Molecular investigations of comets C/2002 X5 (Kudo-Fujikawa), C/2002 V1 (NEAT), and C/2006 P1 (McNaught) at small heliocentric distances

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Volume 528 (April 2011)

A&A, 528 (2011) A142

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Table 3

Molecular observations in comet C/2002 V1 (NEAT).

UT date (2003)	⟨ r_h ⟩	⟨ Δ ⟩	Int. time	Line		Velocity offset	Offset
[mm/dd.dd–dd.dd]	[AU]	[AU]	[min]		[K km s^-1]	[km s^-1]

IRAM 30-m:
02/16.49–16.59	0.136	0.978	50	HCN(3−2)	4.146 ± 0.061	−0.02 ± 0.03	1.8″
	0.136	0.978	19	HCN(3−2)	2.173 ± 0.112	−0.01 ± 0.11	5.1″
02/17.48–17.52	0.108	0.985	19	HCN(3−2)	3.558 ± 0.069	+ 0.01 ± 0.04	1.8″
02/17.48–17.50	0.109	0.985	9	HCN(3−2)	1.819 ± 0.140	−0.18 ± 0.17	5.7″
02/17.55–17.66	0.106	0.987	85	HCN(1−0)	0.116 ± 0.021	+ 0.06 ± 0.32	1.8″
02/16.49–16.59	0.135	0.978	29	HNC(3−2)	0.648 ± 0.113	+ 0.09 ± 0.35	5.5″
02/16.49–16.66	0.134	0.978	85	HNC(3−2)	0.914 ± 0.060	+ 0.25 ± 0.13	2.8″
02/16.49–16.59	0.135	0.978	27	CS(3−2)	0.242 ± 0.054	+ 0.57 ± 0.42	5.5″
02/16.49–16.66	0.134	0.978	87	CS(3−2)	0.336 ± 0.026	+ 0.05 ± 0.13	2.8″
02/17.48–17.52	0.108	0.985	22	CS(3−2)	0.373 ± 0.046	−0.34 ± 0.21	1.7″
02/17.48–17.50	0.109	0.985	6	CS(3−2)	0.180 ± 0.085		5.6″
02/16.49–17.50	0.130	0.980	22	CH₃CN(8−7)¹	< 0.126		2.5″
02/17.61–17.66	0.106	0.987	35	CO(2−1)	< 0.161		2.8″
02/16.54–17.66	0.120	0.982	80	OCS(12−11)	< 0.029		2.1″
				HC₃N(16−15)	< 0.031		2.1″
				H₂CO(2₀₂−1₀₁)	0.032 ± 0.012		2.1″
02/17.55–17.60	0.107	0.986	50	H₂CO(3₁₂−2₁₁)	< 0.136		1.0″
02/16.60–17.60	0.120	0.982	107	CH₃OH(3, 3−3, 2)A^± ²	0.072 ± 0.045		1.8″
				CH₃OH(4, 3−4, 2)A^±	0.213 ± 0.046	+ 0.20 ± 0.35
				CH₃OH(5, 3−5, 2)A^±	0.092 ± 0.044
				CH₃OH(6, 3−6, 2)A^±	0.182 ± 0.047	+ 0.31 ± 0.48
				CH₃OH(7, 3−7, 2)A^±	0.198 ± 0.041	−0.28 ± 0.29
				CH₃OH(8, 3−8, 2)A^±	0.057 ± 0.041
02/16.60–17.60	0.120	0.982	107	SO(5₆−4₅)	< 0.071		1.8″
02/17.61–17.66	0.106	0.987	35	SiO(6−5)	< 0.190		1.7″

Notes.

⁽¹⁾

Sum of CH₃CN(8, 0−7, 0), CH₃CN(8, 1−7, 1), CH₃CN(8, 2−7, 2) and CH₃CN(8, 3−7, 3) lines.

⁽²⁾

Sums of twin lines.

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