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Table 5

Spectral parameters of the best-fit thermal models to EPIC data of IC 2944/2948 (see Table 2 for definition of errors).

XID N H k T 1 nor m 1 k T 2 nor m 2 k T 3 nor m 3 χ2/d.o.f. (d.o.f.) log    (LBOL)
1022 cm-2 keV 10-3 cm-5 keV 10-3 cm-5 keV 10-3 cm-5 10-13 erg cm-2 s-1 1032 erg s-1 (L⊙)
1 0.19 + (0.32 ± 0.03) 0.153 ± 0.004 5.83 ± 1.50 0.601 ± 0.015 0.50 ± 0.04 1.23 ± 0.04 0.188 ± 0.014 1.57 (274) 6.73 8.10  ±  0.06 5.63 −6.305 ± 0.003
2 0.19 + (0.20 ± 0.03) 0.188 ± 0.004 1.39 ± 0.32 0.77 ± 0.02 0.188 ± 0.010 1.45 (191) 3.64 4.93  ±  0.06 5.43 −6.320 ± 0.005
3 0.19 + (0.06 ± 0.05) 0.154 ± 0.012 0.32 ± 0.18 0.73 ± 0.02 0.102 ± 0.013 1.50 (81) 1.97 2.72  ±  0.06 5.53 −6.679 ± 0.010
4 0.19 + (0.10 ± 0.08) 0.148 ± 0.017 0.61 ± 0.77 0.77 ± 0.03 0.144 ± 0.042 2.38 ± 0.50 0.115 ± 0.018 1.38 (99) 3.73 4.36  ±  0.11 5.31 −6.254 ± 0.011
5 0.19 + (0.39 ± 0.06) 0.045 ± 0.011 1902 ± 32335 0.24 ± 0.02 0.58 ± 0.30 0.96 (89) 0.79 1.19  ±  0.03 5.14 −6.647 ± 0.011
6 0.19 + (1.42 ± 0.14) 21.7 ± 11.7 0.156 ± 0.008 0.88 (111) 2.17
6− 2.15 ± 0.27 1.73 ± 0.13 0.059 ± 0.014 0.84 (111) 2.07
7 0.19 + (0. ± 0.34) 0.24 ± 0.06 0.047 ± 0.440 0.99 ± 0.30 0.0086 ± 0.0020 0.94 (62) 0.41 0.62  ±  0.02 4.85 −6.641 ± 0.015
8 0.19 + (0.23 ± 0.11) 0.155 ± 0.024 0.30 ± 0.50 0.61 ± 0.10 0.033 ± 0.011 0.95 (22) 0.44 0.62  ±  0.03 4.77 −6.561 ± 0.022
9 0.19 + (0.38 ± 0.16) 0.22 ± 0.04 0.12 ± 0.32 2.45 ± 0.33 0.043 ± 0.005 0.86 (53) 0.50
9− 0.34 ± 0.04 2.75 ± 0.18 0.027 ± 0.004 1.08 (55) 0.47
10 0.19 + (0.06 ± 0.06) 3.97 ± 0.71 0.046 ± 0.004 1.06 (38) 0.63
10− 0.39 ± 0.08 2.18 ± 0.19 0.023 ± 0.005 1.07 (38) 0.63
11 0.19 + (1.22 ± 0.24)  >14.2 0.37 ± 0.09 1.31 (44) 5.28
11− 1.52 ± 0.39 1.43 ± 0.26 0.088 ± 0.040 1.30 (44) 5.27
12 0.19 + (0. ± 0.04) 3.37 ± 0.42 0.0371 ± 0.0019 1.17 (44) 0.49
12− 0.34 ± 0.07 2.44 ± 0.19 0.021 ± 0.004 1.12 (44) 0.47
13+14 0.36 + (0.96 ± 0.17) 0.25 ± 0.07 1.97 ± 1.27 3.17 ± 0.92 0.0090 ± 0.0014 1.48 (84) 1.12 1.02  ±  0.05 3.40 −4.975 ± 0.021
15 0.19 + (0. ± 0.05) 0.34 ± 0.30 0.0021 ± 0.0030 3.97 ± 0.59 0.0261 ± 0.0017 1.39 (35) 0.39
15− 0.23 ± 0.06 2.17 ± 0.21 0.012 ± 0.002 1.25 (37) 0.38
16 0.19 + (0. ± 0.59) 0.58 ± 0.47 0.003 ± 0.502 4.46 ± 1.10 0.039 ± 0.003 0.59 (30) 0.63
17 0.19 + (0. ± 0.04) 4.59 ± 0.91 0.041 ± 0.003 1.14 (36) 0.61
17− 0.33 ± 0.09) 2.14 ± 0.25 0.019 ± 0.005 1.08 (36) 0.58
30 0.19 + (3.27 ± 0.45)  >13.0 0.180 ± 0.011 0.97 (51) 2.16
30− 5.99 ± 1.32 2.30 ± 0.38 0.19 ± 0.17 0.83 (51) 1.90
31 0.19 + (0.85 ± 0.09) 0.85 ± 0.09 0.047 ± 0.012 1.47 (21) 0.15
35 0.19 + (0.61 ± 0.16) 0.11 ± 0.02 4.88 ± 45.2 1.55 ± 0.16 0.028 ± 0.005 1.06 (26) 0.23
77 0.19 + (0.32 ± 0.07) 0.14 ± 0.02 1.52 ± 3.83 0.56 ± 0.10 0.083 ± 0.046 1.05 (62) 0.82 1.16  ±  0.05 4.89 −6.409 ± 0.017

Notes. The fitted model has the form wabs × wabs ×  ∑ apec, where the first, interstellar absorption was fixed to 1.9 × 1021 cm-2 except for XID 13 (since HD 308829 displays a stronger absorption, with E(B − V) ~ 0.62). A symbol “-” gives the results of the alternative fitting by a power law, with no absorption fixed and the third column corresponding in these cases to the photon index. Fluxes refer to the 0.5−10. keV energy band, luminosities were corrected for the interstellar absorption only, and abundances of the thermal emission component and additional absorption are solar (Anders & Grevesse 1989). When the 1σ confidence interval is asymmetric, the largest value of the 1σ error is here given.

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