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Table B.1.

Band detections and corresponding attribution on Chiron’s Spectrum. See 3.1 and B for details.

λ (μm) ν (cm−1) Detection Species Attribution
1.4–1.7 7143–5882 F H2O, –OH (tholins) M
1.97, 2.01, 2.07 5076, 4975, 4831 F CO2 F
1.93–2.13 5181–4695 F H2O, –OH (tholins) M
2.62 3817 F C3O T
2.69, 2.775 3717.5, 3604 F CO2 F
3.095 3231 F H2O F
3.193 3132 T HCN F
3.279, 3.290, 3.300, 3.313 3048,3039.5,3030,3018 F CH4 F1
3.375,3.40,3.483 2963,2971,2871 F C2H6,C3H8 M2
3.825 2614 T3 H2CO3 T
3.9 2564 T3 H2S T
4.1–4.3 2439–2326 F CO2 F
4.15 2409 F C3O2 T
4.23–4.29 2364–2331 F CO2 F4
4.378 2284 F 13CO2 F
4.396–4.488 2275–2228 F C3O2/C3O T/M
4.673 2140 F CO F
4.78 2092 F 13CO/HCN M
4.89 2045 F CO3/OCS M
5.016–5.25 1994–1905 T Carbon Oxides T

Detections or Attributions F = Firm; T = tentative; M = multiple possible contributions

(1)

Fluorescent Emission

(2)

–CH Aliphatic stretching, light hydrocarbons

(3)

Confirmed by GO–2 Webb DDT observations in different epoch (personal communication)

(4)

Ice absorption & emission from CO2 gas in the coma

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