Spitzer spectral line mapping of the HH211 outflow

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Table 4:

Physical properties of the atomic/ionic line component.
Position	Offsets	[SI]	[FeII]/[SI]	[SiII]/[FeII]	$\dot{M}$ ([SI])^a,b	$n_{\rm H}^{b,c}$
	( $^{\prime\prime}$ )	(10^-13 Watt cm^-2 sr^-1)			(10 $^{-7}~M_{\odot}$ yr^-1)	(10⁵ cm^-3)
R1+R2	[-19.3, 15.1]	5.34 $\pm$ 0.13	0.92 $\pm$ 0.04	2.18 $\pm$ 0.51	0.4-3.4	0.21-1.61
LL1	[-6.5, 8.6]	6.24 $\pm$ 0.16	0.60 $\pm$ 0.02	1.77 $\pm$ 0.82	0.4-4.1	0.24-1.88
LL2	[6.3, 2.0]	7.49 $\pm$ 0.19	0.35 $\pm$ 0.01	1.95 $\pm$ 0.93	0.7-4.9	0.29-2.91
B2+B3	[31.9, -11.0]	16.1 $\pm$ 0.41	0.37 $\pm$ 0.01	2.14 $\pm$ 0.42	1.3-10.5	0.62-4.9

Notes. ^(a) $\dot{M}$ is proportional to ( $V_{\rm jet}$ /100 km s^-1) $\times$ (10.5 $\hbox {$^{\prime \prime }$ }$ / $l_{\rm t}$ ) and is not corrected for postshock compression. ^(b) values calculated for collisions with electrons at T = 3000 K (lower value) and T = 700 K (upper value); including collisions with hydrogen for $n({\rm H})=10^4$ cm^-3 would decrease the minimum and maximum values by a factor of $\sim$ 2 and 4, respectively. ^(c) average proton density assuming an emitting volume of 10.5 $\hbox{$^{\prime\prime}$ }\times 1\hbox{$^{\prime\prime}$ }\times 1\hbox{$^{\prime\prime}$ }$ .

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