XMM-Newton three-colour image (red 0.2–1.0 keV, green 1.0–2.0 keV, blue 2.0–4.5 keV), continuum-subtracted LGGS Hα, [S ii], and [O iii] images, and an [S ii]/Hα ratio image with XMM-Newton 3σ positional error circle (solid). The dashed circle shows the extraction region for the optical emission. If no dashed circle is shown, the X-ray error circle was used. The shown area has a size of ~1′ × 1′. The label gives the source number of the XMM-Newton catalogue (SPH11), followed by the coordinates. The positions of all detected XMM-Newton sources are marked in the XMM-Newton images (left) with crosses.
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