Table 3: Source extraction and low background screening process: (1) an annulus with an inner radius of 1' and an outer radius 5' centered on the source position was used as reference area for the screening. The data were binned with 10 s; (2) coordinates in J2000; (3) extraction radius for the source; (4) energy range considered for the screening; (5) rejection threshold for screening; (6) for annular background areas the inner and the outer radius are provided. (7) background corrected count rate in the energy range of 0.3-12.0 keV for pn and 0.5-10.0 keV for MOS, respectively; (8) accumulated exposure time.
Exp. Source extraction Screening⁽¹⁾ Background extraction Net source

Nr. RA⁽²⁾ Dec⁽²⁾ r⁽³⁾ Energy⁽⁴⁾ CR⁽⁵⁾ RA⁽²⁾ Dec⁽²⁾ r⁽⁶⁾ CR⁽⁷⁾ T⁽⁸⁾

[h:m:s] [d:m:s] ['] [keV] [s^-1] [h:m:s] [d:m:s] ['] [ $10^{-2} ~\rm s^{-1}$ ] [s]

1 10:04:20.29 +05:12:59.6 0.30 0.3-12.0 2.0 10:04:14.47 +05:13:22.1 0.6 3.57 $\pm$ 0.21 8815

2 10:04:20.33 +05:12:58.6 0.30 0.5-10.0 0.5 Source Source 1.0-2.0 0.71 $\pm$ 0.08 10 966

3 10:04:20.29 +05:12:59.6 0.30 0.5-10.0 0.5 Source Source 1.0-2.0 0.53 $\pm$ 0.07 11 009

6
21:14:52.45 +06:07:41.6 0.30 0.3-12.0 10. 21:14:57.25 +06:08:06.6 0.6 11.1 $\pm$ 0.34 10 507

7 21:14:52.42 +06:07:40.7 0.30 0.5-10.0 2.0 Source Source 1.0-2.5 3.25 $\pm$ 0.16 13 287

8 21:14:52.58 +06:07:40.7 0.30 0.5-10.0 2.0 Source Source 1.0-2.5 2.99 $\pm$ 0.15 13 248

10
15:36:38.43 +54:33:32.3 0.35 0.3-12.0 7.0 15:36:36.14 +54:32:27.3 0.6 14.2 $\pm$ 0.29 20 031

11 15:36:38.37 +54:33:31.8 0.30 0.5-10.0 3.0 Source Source 0.8-1.4 4.01 $\pm$ 0.13 26 523

12 15:36:38.31 +54:33:32.9 0.30 0.5-10.0 3.0 Source Source 0.8-1.4 4.03 $\pm$ 0.13 26 516

**Table 3:** Source extraction and low background screening process: (1) an annulus with an inner radius of 1' and an outer radius 5' centered on the source position was used as reference area for the screening. The data were binned with 10 s; (2) coordinates in J2000; (3) extraction radius for the source; (4) energy range considered for the screening; (5) rejection threshold for screening; (6) for annular background areas the inner and the outer radius are provided. (7) background corrected count rate in the energy range of 0.3-12.0 keV for pn and 0.5-10.0 keV for MOS, respectively; (8) accumulated exposure time.
Exp.	Source extraction	Screening⁽¹⁾	Background extraction	Net source
Nr.	RA⁽²⁾	Dec⁽²⁾	r⁽³⁾	Energy⁽⁴⁾	CR⁽⁵⁾	RA⁽²⁾	Dec⁽²⁾	r⁽⁶⁾	CR⁽⁷⁾	T⁽⁸⁾
	[h:m:s]	[d:m:s]	[']	[keV]	[s^-1]	[h:m:s]	[d:m:s]	[']	[ $10^{-2} ~\rm s^{-1}$ ]	[s]
1	10:04:20.29	+05:12:59.6	0.30	0.3-12.0	2.0	10:04:14.47	+05:13:22.1	0.6	3.57 $\pm$ 0.21	8815
2	10:04:20.33	+05:12:58.6	0.30	0.5-10.0	0.5	Source	Source	1.0-2.0	0.71 $\pm$ 0.08	10 966
3	10:04:20.29	+05:12:59.6	0.30	0.5-10.0	0.5	Source	Source	1.0-2.0	0.53 $\pm$ 0.07	11 009
6	21:14:52.45	+06:07:41.6	0.30	0.3-12.0	10.	21:14:57.25	+06:08:06.6	0.6	11.1 $\pm$ 0.34	10 507
7	21:14:52.42	+06:07:40.7	0.30	0.5-10.0	2.0	Source	Source	1.0-2.5	3.25 $\pm$ 0.16	13 287
8	21:14:52.58	+06:07:40.7	0.30	0.5-10.0	2.0	Source	Source	1.0-2.5	2.99 $\pm$ 0.15	13 248
10	15:36:38.43	+54:33:32.3	0.35	0.3-12.0	7.0	15:36:36.14	+54:32:27.3	0.6	14.2 $\pm$ 0.29	20 031
11	15:36:38.37	+54:33:31.8	0.30	0.5-10.0	3.0	Source	Source	0.8-1.4	4.01 $\pm$ 0.13	26 523
12	15:36:38.31	+54:33:32.9	0.30	0.5-10.0	3.0	Source	Source	0.8-1.4	4.03 $\pm$ 0.13	26 516

Source LaTeX | All tables | In the text

	1 Introduction
	2 Optical and previous X-ray studies
	3 Observations and data reduction
	4 X-ray spectral analysis
	5 Spectral energy distribution
	6 Discussion
	7 Conclusions
	References