Distribution and evolution of high-z galaxies
Distribution and evolution of high-z galaxies and AGNs from a multi-wavelength survey
K. Sekiguchi1, M. Akiyama1, H. Furusawa1, J. Furusawa1, T. Kodama2, M. Ouchi3, T. Yamada2, SXDS Team4
1 Subaru Telescope, National Astronomical Observatory of Japan
2 Division of Optical and Infrared Astronomy, National Astronomical Observatory of Japan
3 Space Telescope Science Institute
4http://www.naoj.org/Science/SubaruProject/SXDS/who.html
We report an on-going blank-field multi-wavelength deep and wide survey of the Subaru/XMM-Newton Deep Survey Field (SXDF). The SXDF has been the focus of wide range of multi-wavelength observing programs spanning the X-ray to the radio. These surveys cover a large enough area (the initial optical imaging covers ~ 1.3 deg2) and depth (i.e. volume) so that they are not affected by large-scale structures (which exist on tens of Mpc scales) and allow us to study the distribution and evolution of high-z galaxies and AGNs, and thus constrain theories for their formation. It is expected our extensive multi-wavelength dataset will provide photometric redshift information accurate to dz £ 0.1 over a wide range of redshift, as well as detailed spectral energy distributions for the vast majority of the objects in the field.
In this paper, we present our initial results: 1) discovery of the primeval Large Scale Structure (LSS) at z ~ 6; 2) indications for downsizing of galaxy formation at z ~ 1; 3) identifications of passively evolving systems and evidence for early formation and the passive evolution of present-day early-type galaxies; 4) discovery of a large number of optically obscured QSOs. We also, report on the progress of multi-wavelength observations from ultra-deep radio imaging with the VLA, sub-mm mapping by the Balloon-borne Large Area Sub-millimeter Telescope (BLAST) and SCUBA, deep mid-infrared observations from Spitzer Space Telescope, deep near-infrared imaging with the UK Infrared Telescope, and deep X-ray observations with the XMM-Newton observatory. Finally, we mention roles of the next generation optical/IR Extremely Large Telescope(s) on studies of the formation and evolution of high-z objects.


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On 20 Oct 2005, 17:41.