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Color-Magnitude Sequence in the Clusters at z ~ 1.2 near the Radio Galaxy 3C 324

Terada, Hiroshi; Usuda, Tomonori; Imanishi, Masatoshi +17 more

We have investigated the optical and near-infrared colors of K'-selected galaxies in clusters at z ~ 1.2 near to the radio galaxy 3C 324 using images obtained with the Subaru telescope and archival HST data. The distribution of colors of the galaxies in the cluster region is found to be fairly broad, and it may imply significant scatter in their s…

Subaru First-Light Deep Photometry of Galaxies in A 851 Field

Kobayashi, Naoto; Terada, Hiroshi; Usuda, Tomonori +96 more

We report on the results of optical and near-infrared photometry of the cluster of galaxies A 851 (=CL 0939+4713) carried out as one of the first-light observations of the 8.2 m Subaru telescope on Mauna Kea. Images as sharp as 0.''3 FWHM in K' and 0.''45 in R were obtained in these observations. The 3 sigma limiting magnitudes for points sources …

Tridimensional Spectrophotometric Study of the Extended Emission-Line Regions of the Infrared-Luminous Merger Markarian 266

Yoshida, Michitoshi; Hattori, Takashi; Ishigaki, Tsuyoshi +6 more

An extensive tridimensional spectrophotometric study of the extended emission-line regions of Mrk 266, a merging system of a Seyfert galaxy and a LINER, was performed. We obtained its narrow-band images of Hα , [O III] lambda 5007, and [S II] lambda lambda 6716, 6731 using an imaging Fabry-Perot interferometer with a tunable filter and area spectr…

High-Resolution Near-Infrared Imaging of the Powerful Radio Galaxy 3C 324 at z = 1.21 with the Subaru Telescope

Terada, Hiroshi; Usuda, Tomonori; Imanishi, Masatoshi +18 more

We have obtained high-resolution K^'-band images of the powerful z=1.206 radio galaxy 3C 324 with the Subaru telescope under seeing conditions of 0.^''3-0.^''4. We clearly resolved the galaxy and directly compared it to the optical images obtained with the Hubble Space Telescope. The host galaxy of 3C 324 is revealed …