A Massive Substellar Companion to the Massive Giant HD 119445 (2009)
Omiya, Masashi, Izumiura, Hideyuki, Han, Inwoo, Lee, Byeong-Cheol, Sato, Bun'ei, Kambe, Eiji, ...
We detected a brown dwarf-mass companion around the intermediate-mass giant star HD 119445 (G6III) using the Doppler technique. This discovery is the first result from a Korean-Japanese planet search...
Arai, Akira, Uemura, Makoto, Sasada, Mahito, Trushkin, Sergei A., Ueda, Yoshihiro, Takahashi, Hiromitsu, ...
We report detailed, long term near-infrared (NIR) light curves of GRS 1915+105 in 2007-2008, covering its long "soft state" for the first time. From our NIR monitoring and the X-ray data of the All...
Discovery of a Giant Lya Emitter Near the Reionization Epoch (2008)
Ouchi, Masami, Ono, Yoshiaki, Egami, Eiichi, Saito, Tomoki, Oguri, Masamune, McCarthy, Patrick J., ...
We report the discovery of a giant Lya emitter (LAE) with a Spitzer/IRAC counterpart near the reionization epoch at z=6.595. The giant LAE is found from the extensive 1 deg^2 Subaru narrow-band...
Sato, Bun'ei, Toyota, Eri, Omiya, Masashi, Izumiura, Hideyuki, Kambe, Eiji, Masuda, Seiji, ...
We report on the detection of four extrasolar planets orbiting evolved intermediate-mass stars from a precise Doppler survey of G and K giants at Okayama Astrophysical Observatory. All of the host...
The 2006 November outburst of EG Aquarii: the SU UMa nature revealed (2008)
Imada, Akira, Stubbings, Rod, Kato, Taichi, Uemura, Makoto, Krajci, Thomas, Torii, Ken'ichi, ...
We report time-resolved CCD photometry of the cataclysmic variable EG Aquarii during the 2006 November outburst During the outburst, superhumps were unambiguously detected with a mean period of...
Evidence for a companion to BM Gem, a silicate carbon star (2008)
Izumiura, Hideyuki, Noguchi, Kunio, Aoki, Wako, Honda, Satoshi, Ando, Hiroyasu, Takada-Hidai, Masahide, ...
Balmer and Paschen continuum emission as well as Balmer series lines of P Cygni-type profile from H_gamma through H_23 are revealed in the violet spectra of BM Gem, a carbon star associated with an...
Sato, Bun'ei, Izumiura, Hideyuki, Toyota, Eri, Kambe, Eiji, Ikoma, Masahiro, Omiya, Masashi, ...
We report the detection of 3 new extrasolar planets from the precise Doppler survey of G and K giants at Okayama Astrophysical Observatory. The host stars, namely, 18 Del (G6 III), xi Aql (K0 III)...
Emission Line Velocity Field Of The Magellanic Irregular Galaxy Ngc 4449 (2007)
Minoru Sasaki, Mamoru Saito, Kouji Ohta, Michitoshi Yoshida, Tasuhiro Shimizu, Hisashi Koyano
The imaging spectroscopic observations of the Magellanic irregular galaxy NGC 4449 were made to show the detailed kinematic structure of the galaxy. Many filamentary structures and Several...
A Substellar Companion to the Intermediate-Mass Giant 11 Com (2007)
Liu, Y. J., Sato, Bun'ei, Zhao, G., Noguchi, Kunio, Wang, H., Kambe, Eiji, ...
We report the detection of a substellar companion orbiting the intermediate-mass giant star 11 Com (G8 III). Precise Doppler measurements of the star from Xinglong station and Okayama Astrophysical...
Ouchi, Masami, Shimasaku, Kazuhiro, Akiyama, Masayuki, Simpson, Chris, Saito, Tomoki, Ueda, Yoshihiro, ...
We present luminosity functions (LFs) and various properties of Lya emitters (LAEs) at z=3.1, 3.7, and 5.7, in a 1 deg^2 sky of the Subaru/XMM-Newton Deep Survey (SXDS) Field. We obtain a photometric...
