Table 1: $\beta$ -model fits for various sectors of A2218, errors are 90 per cent confidence. Sectors are defined anticlockwise from the positive Y-axis.
Sector $\beta$ r_c $\chi^2$ /d.o.f.

(arcmin)

Full
$\rm0.63^{+0.01}_{-0.01}$ $0\hbox{$.\mkern-4mu^\prime$ }95^{+0\hbox{$.\mkern-4mu^\prime$ }02}_{-0\hbox{$.\mkern-4mu^\prime$ }02}$ 208.8/168

0-90 $\rm0.63^{+0.01}_{-0.01}$ $1\hbox{$.\mkern-4mu^\prime$ }04^{+0\hbox{$.\mkern-4mu^\prime$ }05}_{-0\hbox{$.\mkern-4mu^\prime$ }05}$ 140.0/127

90-180 $\rm0.61^{+0.01}_{-0.01}$ $0\hbox{$.\mkern-4mu^\prime$ }98^{+0\hbox{$.\mkern-4mu^\prime$ }04}_{-0\hbox{$.\mkern-4mu^\prime$ }04}$ 275.6/148

180-270 $\rm0.74^{+0.03}_{-0.02}$ $1\hbox{$.\mkern-4mu^\prime$ }21^{+0\hbox{$.\mkern-4mu^\prime$ }07}_{-0\hbox{$.\mkern-4mu^\prime$ }06}$ 86.9/96

270-360 $\rm0.66^{+0.01}_{-0.01}$ $0\hbox{$.\mkern-4mu^\prime$ }87^{+0\hbox{$.\mkern-4mu^\prime$ }04}_{-0\hbox{$.\mkern-4mu^\prime$ }04}$ 161.8/115

**Table 1:** $\beta$ -model fits for various sectors of A2218, errors are 90 per cent confidence. Sectors are defined anticlockwise from the positive Y-axis.
Sector	$\beta$	r_c	$\chi^2$ /d.o.f.
		(arcmin)
Full	$\rm0.63^{+0.01}_{-0.01}$	$0\hbox{$.\mkern-4mu^\prime$ }95^{+0\hbox{$.\mkern-4mu^\prime$ }02}_{-0\hbox{$.\mkern-4mu^\prime$ }02}$	208.8/168
0-90	$\rm0.63^{+0.01}_{-0.01}$	$1\hbox{$.\mkern-4mu^\prime$ }04^{+0\hbox{$.\mkern-4mu^\prime$ }05}_{-0\hbox{$.\mkern-4mu^\prime$ }05}$	140.0/127
90-180	$\rm0.61^{+0.01}_{-0.01}$	$0\hbox{$.\mkern-4mu^\prime$ }98^{+0\hbox{$.\mkern-4mu^\prime$ }04}_{-0\hbox{$.\mkern-4mu^\prime$ }04}$	275.6/148
180-270	$\rm0.74^{+0.03}_{-0.02}$	$1\hbox{$.\mkern-4mu^\prime$ }21^{+0\hbox{$.\mkern-4mu^\prime$ }07}_{-0\hbox{$.\mkern-4mu^\prime$ }06}$	86.9/96
270-360	$\rm0.66^{+0.01}_{-0.01}$	$0\hbox{$.\mkern-4mu^\prime$ }87^{+0\hbox{$.\mkern-4mu^\prime$ }04}_{-0\hbox{$.\mkern-4mu^\prime$ }04}$	161.8/115

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations and data reduction
	3 Gas density distribution
	4 Spatially resolved spectroscopy
	5 Mass analysis
	6 Discussion
	7 Summary and conclusions
	References