Browsing by Author "Lerchster, M."

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    Distant clusters of galaxies in a deep XMM-Newton observation
    (2013) Hoon, A. de; Lamer, G.; Schwope, A.; Mühlegger, M.; Fassbender, R.; Böhringer, H.; Lerchster, M.; Nastasi, A.; Šuhada, R.; Rosati, P.; Pierini, D.; Santo, J. S.; Quintana Godoy, Hernán
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    Distant galaxy clusters in a deep XMM-Newton field within the CFTHLS D4
    (2013) de Hoon, A.; Lamer, G.; Schwope, A.; Muehlegger, M.; Fassbender, R.; Boehringer, H.; Lerchster, M.; Nastasi, A.; Suhada, R.; Verdugo, M.; Dietrich, J. P.; Brimioulle, F.; Rosati, P.; Pierini, D.; Santos, J. S.; Quintana, H.; Rabitz, A.; Takey, A.
    Aims. The XMM-Newton distant cluster project (XDCP) aims at the identification of a well defined sample of X-ray selected clusters of galaxies at redshifts z >= 0.8. As part of this project, we analyse the deep XMM-Newton exposure covering one of the CFHTLS deep fields to quantify the cluster content. We validate the optical follow-up strategy as well as the X-ray selection function.
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    First simultaneous optical/near-infrared imaging of an X-ray selected, high-redshift cluster of galaxies with GROND The galaxy population of XMMU J0338.7+0030 at z=1.1
    (2012) Pierini, D.; Suhada, R.; Fassbender, R.; Nastasi, A.; Boehringer, H.; Salvato, M.; Pratt, G. W.; Lerchster, M.; Rosati, P.; Santos, J. S.; de Hoon, A.; Kohnert, J.; Lamer, G.; Mohr, J. J.; Muehlegger, M.; Quintana, H.; Schwope, A.; Biffi, V.; Chon, G.; Giodini, S.; Koppenhoefer, J.; Verdugo, M.; Ziparo, F.; Afonso, P. M. J.; Clemens, C.; Greiner, J.; Kruehler, T.; Yoldas, A. Kuepcue; Olivares E, F.; Rossi, A.; Yoldas, A.
    Context. The XMM-Newton Distant Cluster Project is a serendipitous survey for clusters of galaxies at redshifts z >= 0.8 based on deep archival XMM-Newton observations. X-ray sources identified as extended are screened against existing optical all-sky surveys for galaxies, in case of candidate high-z clusters followed up with imaging at 4 m-class telescopes and, ultimately, multi-object spectroscopy at 8 m-class telescopes. Low-significance candidate high-z clusters are followed up with the seven-channel imager GROND (Gamma-Ray Burst Optical and Near-Infrared Detector) that is mounted at a 2 m-class telescope. Its unique capability of simultaneous imaging in the g', r', i', z', J, H, Ks bands enables the use of the photometric redshift technique.
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