High-dispersion infrared spectroscopic observations of comet 8P/Tuttle with VLT/CRIRES

Free Access

Table 3:

Production rates and mixing ratios of comet 8P/Tuttle.
January 28, 2008
Molecules	$T_{\rm rot}$	Production rate	Mixing ratio
	[K]	[molecules s^-1]	[%]
H₂O	70 $\pm$ 15	(4.6 $\pm$ 0.4) $\times$ 10²⁸	100
HCN	54 $\pm$ 9	(3.4 $\pm$ 1.1) $\times$ 10²⁵	0.07 $\pm$ 0.02
C₂H₂	(70)^*	(2.1 $\pm$ 0.7) $\times$ 10²⁵	0.05 $\pm$ 0.02

February 4, 2008
Molecules	$T_{\rm rot}$	Production rate	Mixing ratio
	[K]	[molecules s^-1]	[%]
H₂O	65 ⁺¹⁵_-13	(3.0 $\pm$ 0.2) $\times$ 10²⁸	100
CH₄	(70)^*	(1.7 $\pm$ 1.1) $\times$ 10²⁶	0.6 $\pm$ 0.4
C₂H₆	(70)^*	(6.7 $\pm$ 1.3) $\times$ 10²⁵	0.23 $\pm$ 0.04
CH₃OH	(70)^*	(9.7 $\pm$ 1.3) $\times$ 10²⁶	3.3 $\pm$ 0.4

^* This value is adopted, and is based on H₂O measurements (see text).

Source LaTeX | All tables | In the text

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.