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Star Formation Rates and Metallicities of K-selected Star Forming Galaxies at z~2
Masao Hayashi, Kentaro Motohara, Kazuhiro Shimasaku +7
We present spectroscopy of 15 star-forming BzK galaxies (sBzKs) with K(AB)<23 in the Subaru Deep Field, for which Halpha and some other emission lines are detected in 0.9 to 2.3 mi…
Subaru Weak Lensing survey -- II: Multi-object Spectroscopy and Cluster Masses
Takashi Hamana, Satoshi Miyazaki, Nobunari Kashikawa +4
We present the first results of a MOS campaign to follow up cluster candidates located via weak lensing. Our main goals are to search for spatial concentrations of galaxies that ar…
Strange filamentary structures ("fireballs") around a merger galaxy in the Coma cluster of galaxies
M. Yoshida, M. Yagi, Y. Komiyama +6
We found an unusual complex of narrow blue filaments, bright blue knots, and H-alpha emitting filaments and clouds, which morphologically resembled a complex of ``fireballs,'' exte…
Dark Matter Substructure in Lensing Galaxies
Masashi Chiba, Takeo Minezaki, Kaiki T. Inoue +3
To set useful limits on the abundance of small-scale dark matter halos (subhalos) in a galaxy scale, we have carried out mid-infrared imaging and integral-field spectroscopy for a…
Overdensity of i'-Dropout Galaxies in the Subaru Deep Field: A Candidate Protocluster at z ~ 6
Kazuaki Ota, Nobunari Kashikawa, Matthew A. Malkan +5
We investigate the sky distribution of z ~ 6 Lyman break galaxies selected as i'-dropouts having i' - z' > 1.45 down to z' < 26.5 in the Subaru Deep Field (SDF). We discover 37 i'-…
The Overdense Environment of a Large Lyman-alpha Nebula at z~2.7
M. K. M. Prescott, N. Kashikawa, A. Dey +1
Large nebulae (>50 kpc) emitting strongly in Lya (also known as Lya ``blobs'') are likely signposts of ongoing massive galaxy formation. The relative rarity of these sources and th…