Online material

Appendix A: Detected sources in the fields of NGC 4756 and NGC 5328

Besides the two galaxies themselves, the detection algorithm detected 68 and 32 sources in the fields of NGC 4756 and NGC 5328, respectively. For the latter galaxy field, we have excluded a region of 1′ radius around NGC 5328, where the sources detected most likely represent merely small fluctuations in the extended emission. We used a broad energy band 0.5–4.5 keV and a single conversion factor to convert the detected counts into flux, corresponding to a power-law model with Γ = 1.7 and N_H = 3 × 10²⁰ cm^-2 (see 2XMM catalog). In Tables A.1 and A.2 we give the full list of detected sources, excluding NGC 4756 and NGC 5328 themselves (see Table 2). We give the counts and average flux derived from the three instruments combined, when available. For sources detected in only a subset of the instruments, we give the counts and fluxes from the specific instrument, as noted in the tables. Identifications with optical objects is given when available, or a comment is provided when the positional coincidence indicates a clear association.

© ESO, 2012