Deep Spectroscopy of Systematically Surveyed Extended Lyman-alpha Sources at z~3-5 (2007)
Saito, Tomoki, Shimasaku, Kazuhiro, Okamura, Sadanori, Ouchi, Masami, Akiyama, Masayuki, Yoshida, Michitoshi, ...
Spatially extended Ly-alpha sources that are faint and/or compact in coninuum are candidates for extremely young (~< 10^7 yrs) galaxies at high redshifts. We present medium-resolution (R~2000)...
Yagi, Masafumi, Komiyama, Yutaka, Yoshida, Michitoshi, Furusawa, Hisanori, Kashikawa, Nobunari, Koyama, Yusei, ...
In the deep narrow band image of the Coma Cluster taken with Suprime-Cam of the Subaru telescope, we found an extremely long and narrow (~ 60 kpc x 2 kpc) Halpha emitting region associated with a...
Systematic Survey of Extended Lyman-alpha Sources over z~3-5 (2006)
Saito, Tomoki, Shimasaku, Kazuhiro, Okamura, Sadanori, Ouchi, Masami, Akiyama, Masayuki, Yoshida, Michitoshi
Spatially extended Ly-alpha sources which are faint and compact in coninuum are candidates for extremely young galaxies (age of ~
Kawabata, Koji S., Ohyama, Youichi, Ebizuka, Noboru, Takata, Tadafumi, Yoshida, Michitoshi, Isogai, Mizuki, ...
We present low-resolution ($R\sim 90$) and medium-resolution ($R\sim 2500$) spectropolarimetry of Nova V475 Sct with the HBS instrument, mounted on the 0.91-m telescope at the Okayama Astrophysical...
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...
The Color Selection of Quasars from Redshifts 5 to 10: Cloning and Discovery (2005)
Chiu, Kuenley, Zheng, Wei, Schneider, Donald P., Glazebrook, Karl, Iye, Masanori, Kashikawa, Nobunari, ...
We present simulations of quasar colors, magnitudes, and numbers at redshifts 54.7 quasars increases by a factor of 3X by extending 0.7 i-magnitudes deeper than the SDSS spectroscopic survey limit of...
The color selection of quasars from redshifts 5 to 10: cloning and discovery (2005)
Chiu, Kuenley, Zheng, Wei Yan, Schneider, Donald P., Glazebrook, Karl, Iye, Masanori, Kashikawa, Nobunari, ...
We present simulations of quasar colors, magnitudes, and numbers at redshifts 5 < z < 10 based on our discovery of 10 new high-redshift quasars and the cloning of lower redshift Sloan Digital...
The color selection of quasars from redshifts 5 to 10: cloning and discovery (2005)
Chiu, Kuenley, Zheng, Wei Yan, Schneider, Donald P., Glazebrook, Karl, Iye, Masanori, Kashikawa, Nobunari, ...
We present simulations of quasar colors, magnitudes, and numbers at redshifts 5 < z < 10 based on our discovery of 10 new high-redshift quasars and the cloning of lower redshift Sloan Digital...
The color selection of quasars from redshifts 5 to 10: cloning and discovery (2005)
Chiu, Kuenley, Zheng, Wei Yan, Schneider, Donald P., Glazebrook, Karl, Iye, Masanori, Kashikawa, Nobunari, ...
We present simulations of quasar colors, magnitudes, and numbers at redshifts 5 < z < 10 based on our discovery of 10 new high-redshift quasars and the cloning of lower redshift Sloan Digital...
Current performance and on-going improvements of the 8.2 m Subaru Telescope (2004)
Iye, Masanori, Karoji, Hiroshi, Ando, Hiroyasu, Kaifu, Norio, Kodaira, Keiichi, Aoki, Kentaro, ...
An overview of the current status of the 8.2m Subaru Telescope constructed and operated at Mauna Kea, Hawaii, by the National Astronomical Observatory of Japan is presented. The basic design concept...
Dusty ERO Search behind Two Massive Clusters (2003)
Takata, Tadafumi, Kashikawa, Nobunari, Nakanishi, Kouichiro, Aoki, Kentaro, Asai, Ryo, Ebizuka, Noboru, ...
