Search Results - "Jike, Takaaki"

Fundamental Parameters of the Milky Way Galaxy Based on VLBI Astrometry by Honma, Mareki, Nagayama, Takumi, Ando, Kazuma, Bushimata, Takeshi, Choi, Yoon Kyung, Handa, Toshihiro, Hirota, Tomoya, Imai, Hiroshi, Jike, Takaaki, Kim, Mi Kyoung, Kameya, Osamu, Kawaguchi, Noriyuki, Kobayashi, Hideyuki, Kurayama, Tomoharu, Kuji, Seisuke, Matsumoto, Naoko, Manabe, Seiji, Miyaji, Takeshi, Motogi, Kazuhito, Nakagawa, Akiharu, Nakanishi, Hiroyuki, Niinuma, Kotaro, Oh, Chung Sik, Omodaka, Toshihiro, Oyama, Tomoaki, Sakai, Nobuyuki, Sato, Katsuhisa, Sato, Mayumi, Shibata, Katsunori M., Shiozaki, Satoshi, Sunada, Kazuyoshi, Tamura, Yoshiaki, Ueno, Yuji, Yamauchi, Aya

“…We present analyses to determine the fundamental parameters of the Galaxy based on VLBI astrometry of 52 Galactic maser sources obtained with VERA, VLBA, and…”
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Performance of VERA in 10 micro-arcsecond astrometry by Nagayama, Takumi, Kobayashi, Hideyuki, Hirota, Tomoya, Honma, Mareki, Jike, Takaaki, Kim, Mi Kyoung, Nakagawa, Akiharu, Omodaka, Toshihiro, Oyama, Tomoaki, Sakai, Daisuke, Shibata, Katsunori M, Tamura, Yoshiaki

“…Abstract Very Long Baseline Interferometry (VLBI) astrometry using the phase-referencing technique remains an open issue for the quantitative characterization…”
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The Hitachi and Takahagi 32 m radio telescopes: Upgrade of the antennas from satellite communication to radio astronomy by Yonekura, Yoshinori, Saito, Yu, Sugiyama, Koichiro, Soon, Kang Lou, Momose, Munetake, Yokosawa, Masayoshi, Ogawa, Hideo, Kimura, Kimihiro, Abe, Yasuhiro, Nishimura, Atsushi, Hasegawa, Yutaka, Fujisawa, Kenta, Ohyama, Tomoaki, Kono, Yusuke, Miyamoto, Yusuke, Sawada-Satoh, Satoko, Kobayashi, Hideyuki, Kawaguchi, Noriyuki, Honma, Mareki, Shibata, Katsunori M., Sato, Katsuhisa, Ueno, Yuji, Jike, Takaaki, Tamura, Yoshiaki, Hirota, Tomoya, Miyazaki, Atsushi, Niinuma, Kotaro, Sorai, Kazuo, Takaba, Hiroshi, Hachisuka, Kazuya, Kondo, Tetsuro, Sekido, Mamoru, Murata, Yasuhiro, Nakai, Naomasa, Omodaka, Toshihiro

“…Abstract The Hitachi and Takahagi 32 m radio telescopes (former satellite communication antennas) were so upgraded as to work at 6, 8, and 22 GHz. We developed…”
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Multifrequency VLBI Observations of the Broad Absorption Line Quasar J1020 4320: Recently Restarted Jet Activity? by Doi, Akihiro, Murata, Yasuhiro, Mochizuki, Nanako, Takeuchi, Hiroshi, Asada, Keiichi, Hayashi, Takayuki J., Nagai, Hiroshi, Shibata, Katsunori M., Oyama, Tomoaki, Jike, Takaaki, Fujisawa, Kenta, Sugiyama, Koichiro, Ogawa, Hideo, Kimura, Kimihiro, Honma, Mareki, Kobayashi, Hideyuki, Koyama, Shoka

“…This paper reports on very-long-baseline interferometry observations of the radio-loud broad absorption line (BAL) quasar J1020 $ +$ 4320 at 1.7, 2.3, 6.7, and…”
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Multi-Epoch VERA Observations of H2O Masers in OH 43.8−0.1 by Honma, Mareki, Bushimata, Takeshi, Choi, Yoon Kyung, Fujii, Takahiro, Hirota, Tomoya, Horiai, Koji, Imai, Hiroshi, Inomata, Noritomo, Ishitsuka, Jose, Iwadate, Kenzaburo, Jike, Takaaki, Kameya, Osamu, Kamohara, Ryuichi, Kan-ya, Yukitoshi, Kawaguchi, Noriyuki, Kijima, Masachika, Kobayashi, Hideyuki, Kuji, Seisuke, Kurayama, Tomoharu, Manabe, Seiji, Miyaji, Takeshi, Nakagawa, Akiharu, Nakashima, Kouichirou, Oh, Chung Sik, Omodaka, Toshihiro, Oyama, Tomoaki, Rioja, Maria, Sakai, Satoshi, Sato, Katsuhisa, Sasao, Tetsuo, Shibata, Katsunori M., Shimizu, Rie, Sora, Kasumi, Suda, Hiroshi, Tamura, Yoshiaki, Yamashita, Kazuyoshi

