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Published online by Cambridge University Press: 25 May 2016
A cluster of galaxies Abell 1674 is a nearby cluster(z=0.106) and an unique sample among Briel & Henry's(1993, A&A 278,379) catalogue. Although it has the largest number of galaxies within the Abell radius, 165, its X-ray luminosity measured in the ROSAT all-sky survey is 5 × 1043erg/s (in 0.5-2.5keV), about one order of magnitude lower than the brightest one.