Clusters of galaxies among ROSAT blank field sources

arxiv: astro-ph/0105430 · v1 · submitted 2001-05-24 · 🌌 astro-ph

Clusters of galaxies among ROSAT blank field sources

I. Cagnoni (1 , 2) , M. Elvis , (2) , D.-W. Kim (2) , P. Mazzotta (2) , J.-S. Huang(2) , A. Celotti(1) ((1) SISSA-ISAS

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Trieste Italy; (2) SAO Cambridge USA)

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keywords highclusterssourcesgalaxiesredshiftselectingableblank

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We present here an efficient method for selecting high luminosity and massive high redshift clusters of galaxies, crucially important tools in cosmology. By selecting bright and extremely X-ray loud (high F(X)/F(V)) sources, we were able to identify 2 high redshift (z=0.45 and z=0.89) clusters so far and we have evidence for at least one more candidate at 0.4<z<1.1 out of a total of 16 selected sources.

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Clusters of galaxies among ROSAT blank field sources

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