“…We report on multi-epoch observations of $\mathrm{H}_2\mathrm{O}$ maser emission in the star-forming region OH 43.8 $-$ 0.1, carried out with VLBI Exploration…”
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Parallax of a Mira variable R Ursae Majoris studied with astrometric VLBI by Nakagawa, Akiharu, Kurayama, Tomoharu, Matsui, Makoto, Omodaka, Toshihiro, Honma, Mareki, Shibata, Katsunori M., Sato, Katsuhisa, Jike, Takaaki

“…Abstract We have measured an annual parallax of the Mira variable R Ursae Majoris (R UMa) with the VLBI Exploration for Radio Astronomy (VERA). From the…”
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Trigonometric parallax and proper motion of Sagittarius A measured by VERA using the new broad-band back-end system OCTAVE-DAS by Oyama, Tomoaki, Nagayama, Takumi, Yamauchi, Aya, Sakai, Daisuke, Imai, Hiroshi, Honma, Mareki, Asakura, Yu, Hada, Kazuhiro, Hagiwara, Yoshiaki, Hirota, Tomoya, Jike, Takaaki, Kono, Yusuke, Suzuki, Syunsaku, Kobayashi, Hideyuki, Kawaguchi, Noriyuki

“…Abstract We successfully measured the trigonometric parallax of Sagittarius A* (Sgr A*) to be 117 ± 17 micro-arcseconds ($\, \mu \mbox{as}$) using the VLBI…”
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Astrometric VLBI observations of H2O masers in an extreme OH/IR star candidate NSV 17351 by Nakagawa, Akiharu, Morita, Atsushi, Sakai, Nobuyuki, Kurayama, Tomoharu, Sudou, Hiroshi, Orosz, Gabor, Yuda, Akito, Kaseda, Daichi, Matsuno, Masako, Hamada, Shota, Omodaka, Toshihiro, Ueno, Yuji, Shibata, Katsunori M, Tamura, Yoshiaki, Jike, Takaaki, Hirano, Ken, Honma, Mareki

“…Abstract The results of astrometric very long baseline interferometry (VLBI) observations toward an extreme OH/IR star candidate NSV 17351 are presented. Using…”
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The First VERA Astrometry Catalog by Hirota, Tomoya, Nagayama, Takumi, Honma, Mareki, Adachi, Yuuki, Burns, Ross A, Chibueze, James O, Choi, Yoon Kyung, Hachisuka, Kazuya, Hada, Kazuhiro, Hagiwara, Yoshiaki, Hamada, Shota, Handa, Toshihiro, Hashimoto, Mao, Hirano, Ken, Hirata, Yushi, Ichikawa, Takanori, Imai, Hiroshi, Inenaga, Daichi, Ishikawa, Toshio, Jike, Takaaki, Kameya, Osamu, Kaseda, Daichi, Kim, Jeong Sook, Kim, Jungha, Kim, Mi Kyoung, Kobayashi, Hideyuki, Kono, Yusuke, Kurayama, Tomoharu, Matsuno, Masako, Morita, Atsushi, Motogi, Kazuhito, Murase, Takeru, Nakagawa, Akiharu, Nakanishi, Hiroyuki, Niinuma, Kotaro, Nishi, Junya, Oh, Chung Sik, Omodaka, Toshihiro, Oyadomari, Miyako, Oyama, Tomoaki, Sakai, Daisuke, Sakai, Nobuyuki, Sawada-Satoh, Satoko, Shibata, Katsunori M, Shizugami, Makoto, Sudo, Jumpei, Sugiyama, Koichiro, Sunada, Kazuyoshi, Suzuki, Syunsaku, Takahashi, Ken, Tamura, Yoshiaki, Tazaki, Fumie, Ueno, Yuji, Uno, Yuri, Urago, Riku, Wada, Koji, Wu, Yuan Wei, Yamashita, Kazuyoshi, Yamashita, Yuto, Yamauchi, Aya, Yuda, Akito

“…Abstract We present the first astrometry catalog from the Japanese VLBI (very long baseline interferometer) project VERA (VLBI Exploration of Radio…”
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Annual parallax measurement of the Mira variable star BX Camelopardalis with VERA by Matsuno, Masako, Nakagawa, Akiharu, Morita, Atsushi, Kurayama, Tomoharu, Omodaka, Toshihiro, Nagayama, Takumi, Honma, Mareki, Shibata, Katsunori M, Ueno, Yuji, Jike, Takaaki, Tamura, Yoshiaki

