Kinetic temperatures toward X1/X2 orbit interceptions regions and giant molecular loops in the Galactic center region

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Volume 549 (January 2013)

A&A, 549 (2013) A36

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Table 4

Kinetic temperatures and densities derived from LVG calculations from NH₃ and CS data

Source	Cloud	Low temperature		High temperature		Single temperature from p-NH₃
	number	T_kin	n(H₂)	T_kin	n(H₂)	T_kin	n(H₂)
		[K]	10⁴ cm^-3	[K]	10⁴ cm^-3	[K]	10⁴ cm^-3

Halo 1	1					>115	<1.00
	2					>90
	3					>135

Halo 2	1					113^c
	2					113^c	<2.51

Halo 3	1					113^c
	2					113^c

Halo 4	1					95

Halo 5	1					95^c

Disk X1-1	1	38		>300^a

Disk X2-1	1	38		100

Disk X1-2	1	52		215

Disk X2-2	1	28		95

Disk 1	1	23	<1.12	>154^b	<0.16
	2	38		>82^b

Disk 2	1	68		200
	2					>145
	3	50		80

Notes.

^(a)

LVG gives a T_kin greater than 300 K which is the value allowed by the collisional rates given by Danby et al. (1988).

^(b)

Because the values for the (4, 4) − (5, 5) metastable inversion transitions are upper limits to the actual T_MB, the modeled curve in the LVG plot is outside the allowed range, and we give a lower limit to the kinetic temperature using the rotational temperature form the LTE plot.

^(c)

The assumed value for the kinetic temperature for positions were there are no NH₃ observations is the average of the T_kin from similar positions.

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