Table 3: Galactic column density (from Dickey & Lockman 1990), BMW count rates and fluxes for galaxies in the complete serendipitous sample, ordered by increasing flux.
LEDA name $N_{{\rm H}}$ Count rate F_{0.5 - 2}

(10²⁰ cm^-2) (10^-3 count s^-1) (10^-13 erg cm^-2 s^-1)

0157406 4.9 0.37 $\pm$ 0.07 0.12 $\pm$ 0.02

0068536 2.5 1.11 $\pm$ 0.34 0.32 $\pm$ 0.09

0025825 4.2 1.12 $\pm$ 0.22 0.35 $\pm$ 0.06

0042833 2.0 1.31 $\pm$ 0.23 0.35 $\pm$ 0.05

0028990 0.8 1.50 $\pm$ 0.30 0.36 $\pm$ 0.07

0005323 3.8 1.33 $\pm$ 0.28 0.41 $\pm$ 0.09

0010446 3.1 1.48 $\pm$ 0.24 0.43 $\pm$ 0.06

0057078 2.3 1.63 $\pm$ 0.28 0.44 $\pm$ 0.08

0069338 8.8 1.24 $\pm$ 0.20 0.46 $\pm$ 0.07

0038773 2.0 1.70 $\pm$ 0.11 0.46 $\pm$ 0.03

0001333 4.2 1.55 $\pm$ 0.27 0.48 $\pm$ 0.09

0007289 5.5 1.71 $\pm$ 0.26 0.56 $\pm$ 0.10

0070861 2.6 2.11 $\pm$ 0.38 0.61 $\pm$ 0.12

0018991 5.4 2.18 $\pm$ 0.32 0.70 $\pm$ 0.10

0004117 4.0 2.36 $\pm$ 0.23 0.73 $\pm$ 0.06

0043675 3.9 2.49 $\pm$ 0.37 0.77 $\pm$ 0.12

0002204 1.9 3.23 $\pm$ 0.23 0.87 $\pm$ 0.05

0045318 1.0 3.78 $\pm$ 0.60 0.91 $\pm$ 0.14

0046432 3.2 3.13 $\pm$ 0.66 0.91 $\pm$ 0.20

0047432 2.3 3.61 $\pm$ 0.64 0.97 $\pm$ 0.16

0130966 2.4 4.41 $\pm$ 0.81 1.19 $\pm$ 0.22

0016574 5.9 3.73 $\pm$ 0.51 1.23 $\pm$ 0.17

0005324 3.8 4.34 $\pm$ 0.51 1.35 $\pm$ 0.16

0057728 1.5 5.11 $\pm$ 0.39 1.38 $\pm$ 0.11

0013368 1.4 7.22 $\pm$ 1.41 1.73 $\pm$ 0.24

0029050 0.8 10.20 $\pm$ 0.70 2.45 $\pm$ 0.17

0002362 2.7 9.06 $\pm$ 0.99 2.63 $\pm$ 0.29

0004848 6.1 9.26 $\pm$ 2.43 3.06 $\pm$ 0.66

0063122 7.9 11.02 $\pm$ 1.42 3.97 $\pm$ 0.36

0006367 3.0 14.80 $\pm$ 0.60 4.29 $\pm$ 0.17

0017451 7.5 15.66 $\pm$ 1.72 5.64 $\pm$ 0.72

0028995 4.8 34.20 $\pm$ 2.00 10.94 $\pm$ 0.64

**Table 3:** Galactic column density (from Dickey & Lockman 1990), BMW count rates and fluxes for galaxies in the complete serendipitous sample, ordered by increasing flux.
LEDA name	$N_{{\rm H}}$	Count rate	F_{0.5 - 2}
	(10²⁰ cm^-2)	(10^-3 count s^-1)	(10^-13 erg cm^-2 s^-1)
0157406	4.9	0.37 $\pm$ 0.07	0.12 $\pm$ 0.02
0068536	2.5	1.11 $\pm$ 0.34	0.32 $\pm$ 0.09
0025825	4.2	1.12 $\pm$ 0.22	0.35 $\pm$ 0.06
0042833	2.0	1.31 $\pm$ 0.23	0.35 $\pm$ 0.05
0028990	0.8	1.50 $\pm$ 0.30	0.36 $\pm$ 0.07
0005323	3.8	1.33 $\pm$ 0.28	0.41 $\pm$ 0.09
0010446	3.1	1.48 $\pm$ 0.24	0.43 $\pm$ 0.06
0057078	2.3	1.63 $\pm$ 0.28	0.44 $\pm$ 0.08
0069338	8.8	1.24 $\pm$ 0.20	0.46 $\pm$ 0.07
0038773	2.0	1.70 $\pm$ 0.11	0.46 $\pm$ 0.03
0001333	4.2	1.55 $\pm$ 0.27	0.48 $\pm$ 0.09
0007289	5.5	1.71 $\pm$ 0.26	0.56 $\pm$ 0.10
0070861	2.6	2.11 $\pm$ 0.38	0.61 $\pm$ 0.12
0018991	5.4	2.18 $\pm$ 0.32	0.70 $\pm$ 0.10
0004117	4.0	2.36 $\pm$ 0.23	0.73 $\pm$ 0.06
0043675	3.9	2.49 $\pm$ 0.37	0.77 $\pm$ 0.12
0002204	1.9	3.23 $\pm$ 0.23	0.87 $\pm$ 0.05
0045318	1.0	3.78 $\pm$ 0.60	0.91 $\pm$ 0.14
0046432	3.2	3.13 $\pm$ 0.66	0.91 $\pm$ 0.20
0047432	2.3	3.61 $\pm$ 0.64	0.97 $\pm$ 0.16
0130966	2.4	4.41 $\pm$ 0.81	1.19 $\pm$ 0.22
0016574	5.9	3.73 $\pm$ 0.51	1.23 $\pm$ 0.17
0005324	3.8	4.34 $\pm$ 0.51	1.35 $\pm$ 0.16
0057728	1.5	5.11 $\pm$ 0.39	1.38 $\pm$ 0.11
0013368	1.4	7.22 $\pm$ 1.41	1.73 $\pm$ 0.24
0029050	0.8	10.20 $\pm$ 0.70	2.45 $\pm$ 0.17
0002362	2.7	9.06 $\pm$ 0.99	2.63 $\pm$ 0.29
0004848	6.1	9.26 $\pm$ 2.43	3.06 $\pm$ 0.66
0063122	7.9	11.02 $\pm$ 1.42	3.97 $\pm$ 0.36
0006367	3.0	14.80 $\pm$ 0.60	4.29 $\pm$ 0.17
0017451	7.5	15.66 $\pm$ 1.72	5.64 $\pm$ 0.72
0028995	4.8	34.20 $\pm$ 2.00	10.94 $\pm$ 0.64

Source LaTeX | All tables | In the text

	1 Introduction
	2 The sample
	3 X-ray characterization
	4 The atlas
	5 Optical observations
	6 Comparison with literature
	7 The log N - log S distribution
	8 Conclusions
	References
	Online Material
	Appendix A: Results of optical observations