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Table 1

X-ray point sources in the direction of HESS J1818−154.

No. RA Dec Name Counts1 N H 2 Γ or kT3 F X 4 p-value5 Class6
(XMMU) (1022 cm-2) (–/keV) 10-14 erg cm-2 s-1
1 18h17m44s –15°27′33 7 J181744-152733.7 1832 52.4 ± 3.9 0.95 HEXT
2 18h17m46s –15°24′18 9 J181746-152418.9 494 1.8 ± 0.3 0.88 STAR
3 18h17m48s –15°25′57 0 J181748-152557.0 128 <1.9 1.1 ± 0.6 0.39 HGAL
4 18h17m55s –15°25′59 0 J181755-152559.0 350 <0.23 1.3 ± 0.4 0.59 STAR
5 18h18m07s –15°29′55 0 J181807-152955.0 152 <0.95 1.1 ± 0.7 0.85 HGAL

Notes. All quoted uncertainties correspond to the 1σ confidence interval; The energy range of the fit is 0.5–10.0 keV;

(1)

number of excess counts summed over all three EPIC cameras;

(2)

hydrogen column density. The “<”-sign indicates 99% confidence upper limits;

(3)

power-law photon index (Γ) or black-body temperature (kT), depending on which model yielded the better fit;

(4)

observed (absorbed) energy flux (0.5–10.0 keV) derived from the best-fit model;

(5)

fit probability;

(6)

assigned source class (see text): hard extragalactic (HEXT), hard galactic (HGAL), soft galactic (STAR).

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