We performed deep K'-band imaging observations of 2 massive clusters, MS 0451.6-0305 at z = 0.55 and MS 0440.5+0204 at z = 0.19, for searching counterparts of the faint sub-mm sources behind these...
Ohyama, Youichi, Yoshida, Michitoshi, Takata, Tadafumi
We report on our new analysis of the spatial and kinematical distribution of warm and cold molecular gas in NGC 6240, which was undertaken to explore the origin of its unusually luminous H$_2$...
Decomposition of the Superwind in M82 (2002)
Ohyama, Youichi, Taniguchi, Yoshiaki, Iye, Masanori, Yoshida, Michitoshi, Sekiguchi, Kazuhiro, Takata, Tadafumi, ...
We present new optical images ($B$, $V$, and H$\alpha$) of the archetypical starburst/superwind galaxy M82 obtained with the 8.2 m Subaru Telescope to reveal new detailed structures of the...
Kashikawa, Nobunari, Takata, Tadafumi, Ohyama, Youichi, Yoshida, Michitoshi, Maihara, Toshinori, Iwamuro, Fumihide, ...
We have constructed a very deep K'-selected multicolor BVRIz'JK' sample of 439 field galaxies. Photometric redshifts for sample galaxies were estimated. The overall redshift distribution N(z) for the...
Discovery of Very Extended Emission-Line Region around the Seyfert 2 Galaxy NGC 4388 (2001)
Yoshida, Michitoshi, Yagi, Masafumi, Okamura, Sadanori, Aoki, Kentaro, Ohyama, Youichi, Komiyama, Yutaka, ...
We found a very large, 35 kpc, emission-line region around the Seyfert type 2 galaxy NGC 4388, using deep narrow-band imaging with the prime focus camera (Suprime-Cam) of the Subaru telescope. This...
A Shock-Induced Pair of Superbubbles in the High-Redshift Powerful Radio Galaxy MRC 0406-244 (2001)
Taniguchi, Yoshiaki, Ohyama, Youichi, Murayama, Takashi, Yoshida, Michitoshi, Kashikawa, Nobunari, Iye, Masanori, ...
We present new optical spectroscopy of the high-redshift powerful radio galaxy MRC 0406$-$244 at redshift of 2.429. We find that the two extensions toward NW and SE probed in the rest-frame...
Yamada, Toru, Kajisawa, Masaru, Tanaka, Ichi, Maihara, Toshinori, Iwamuro, Fumihide, Terada, Hiroshi, ...
We have obtained high-resolution K'-band images of the powerful z=1.206 radio galaxy 3C 324 with the Subaru telescope under seeing conditions of 0.3--0.4 arcsec. We clearly resolved the galaxy and...
Color-Magnitude Sequence in the Clusters at z$\sim$1.2 near the Radio Galaxy 3C 324 (2000)
Kajisawa, Masaru, Yamada, Toru, Tanaka, Ichi, Maihara, Toshinori, Iwamuro, Fumihide, Terada, Hiroshi, ...
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...
Superwind-Driven Intense H_2 Emission in NGC 6240 (2000)
Ohyama, Youichi, Yoshida, Michitoshi, Takata, Tadafumi, Imanishi, Masatoshi, Usuda, Tomonori, Saito, Yoshihiko, ...
We have performed a long-slit K band spectroscopic observation of the luminous infrared galaxy NGC 6240. The peak position of the H_2 v=1-0 S(1) emission in the slit is located ~0.3" - 0.4" north of...
Extended High-Ionization Nuclear Emission-Line Region in the Seyfert Galaxy NGC 4051 (1999)
Nagao, Tohru, Murayama, Takashi, Taniguchi, Yoshiaki, Yoshida, Michitoshi
We present an optical spectroscopic analysis of the well-known Seyfert galaxy NGC 4051. The high-ionization nuclear emission-line region (HINER) traced by [Fe X]6374 is found to be spatially extended...
Observations of the Velocity Field of NGC 4051 (1997)
Kaneko, Noboru, Aoki, Kentaro, Kosugi, George, Ohtani, Hiroshi, Yoshida, Michitoshi, Toyama, Kiyotaka, ...