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Table 2:

List of emission lines detected in the RGS spectrum of NGC 5252.

Identification
Eca Lb $\Delta v$c $v_{\rm sys}$d
  (eV) (1040 erg s-1)    

C VI Ly-${\alpha}$
$367 \pm 5$ $3 \pm^{11}_{2}$ $800 \pm 400$ 70

O VII He-${\alpha}$ (f)
$560.4 \pm 0.2$ $2.0 \pm^{0.8}_{0.9}$ $-370 \pm 110$ 110

O VII He-${\alpha}$ (i)
$E_{\rm c} (f) + 7.7$ <0.9    

O VII He-${\alpha}$ (r)
$E_{\rm c} (f) + 13.0$ <1.4    

O VIII Ly-${\alpha}$
$654.0 \pm^{0.7}_{1.2}$ $0.6 \pm 0.4$ $300 \pm^{300}_{600}$ 130

Notes.  (a) Measured line energy; (b) intrinsic line luminosity; (c) difference between the measured line energy and the laboratory energy expressed in km s-1. Only statistical errors on this measurements are quoted; (d) systematic error on $\Delta v$ expressed in km s-1 due to residual uncertainties in the RGS aspect solution ($\simeq $8 mÅ).


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