Physics
Scientific paper
Feb 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sgyu.conf...61t&link_type=abstract
Studies of Galaxies in the Young Universe with New Generation Telescope, Proceedings of Japan-German Seminar, held in Sendai, Ja
Physics
Scientific paper
Detection of distant superclusters are important not only for constraining the structure formation theories but also for the study of evolution of galaxies in cluster environment. We have been carrying out an imaging survey for distant large-scale structures of galaxies in the field of a rare concentration of 23 QSOs at z=1.1. We already reported the detection of such large-scale (~50 arcmin., or >20 Mpc at z=1.1) structure of faint red galaxies whose colors and magnitudes are consistent with galaxies at the redshift of the QSO concentration using the two-color data taken at the Apache Point Observatory. The near-infrared follow-up observation for three clusters/groups in the area are executed, and the result are consistent with the idea that these three old galaxy concentrations are all at the same redshift of z~1. Recently we succeeded to observe the area using the Suprime-Cam on the Subaru Telescope. The data taken in this run is more than 6 times wider and deeper than the APO data, and covers the central region of the QSO concentration. The recent results from this data are also presented in the talk.
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