Molecular hydrogen in the zabs = 2.66 damped Lyman-α absorber towards Q J 0643−5041 - Physical conditions and limits on the cosmological variation of the proton-to-electron mass ratio

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Volume 562 (February 2014)

A&A, 562 (2014) A88

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Table 3

H₂, C i, and C ii^⋆ column densities in the z_abs = 2.6586 H₂-bearing cloud towards Q J 0643−5041.

Transition	Δv^a			b
	[km s^-1]	[cm^-2]	[cm^-2]	[km s^-1]


H₂ (J = 0)	0.25 ± 0.08	18.22 ± 0.01	...	1.59 ± 1.10^d
H₂ (J = 1)	0.25 ± 0.08	18.25 ± 0.01	...	1.39 ± 0.70^d
H₂ (J = 2)	0.33 ± 0.08	16.62 ± 0.12	...	1.41 ± 0.29^d
H₂ (J = 3)	0.33 ± 0.08	14.84 ± 0.05	...	2.14 ± 0.61^d
H₂ (J = 4)	0.57 ± 0.25	13.94 ± 0.02	...	3.45 ± 1.01^d
H₂ (J = 5)	0.25^b	13.86 ± 0.07	...	9.49 ± 2.37
H₂ (J = 6)	0.25^b	13.40 ± 0.16	13.7	9.49^b
H₂ (J = 7)	0.25^b	13.35 ± 0.13	13.5	9.49^b


C I	0 ± 0.25	12.57 ± 0.09	...	0.71 ± 0.29
C I*	0 ± 0.25^c	12.47 ± 0.06	...	0.71 ± 0.29^c
C I**	0 ± 0.25^c	11.48 ± 0.30	11.95	0.71 ± 0.29^c


C II*	0.82 ± 0.08	14.12 ± 0.04	...	1.30 ± 0.04

Notes.

^(a)

Velocity relative to C i.

^(b)

Fixed value.

^(c)

Tied parameter.

^(d)

Statistical spread rather than fit error.

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