Abstract

We observed two ULIRGs, IRAS 20551–4250 and IRAS 23128–5919 with the X-ray satellite ASCA. Both of them are merger, 100μm bright galaxies with LIR ~ 1012L⊙ and have a “warm” IRAS color (25μm/100μm ≥ 0.2), so the presence of an AGN would be expected.

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