Deep- and Wide-field K-band Imaging of the Subaru Deep Field: Implications for Galaxy Formation at z˜2 ^{1}

Details Deep- and Wide-field K-band Imaging of the Subaru Deep Field: Implications for Galaxy Formation at z˜2 ^{1} Deep- and Wide-field K-band Imaging of the Subaru Deep Field: Implications for Galaxy Formation at z˜2 ^{1}

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..399..274m&link_type=abstract

Panoramic Views of Galaxy Formation and Evolution ASP Conference Series, Vol. 399, proceedings of the conference held 11-16 Dece

Astronomy and Astrophysics

Astronomy

2

Scientific paper

We have been carrying out K-band wide-field and deep imaging of the Subaru Deep Field (SDF) using WFCAM on UKIRT. The overlap with the optical images exceeds
700 arcmin^2 with the a limiting magnitude of ˜23.5AB. The K-band number counts of pBzKs show a "knee" around 20.5AB, which suggests the deficit of <10^{11}M_{&sun;} passive galaxies at z˜1.5. This can be explained by the down-sizing evolution of galaxies, and fraction of galaxies are still under formation phase at z˜ 1.5.

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