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Unusual Long and Luminous Optical Transient in the Subaru Deep Field
Yuji Urata, Patrick P. Tsai, Kuiyun Huang +8
We present observations of SDF-05M05, an unusual optical transient discovered in the Subaru Deep Field (SDF). The duration of the transient is > ~800 d in the observer frame, and t…
A Ly-alpha Emitter with an Extremely Large Rest-frame Equivalent Width of ~900A at z=6.5: A Candidate of Population III-dominated Galaxy?
Nobunari Kashikawa, Tohru Nagao, Jun Toshikawa +13
We have identified a very interesting Ly-alpha emitter, whose Ly-alpha emission line has an extremely large observed equivalent width of EW_0=436^{+422}_{-149}A, which corresponds…
The Stellar Population and Star Formation Rates of z~1.5-1.6 [O II] Emitting Galaxies Selected from Narrow-Band Emission-Line Surveys
Chun Ly, Matthew A. Malkan, Nobunari Kashikawa +5
We present the first detailed study of the stellar populations of star-forming galaxies at z~1.5, which are selected by their [O II] emission line, detected in narrow-band surveys.…
The Galaxy Luminosity Functions down to M_R=-10 in the Coma Cluster
Hitomi Yamanoi, Yutaka Komiyama, Masafumi Yagi +6
We derived the luminosity function (LF) of dwarf galaxies in the Coma Cluster down to M_R=-10 at three fields located at the center, intermediate, and outskirt. The LF (-19<M_R<-10…
A Search for z=7.3 Lyα Emitters behind Gravitationally Lensing Clusters
Kazuaki Ota, Johan Richard, Masanori Iye +3
We searched for z=7.3 Lya emitters (LAEs) behind two lensing clusters, Abell 2390 and CL 0024, with the Subaru Telescope Suprime-Cam and a narrowband NB1006 (FWHM ~ 21 nm centered…
Discovery of a protocluster at z~6
Jun Toshikawa, Nobunari Kashikawa, Kazuaki Ota +10
We report the discovery of a protocluster at z~6 containing at least eight cluster member galaxies with spectroscopic confirmations in the wide-field image of the Subaru Deep Field…