Table 3
Summary of the initial values.
Parameter | C/2001 Q4 | C/2002 T7 | 9P/Tempel 1 | |||
|
||||||
Q(H2O) | 2.6 × 1029 s-1 | [1] | 6.9 × 1028 s-1 | [7] | 3.4 × 1027(1.21 × 1028)s-1 | [9] ([11]) |
M(CO) | 0.042 | [2] | 0.04 | † | 0.147 (0.041) | [10] |
M(CO2) | 0.04 | † | 0.04 | † | 0.04 | † |
M(CH4) | 0.006* | [3] | 0.006* | [3] | 0.006* | [3] |
M(H2CO) | 0.011* | [3] | 0.016 | [13] | 0.011* | [3] |
M(CH3OH) | 0.015 | [4] | 0.038 | [4] | 0.048 (0.014) | [11] |
M(NH3) | 0.007* | [3] | 0.007* | [3] | 0.007* | [3] |
M(HCN) | 0.00047 | [5] | 0.0033 | [5] | 0.006 (0.0017) | [11] |
M(HNCO) | 0.001* | [3] | 0.001* | [3] | 0.001* | [3] |
M(CH3CN) | 0.0002* | [3] | 0.0002* | [3] | 0.0002* | [3] |
R N | 3.75 km | [6] | 52.0 km | [8] | 3.0 km | [12] |
T(r = RN) | 171.6 K | ‡ | 169.3 K | ‡ | 166.2 K | ‡ |
v(r = RN) | 325.1 ms-1 | ‡ | 322.9 ms-1 | ‡ | 319.9 ms-1 | ‡ |
Notes. Q represents the production rates in absolute units, M production rates relative to the production rate of water. RN, T, and v are the nuclear radius, and the temperature and velocity of the neutral fluid, respectively. For comet 9P/Tempel 1, two values of the water production from different publications were used.
References. [1] – Biver et al. (2009), average of all data from the time 29/30 Apr. 2004; [2] – Feldman et al. (2004); [3] – Bockelee-Morvan & Crovisier (2003); [4] – Remijan et al. (2006); [5] – Friedel et al. (2005); [6] – Tozzi et al. (2003) (estimated value); [7] – Howell et al. (2004); [8] – Weiler et al. (2011) (upper limit); [9] – Küppers et al. (2005); [10] – Feldman et al. (2006); [11] – Mumma et al. (2005); [12] – A’Hearn et al. (2005); [13] – Milam et al. (2006), H2CO from parent species.
Estimate, based on Despois et al. (2005).
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