Investigating the nature of the 2.4 h-period eclipsing cataclysmic variable W2 in 47 Tuc

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Table 2.

W2 unabsorbed fluxes and luminosities (0.3–10 keV) for each observation.

Obs. ID ^(a)	F_unabs	L_X
	(10⁻¹⁴ erg cm⁻² s⁻¹)	(10³² erg s⁻¹)
78*	6 ± 2	1.5 ± 0.5
953	1.4 $_{- 0.3}^{+ 0.5}$ $^{+0.5}_{-0.3}$	0.34 $_{- 0.07}^{+ 0.12}$ $^{+0.12}_{-0.07}$
955	6.2 $_{- 0.7}^{+ 0.8}$ $^{+0.8}_{-0.7}$	1.5 ± 0.2
956*	6.5 $_{- 2.2}^{+ 2.0}$ $^{+2.0}_{-2.2}$	1.6 ± 0.5
2735	6.4 $_{- 0.4}^{+ 0.5}$ $^{+0.5}_{-0.4}$	1.5 $_{- 0.09}^{+ 0.12}$ $^{+0.12}_{-0.09}$
3384*	8 ± 2	2.0 ± 0.5
2736	5.8 ± 0.4	1.42 ± 0.09
3385*	9 ± 2	2.2 ± 0.5
2737	7.1 $_{- 0.2}^{+ 0.3}$ $^{+0.3}_{-0.2}$	1.73 $_{- 0.05}^{+ 0.07}$ $^{+0.07}_{-0.05}$
3386*	2 ± 1	0.5 ± 0.2
2738	8.4 ± 0.6	2.0 ± 0.1
3387*	2.6 $_{- 0.9}^{+ 1.1}$ $^{+1.1}_{-0.9}$	0.6 $_{- 0.2}^{+ 0.3}$ $^{+0.3}_{-0.2}$
16527	3.9 $_{- 0.4}^{+ 0.6}$ $^{+0.6}_{-0.4}$	0.95 $_{- 0.09}^{+ 0.14}$ $^{+0.14}_{-0.09}$
15747	5.7 ± 0.6	1.4 ± 0.1
16529	4.8 ± 0.7	1.2 ± 0.2
17420	4 ± 1	1.0 ± 0.2
15748	5 ± 1	1.2 ± 0.2
26229	2 ± 1	0.5 ± 0.2
26286	≤2.8 ^(b)	≤0.7 ^(b)

Notes. Fluxes and luminosities have been obtained for the thermal Bremsstrahlung model, having $N_{H}^{47 Tuc + local}$ $N_{\mathrm{H}}^{\mathrm{47\,Tuc + local}}$ and kT fixed at 1.1 × 10²¹ cm⁻² and 10 keV, respectively.

^(a)

Observations with exposure times shorter than the orbital period are marked with an asterisk.

^(b)

Upper limit at 90% c.l.

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