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Table 2

X-ray counts and hardness ratio.

Object X-ray counts Chandra/XMMa HR b
0.57.0 keV 0.52.0 keV 2.07.0 keV

NDWFS J1427+3522 <6.4 <5.0 <1.4
RD J1148+5253 3.3 0.9 2.4 0.45
′′ c <71.3 <57.9 <13.4
SDSS J01290035 c <1.3 <1.1 <0.2
SDSS J10440125 c 22.9 19.2 3.1 0.72
SDSS J0836+0054 21.9 17.8 3.0 0.71
SDSS J0002+2550 5.8 5.8 <3.0 <0.32
SDSS J0840+5624 4.8 3.8 1.0 0.58
SDSS J00050006 18.4 16.6 1.6 0.82
NDWFS J1425+3254 <6.7 <5.3 <1.4
SDSS J1335+3533 4.6 3.8 0.8 0.56
SDSS J1411+1217 11.9 9.9 2.0 0.66
PSO J328.733909.5076 c <28.2 <22.9 <5.3
SDSS J2053+0047 <6.6 <4.7 <1.9
ULAS J0148+0600 c <10.1 <8.2 <1.9
PSO J007.0273+04.9571 <33.2 <28.2 <5.0
CFHQS J02160455 c <65.2 <53.0 <12.2
SDSS J1306+0356 125.4 87.3 38.1 0.39
SDSS J1630+4012 15.3 10.8 4.5 0.41
SDSS J03030019 <3.8 <3.0 <0.8
SDSS J1602+4228 25.7 21.8 3.8 0.70
HSC J22160016 c <3.0 <2.4 <0.6
SDSS J1048+4637 2.9 2.9 <3.0 <0.02
SDSS J1623+3112 6.0 4.0 2.0 0.33
SDSS J0100+2802 12.0 10.7 0.7 0.88
′′ c 154.5 127.9 25.8 0.66
ATLAS J025.682133.4627 d 13.0 10.4 1.6 0.73
SDSS J1030+0524 6.0 6.0 <3.0 <0.33
′′ c 148.0 128.8 19.0 0.74
SDSS J1148+5251 36.8 25.9 10.9 0.41
′′ c 4.3 3.1 1.2 0.44
CFHQS J02100456 c <32.8 <26.7 <6.1
ULAS J1120+0641 5.7 4.0 1.7 0.40
′′ c 34.0 30.7 3.1 0.82

Notes.

(a)

Errors on the X-ray counts were computed according to Tables 1 and 2 of Gehrels (1986) and correspond to the 1σ level in Gaussian statistics. The upper limits are at the 3σ confidence level.

(b)

The hardness ratio is defined as where H and S are the counts in the hard (2.0–7.0 keV) and soft (0.5–2.0 keV) bands. We calculated errors at the 1σ level for the hardness ratio following the method described in Sect. 1.7.3 of Lyons (1991).

(c)

Sources observed by XMM for which we provide EPIC pn information.

(d)

Source observed by Swift-XRT.

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