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The object NGC6908 was once thought to be simply a surface-brightnessenhancement in the eastern spiral arm of the nearby spiral galaxy NGC6907.Based on an examination of near-infrared imaging, the object is shown in factto be a lenticular S0(6/7) galaxy hidden in the optical glare of the disk andspiral structure of the larger galaxy. New radial velocities of NGC6908(3,060+/-16 (emission); 3,113+/-73 km/s (absorption)) have been obtained at theBaade 6.5m and the duPont 2.5m telescopes at Las Campanas, Chile placingNGC6908 at the same expansion-velocity distance as NGC6907 (3,190+/-5 km/s),eliminating the possibility of a purely chance line-of-sight coincidence. Theonce-enigmatic asymmetries in the disk and outer spiral structure of NGC6907are now explained as being due to an advanced merger event. Newly discoveredtails and debris in the outer reaches of this galaxy further support the mergerscenario for this system. This pair of galaxies is a rather striking example oftwo objects discovered over 100 years ago, whose true nature was lost untilmodern detectors operating at infrared wavelengths gave us a new(high-contrast) look. Other examples of embedded merger remnants may alsoreveal themselves in the growing samples of near-infrared imaging of nearbygalaxies; and a pilot study does reveal several other promising candidates forfollow-up observations.

The Curious Case of NGC6908