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Fig. 1

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Triple systems PLCKG214.6+37.0. Left upper panel: Planck SZ reconstructed map (derived from the Modified Internal Linear Combination Analysis, Hurier et al. 2010), oversampled and smoothed for display purposes. Right upper panel: XMM-Newton wavelet filtered image in the [0.5–2.5]  keV range (Sect. 2.2). The three components of PLCKG214.6+37.0 are marked with circles (with radius R500, see Table 1) and indicated with letters as in the text. The X-ray structure visible in the north-east (marked with an asterisk) is likely associated with the active galaxy SDSSJ090912.15 + 144613.7, with a spectroscopic redshift z = 0.767. Left lower panel: Raw MOS count rate (counts s-1) image in the [0.5–2.5]  keV range, corrected for vignetting. The black circles mark the point sources detected by our algorithm, which we masked during the analysis (Sect. 2.2). The pixel size in this image is 4.35″. Right lower panel: SDSS r-band image of the PLCKG214.6+37.0 field. In all panels, north is up and east to the left, and we overlay X-ray contours, computed on the wavelet-filtered image logarithmically spaced starting from the level where a connection is seen between all components (Sect. 3.4).

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