The molecular gas content of the advanced S+E merger NGC 4441 - Evidence for an extended decoupled nuclear disc?

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Table 5:

Parameters of $\rm ^{12}$ CO and $\rm ^{13}$ CO at the central position.
Line	Central velocity (lsr)		Linewidth		Peak		int. Intensity
	(km s^-1)		(km s^-1)		(K)		(K km s^-1)
$\rm ^{12}$ CO(1-0)	2698	2796	125	147	0.02	0.036	7.52 $\pm$ 0.22
$\rm ^{12}$ CO(2-1)	2655	2802	93	114	0.016,	0.039	6.10 $\pm$ 0.73
$\rm ^{13}$ CO(1-0)	2725		208		0.0018		0.37 $\pm$ 0.06
$\rm ^{13}$ CO(2-1)	2785		61		0.0033		0.25 $\pm$ 0.09

Gaussians were fitted to determine linewidths, peak intensity, and central velocity. For $\rm ^{12}$ CO, we fitted two components to the measured line, whereas for $\rm ^{13}$ CO only one component was fitted. The given intensity is integrated over both components. Temperatures are given in $T_{\rm MB}$ .

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