XMM-Newton Observation of NGC1407/1400 Complex
Physics and Astronomy
The nearby group centered on the elliptical galaxy NGC 1407 is one of the darkest systems in the local universe. This system is also notable for having a second-brightest galaxy (NGC 1400) with a large velocity difference (at least 1100 km/s) with respect to NGC 1407. Our analysis of XMM-Newton data of this group suggests a potentially violent collision between NGC1407 and NGC1400. An region of enhanced brightness associated with NGC1400 is also found to the direction of NGC 1407, which is probably a cold front.
XMM-Newton Observation of NGC1407/NGC1400 Complex. Su, Y., Gu, L., White, R., III, Irwin, J., Million, E., & Wong, K.-W. 2011, American Astronomical Society, HEAD Meeting, 12, No.39.20.