$ m)	(1)
H₂O cryst (40 K) ^d	0.18(14.6 $\mu$ m)	0.24(11.0 $\mu$ m)	0.23(11.4 $\mu$ m)	(3)
C₂H₆ ^d	0.04(6.5 $\mu$ m)	0.04(8.4 $\mu$ m)	0.04(8.8 $\mu$ m)	(4)
Triton tholin ^d	0.14(7.4 $\mu$ m)	0.15(6.8 $\mu$ m)	0.14(7.6 $\mu$ m)	(2)
N₂ (36-60 K) ^d	0.20(16.1 mm)	0(16.0 mm)	0.1(15.8 mm)	(5)
CH₄ (30-35 K) ^d	0.13(9.4 $\mu$ m)	0.14(7.1 $\mu$ m)	0.16(8.4 $\mu$ m)	(6), (7)

^a: rms error of each model when compared to the data.
^b: Material mixed as inclusions in CH₄ ice.
^c: Material mixed as inclusions in crystalline H₂O ice.
^d: Material mixed intimately, with grain size in parenthesis. Temperature listed after the name of the component.
^e: References. (1) Imanaka et al. (2005); (2) Khare et al. (1994); (3) Mastrapa & Sandford (2008); (4) Mastrapa (private comm); (5) Green et al. (1991); (6) Grundy et al. (2002); (7) Hudgins et al. (1993).
N.B.: All models were computed with a porosity of 0.1.

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