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We report on XMM-Newton observations of three nearby galaxy pairs,AM0707-273, AM1211-465, and AM2040-674. All six galaxies were previouslyclassified as HII galaxies based on optical and IR spectroscopic analysis. Allgalaxies were detected with XMM-Newton and each member was isolated andanalyzed independently. The X-ray spectra reveal strong evidence of AGNactivity in the NE member of AM1211-465 pair. We measured a luminosity of1.94(+0.11/-0.15)x10^42 erg/s in the 2-10 keV band and the presence of aneutral FeK_alpha line with a confidence level of 98.8%. The high nH value,2.2+/-0.2x10^22 cm^-2, would explain the misclassification of the source.Marginal evidence of AGN nature was found in the X-ray spectra of AM1211-465SWand AM0707-273E. The X-ray emission of the three remaining galaxies can beexplained by starburst activity.

XMM-Newton view of galaxy pairs: activation of quiescent black holes?