Lyman Break Galaxies at z~5: Rest-Frame UV Spectra. III (2009)
Kajino, Hiroki, Ohta, Kouji, Iwata, Ikuru, Yabe, Kiyoto, Yuma, Suraphong, Akiyama, Masayuki, ...
We present results of optical spectroscopic observations of candidates of Lyman Break Galaxies (LBGs) at $z \sim 5$ in the region including the GOODS-N and the J0053+1234 region by using GMOS-N and...
The Stellar Populations of Lyman Break Galaxies at z~5 (2008)
Yabe, Kiyoto, Ohta, Kouji, Iwata, Ikuru, Sawicki, Marcin, Tamura, Naoyuki, Akiyama, Masayuki, ...
We present the results of Spectral Energy Distribution(SED) fitting analysis for Lyman Break Galaxies(LBGs) at z~5 in the GOODS-N and its flanking fields (the GOODS-FF). With the publicly available...
Differential Evolution of Lyman Break Galaxies from $z$=5 to 3 (2008)
Iwata, Ikuru, Ohta, Kouji, Sawicki, Marcin, Tamura, Naoyuki, Akiyama, Masayuki, Aoki, Kentaro
We briefly summarize our findings from the unbiased surveys for $z$$\sim$5 LBGs based on Subaru/Suprime-Cam and follow-up optical spectroscopy.
The Stellar Populations of Lyman Break Galaxies at $z\sim5$ (2008)
Yabe, Kiyoto, Ohta, Kouji, Iwata, Ikuru, Sawicki, Marcin, Tamura, Naoyuki, Akiyama, Masayuki, ...
We present the results of Spectral Energy Distribution (SED) fitting analysis for Lyman Break Galaxies (LBGs) at $z\sim5$ in the GOODS-N and its flanking fields. From the SED fitting for $\sim100$...
We have made a Monte Carlo simulation of the intergalactic absorption in order to model the Lyman continuum absorption, which is required to estimate the escape fraction of the Lyman continuum from...
Lyman Break Galaxies at z~5: Rest-frame UV Spectra II (2007)
Ando, Masataka, Ohta, Kouji, Iwata, Ikuru, Akiyama, Masayuki, Aoki, Kentaro, Tamura, Naoyuki
We present the results of spectroscopy of Lyman Break Galaxies (LBGs) at z~5 in the J0053+1234 field with the Faint Object Camera and Spectrograph on the Subaru telescope. Among 5 bright candidates...
CO Observations of a FeLoBAL Quasar with an H alpha Absorption Line at z=2.3 (2007)
Ohta, Kouji, Kiuchi, Gaku, Nakanishi, Kouichiro, Aoki, Kentaro, Iwata, Ikuru, Akiyama, Masayuki, ...
SDSS J083942.11+380526.3 is an Iron Low-ionization Broad Absorption Line (FeLoBAL) quasar at z = 2.3, and Aoki et al. (2006) recently found the presence of an H alpha absorption line in the broad H...
The Long Faint Tail of the High-Redshift Galaxy Population (2006)
Sawicki, Marcin, Iwata, Ikuru, Ohta, Kouji, Thompson, David, Tamura, Naoyuki, Akiyama, Masayuki, ...
We study the properties of very faint, sub-L* Lyman break galaxies at z~2-5 - thus far a largely neglected but numerically and energetically very important population. We find that the LBG luminosity...
Aoki, Kentaro, Iwata, Ikuru, Ohta, Kouji, Ando, Masataka, Akiyama, Masayuki, Tamura, Naoyuki
We discovered an H alpha absorption in a broad H alpha emission line of an unusual broad absorption line quasar, SDSS J083942.11+380526.3 at z=2.318, by near-infrared spectroscopy with the Cooled...
Escape fraction of ionizing photons from galaxies at z=0--6 (2006)
Inoue, Akio K., Iwata, Ikuru, Deharveng, Jean-Michel
The escape fraction of ionizing photons from galaxies is a crucial quantity controlling the cosmic ionizing background radiation and the reionization. Various estimates of this parameter can be...
Escape fraction of ionizing photons from galaxies at z=0--6 (2006)
Inoue, Akio K., Iwata, Ikuru, Deharveng, Jean-Michel
The escape fraction of ionizing photons from galaxies is a crucial quantity controlling the cosmic ionizing background radiation and the reionization. Various estimates of this parameter can be...
Ando, Masataka, Ohta, Kouji, Iwata, Ikuru, Akiyama, Masayuki, Aoki, Kentaro, Tamura, Naoyuki
We report a deficiency of luminous Lyman break galaxies (LBGs) with a large rest-frame equivalent width (EW_rest) of Lyman-alpha emission at z~5-6. Combining our spectroscopic sample of LBGs at z~5...
Escape fraction of ionizing photons from galaxies at z=0--6 (2006)
Inoue, Akio K., Iwata, Ikuru, Deharveng, Jean-Michel
The escape fraction of ionizing photons from galaxies is a crucial quantity controlling the cosmic ionizing background radiation and the reionization. Various estimates of this parameter can be...
Escape fraction of ionizing photons from galaxies at z=0--6 (2006)
Inoue, Akio K., Iwata, Ikuru, Deharveng, Jean-Michel
The escape fraction of ionizing photons from galaxies is a crucial quantity controlling the cosmic ionizing background radiation and the reionization. Various estimates of this parameter can be...
Yamada, Toru, Kodama, Tadayuki, Akiyama, Masayuki, Furusawa, Hisanori, Iwata, Ikuru, Kajisawa, Masaru, ...
We obtained the number counts and the rest-frame B-band luminosity function of the color-selected old passively-evolving galaxies (OPEGs) at z=1 with very high statistical accuracy using a large and...
Hamana, Takashi, Yamada, Toru, Ouchi, Masami, Iwata, Ikuru, Kodama, Tadayuki
We examine masses of hosting haloes of two photometrically-selected high-z galaxy samples: the old passively-evolving galaxies (OPEGs) and Lyman Break Galaxies (LBGs) both taken from the...
Lyman Break Galaxies at $z\sim5$: Rest-Frame UV Spectra (2004)
Ando, Masataka, Ohta, Kouji, Iwata, Ikuru, Watanabe, Chisato, Tamura, Naoyuki, Akiyama, Masayuki, ...
We report initial results for spectroscopic observations of candidates of Lyman Break Galaxies (LBGs) at $z\sim5$ in a region centered on the Hubble Deep Field-North by using the Faint Object Camera...
Possible Young Stellar Objects without Detectable CO Emission (1999)
Iwata, Ikuru, Okumura, Shin-ichiro, Saito, Mamoru
We found that at least 18 Young Stellar Object candidates invisible at optical and near-infrared wavelengths, as well as ^12CO emission. They are IRAS point sources with FIR colors similar to those...
Photometric Properties of Kiso Ultraviolet-Excess Galaxies in the Lynx-Ursa Major Region (1998)
Takeuchi, Tsutomu T., Tomita, Akihiko, Nakanishi, Kouichiro, Ishii, Takako T., Iwata, Ikuru, Saitō, Mamoru
We have performed a systematic study of several regions in the sky where the number of galaxies exhibiting star formation (SF) activity is greater than average. We used Kiso ultraviolet-excess...