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Table 6
Gas temperature measurements.
UT date | ⟨ rh ⟩ | Offset | Lines | Rotational temperature | Gas temperature |
[mm/dd.dd] | [AU] | [″] | [K] | [K] | |
|
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C/2002 X5 (Kudo-Fujikawa): (2003) | |||||
01/13.61 | 0.553 | 3.5 | CH3OH 157 GHz | 38 ± 10 | 30 ± 10 |
01/26.54 | 0.213 | 3.0 | CH3OH 157 GHz |
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01/26.54 | 0.213 | 1.6 | CH3CN 147 GHz |
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> 190 |
01/26.54 | 0.213 | 1.0 | HCNJ(3–2), v2 = 1/v2 = 0 | < 245 | < 5301 |
03/12.72 | 1.184 | 3.0 | CH3OH 157 GHz |
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|
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C/2002 V1 (NEAT): (2003) | |||||
02/17.0 | 0.120 | 1.9 | HCNJ(3–2), v2 = 1/v2 = 0 | < 285 | < 5741 |
02/17.25 | 0.116 | 1.6 | CH3OH 252 GHz |
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02/17.3 | 0.110 | 1.6 | CH3OH 252 GHz+203A+− |
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02/17.6 | 0.108 | 1.8 | HCNJ(3–2)/(1–0) |
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|
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C/2006 P1 (McNaught): (2007) | |||||
01/16.56 | 0.228 | 3 | HCNJ(3–2)/(1–0) | 299![]() |
> 3752 |
01/16.56 | 0.228 | 5 | HCNJ(3–2)/(1–0) | > 1682 | > 6002 |
01/16.55 | 0.229 | 5.9 | CH3OH 157 GHz |
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01/16.56 | 0.229 | 4.9 | CH3OH 157 GHz |
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01/17.5 | 0.255 | 6.5 | HCNJ(3–2), v2 = 1/v2 = 0 | < 278 | < 6771 |
01/17.55 | 0.255 | 6.7 | CH3OH 157 GHz | > 130 | > 90 |
01/17.55 | 0.255 | 6.9 | CH3CN 147 GHz |
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