A search for distant X-ray galaxy clusters

(2) Liverpool John Moores University; (3) University of Chicago; (4) Northwestern University); A.K. Romer (4); B. Holden (3); C.A. Collins (2); D.J. Burke (1); M.P. Ulmer (4) ((1) Durham University; R.C. Nichol (3); R.M. Sharples (1)

arxiv: astro-ph/9512028 · v1 · submitted 1995-12-06 · 🌌 astro-ph

A search for distant X-ray galaxy clusters

D.J. Burke (1) , C.A. Collins (2) , R.C. Nichol (3) , A.K. Romer (4) , B. Holden (3) , R.M. Sharples (1) , M.P. Ulmer (4) ((1) Durham University , (2) Liverpool John Moores University

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(3) University of Chicago (4) Northwestern University)

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keywords clustersdistantx-raygalaxysearchanalysisarchiveband

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We report on the progress of our search for serendipitous distant X-ray galaxy clusters in the ROSAT PSPC pointed observations archive. The initial aim of our work is to measure the X-ray luminosity function of clusters down to 4 x 10^-14 erg cm^-2 s^-1 and so test the claims of cluster evolution at moderate redshifts. We have R band images and spectroscopy for 45 extended sources detected in 50 of the 100 deepest southern fields. A preliminary analysis suggests we cover a range of distances, from nearby clusters to possible distant clusters, z \simeq 1.0.

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A search for distant X-ray galaxy clusters

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