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Paper: IRAS03158+4227 - a ULIRG in a Widely Separated Pair of Galaxies
Volume: 284, AGN Surveys, IAU Colloquium 184
Page: 215
Authors: Meusinger, Helmut; Stecklum, B.; Brunzendorf, J.
Abstract: Ultra-luminous infrared galaxies (ULIRGs) are claimed to represent the final stages of merging galaxies with nuclei separations of less than a few kpc. We present deep ground-based optical and NIR images and optical spectra of IRAS 03158+4227, one of the most luminous ULIRGs in the IRAS 2Jy sample. Strong evidence is found for the gravitational interaction of IRAS 03158+4227 with a giant Seyfert galaxy separated by at least 70 h50-1 kpc. IRAS 03158+4227 was hitherto considered a system with very small nuclei separation. The use of nuclei separations as a measure of the evolutionary status of mergers is probably more complicated than generally adopted.
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