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Table 4.

Measured fluxes of emission lines and continuum intervals in the X-ray spectrum of DS Tuc.

Quiescent
Flaring
λ (a) Ion logTmax (b) Fobs (c) (Fobs − Fpred (d))/σ Fobs (c) (Fobs − Fpred (d))/σ EMD (e)
Lines

8.42 MgXII MgXII 7.00 5.7 ± 3.5 −1.3 32.4 ± 10.1 −0.3 *
9.17 MgXI 6.80 20.0 ± 3.9 2.6 32.0 ± 9.1 1.7 *
9.23 MgXI 6.80 3.2 ± 3.2 0.6 27.1 ± 8.8 2.8
9.31 MgXI 6.80 14.2 ± 3.4 2.9 7.7 ± 7.8 0.1
10.62 FeXIX FeXIX FeXVII FeXXIV FeXXIV 7.30 1.6 ± 2.6 −1.4 51.9 ± 12.8 −0.0 *
10.98 FeXXIII NeIX NaX FeXXIII FeXVII FeXXIV 7.20 22.8 ± 4.5 3.0 62.1 ± 13.8 0.4 *
11.43 FeXXII FeXXIV FeXVIII 7.20 15.3 ± 4.8 2.2 41.7 ± 13.1 1.1 *
11.74 FeXXIII 7.20 0.8 ± 2.7 −2.0 27.1 ± 12.6 −0.7 *
11.77 FeXXII 7.10 13.3 ± 4.5 1.1 20.8 ± 12.5 −0.1 *
12.13 FeXVII NeX NeX 6.75 106.4 ± 8.4 1.5 201.8 ± 18.6 −0.2 *
12.28 FeXXI FeXVII 7.05 20.9 ± 6.0 −1.3 54.0 ± 14.8 −0.0 *
12.83 FeXX FeXX FeXX 7.05 27.8 ± 5.5 1.2 41.6 ± 12.8 0.2 *
13.45 FeXIX NeIX FeXIX FeXXI 6.60 57.1 ± 7.2 0.2 127.2 ± 15.6 0.5 *
13.52 NeIX FeXIX 6.95 30.3 ± 6.5 1.5 34.9 ± 13.4 −0.4
13.70 NeIX 6.55 30.5 ± 6.2 1.7 48.0 ± 12.6 −0.0
13.74 FeXIX 6.95 13.1 ± 4.7 2.3 5.9 ± 7.6 0.2
13.82 FeXIX FeXVII 6.90 12.3 ± 4.0 −0.3 35.8 ± 9.2 1.5
14.20 FeXVIII FeXVIII FeXVIII 6.90 42.4 ± 4.8 −0.4 65.0 ± 9.7 −0.3 *
14.37 FeXVIII FeXVIII FeXVIII 6.90 15.0 ± 3.8 0.0 28.0 ± 8.7 0.6 *
14.54 FeXVIII FeXVIII FeXVIII 6.90 5.6 ± 3.5 −2.1 23.8 ± 8.6 0.5 *
15.01 FeXVII 6.75 97.9 ± 5.9 0.9 152.9 ± 11.8 0.2 *
15.18 FeXIX OVIII OVIII 6.50 19.7 ± 4.9 1.4 42.5 ± 10.6 1.2 *
15.26 FeXVII 6.75 26.2 ± 4.7 −0.1 8.2 ± 8.7 −4.0 *
16.01 FeXVIII OVIII OVIII 6.50 34.1 ± 4.5 −1.6 100.0 ± 10.4 0.9 *
16.07 FeXVIII 6.85 35.7 ± 4.5 3.8 40.0 ± 9.0 1.4 *
16.78 FeXVII 6.75 49.5 ± 4.6 −1.4 109.1 ± 10.3 1.4 *
17.05 FeXVII 6.75 76.3 ± 6.6 0.7 215.8 ± 15.7 6.0
17.10 FeXVII 6.70 59.9 ± 7.7 0.3 34.5 ± 14.0 −4.6
17.62 FeXVIII 6.90 7.9 ± 3.0 −1.5 8.7 ± 6.5 −1.6 *
18.63 OVII 6.35 9.8 ± 3.1 1.4 17.2 ± 7.4 1.0 *
18.97 OVIII OVIII 6.50 213.9 ± 8.8 0.2 516.6 ± 18.8 −0.1 *
21.60 OVII 6.30 46.4 ± 7.1 0.5 74.1 ± 14.0 0.2 *
21.81 OVII 6.30 0.7 ± 3.4 −1.8 14.2 ± 11.5 0.4
22.10 OVII 6.30 37.8 ± 6.8 2.5 28.8 ± 11.5 −0.1
24.78 NVII NVII 6.30 25.4 ± 5.3 −0.8 72.1 ± 12.0 0.5 *
33.73 CVI CVI 6.15 33.1 ± 8.9 −0.8 98.4 ± 19.2 0.5 *

Continuum

[8.49 ÷ 8.90] 7.75 25.5 ± 4.2 0.7 192.1 ± 11.6 −0.0 *
[29.70 ÷ 30.36] 6.55 27.9 ± 11.4 −0.3 165.3 ± 21.3 0.1 *

Notes.

(a)

Wavelengths (Å).

(b)

Temperature (K) of maximum emissivity.

(c)

Observed fluxes (10−6 ph s−1 cm−2) with uncertainties at the 68% confidence level.

(d)

Predicted fluxes considered here those computed in the low density limit.

(e)

Flux measurements selected for the EMD reconstruction.

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