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2011•Astronomy and AstrophysicsOpen access

An X-ray underluminous cluster of galaxies in the 4Ms CDFS observations

M. Castellano, L. Pentericci, N. Menci, E. Piconcelli, Paola Santini, Sara Salimbeni, Fabrizio Fiore, A. Fontana, A. Grazian, Aldo Romano, D. Trèvese

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Abstract

Aims. We investigate the properties of cluster ClG 0332-2747 at z = 0.734 in the GOODS-South field, which was undetected in the Chandra 2Ms observations. We explore possible scenarios to explain the discrepancy between its low X-ray emission and that expected from the M − LX relation.

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Aims. We investigate the properties of cluster ClG 0332-2747 at z = 0.734 in the GOODS-South field, which was undetected in the Chandra 2Ms observations. We explore possible scenarios to explain the discrepancy between its low X-ray emission and that expected from the M − LX relation.

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Available abstract

Aims. We investigate the properties of cluster ClG 0332-2747 at z = 0.734 in the GOODS-South field, which was undetected in the Chandra 2Ms observations. We explore possible scenarios to explain the discrepancy between its low X-ray emission and that expected from the M − LX relation.

Key concepts: Physics, Astrophysics, Velocity dispersion, Virial mass, Galaxy, Redshift, Cluster (spacecraft), Luminosity

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