“…Abstract We report the results of astrometric VLBI observations toward the Mira variable star BX Cam using the VERA VLBI array. The observation was performed…”
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Astrometry of H2O Masers in Nearby Star-Forming Regions with VERA II SVS 13 in NGC 1333 by Hirota, Tomoya, Bushimata, Takeshi, Choi, Yoon Kyung, Honma, Mareki, Imai, Hiroshi, Iwadate, Kenzaburo, Jike, Takaaki, Kameya, Osamu, Kamohara, Ryuichi, Kan-Ya, Yukitoshi, Kawaguchi, Noriyuki, Kijima, Masachika, Kobayashi, Hideyuki, Kuji, Seisuke, Kurayama, Tomoharu, Manabe, Seiji, Miyaji, Takeshi, Nagayama, Takumi, Nakagawa, Akiharu, Oh, Chung Sik, Omodaka, Toshihiro, Oyama, Tomoaki, Sakai, Satoshi, Sasao, Tetsuo, Sato, Katsuhisa, Shibata, Katsunori M., Tamura, Yoshiaki, Yamashita, Kazuyoshi

“…We report on the results of multiepoch very long baseline interferometry (VLBI) observations with VERA (VLBI Exploration of Radio Astrometry) of the 22 GHz H…”
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East Asian VLBI Network astrometry toward the extreme outer Galaxy: Kinematic distance with the proper motion of G034.84−00.95 by Sakai, Nobuyuki, Zhang, Bo, Xu, Shuangjing, Sakai, Daisuke, Tamura, Yoshiaki, Jike, Takaaki, Jung, Taehyun, Oh, Chungsik, Kim, Jeong-Sook, Kawaguchi, Noriyuki, Imai, Hiroshi, Jiang, Wu, Cui, Lang, Kim, Soon-Wook, Jiang, Pengfei, Kurayama, Tomoharu, Lee, Jeong Ae, Hachisuka, Kazuya, Jung, Dong-Kyu, Xia, Bo, Li, Guanghui, Honma, Mareki, Kim, Kee-Tae, Shen, Zhi-Qiang, Wang, Na

“…Abstract We aim to reveal the structure and kinematics of the Outer Scutum–Centaurus (OSC) arm located on the far side of the Milky Way through very long…”
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SiO Maser Observations toward Orion-KL with VERA by Kim, Mi Kyoung, Hirota, Tomoya, Honma, Mareki, Kobayashi, Hideyuki, Bushimata, Takeshi, Choi, Yoon Kyung, Imai, Hiroshi, Iwadate, Kenzaburo, Jike, Takaaki, Kameno, Seiji, Kameya, Osamu, Kamohara, Ryuichi, Kan-Ya, Yukitoshi, Kawaguchi, Noriyuki, Kuji, Seisuke, Kurayama, Tomoharu, Manabe, Seiji, Matsui, Makoto, Matsumoto, Naoko, Miyaji, Takeshi, Nagayama, Takumi, Nakagawa, Akiharu, Oh, Chung Sik, Omodaka, Toshihiro, Oyama, Tomoaki, Sakai, Satoshi, Sasao, Tetsuo, Sato, Katsuhisa, Sato, Mayumi, Shibata, Katsunori M., Tamura, Yoshiaki, Yamashita, Kazuyoshi

“…We present results of phase-referencing VLBI observations of SiO masers in the Orion-KL region made with VERA. Using a strong maser spot in the 43GHz $v =$ 2…”
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Astrometry of Galactic Star-Forming Region Sharpless 269 with VERA: Parallax Measurements and Constraint on Outer Rotation Curve by Honma, Mareki, Bushimata, Takeshi, Choi, Yoon Kyung, Hirota, Tomoya, Imai, Hiroshi, Iwadate, Kenzaburo, Jike, Takaaki, Kameya, Osamu, Kamohara, Ryuichi, Kan-ya, Yukitoshi, Kawaguchi, Noriyuki, Kijima, Masachika, Kobayashi, Hideyuki, Kuji, Seisuke, Kurayama, Tomoharu, Manabe, Seiji, Miyaji, Takeshi, Nagayama, Takumi, Nakagawa, Akiharu, Oh, Chung Sik, Omodaka, Toshihiro, Oyama, Tomoaki, Sakai, Satoshi, Sato, Katsuhisa, Sasao, Tetsuo, Shibata, Katsunori M., Shintani, Motonobu, Suda, Hiroshi, Tamura, Yoshiaki, Tsushima, Miyuki, Yamashita, Kazuyoshi

“…We have performed high-precision astrometry of H $_2$ O maser sources in the Galactic star-forming region Sharpless 269 (S269) with VERA. We successfully…”
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Overview of the Observing System and Initial Scientific Accomplishments of the East Asian VLBI Network (EAVN) by Akiyama, Kazunori, Algaba, Juan-Carlos, An, Tao, Asada, Keiichi, Asanok, Kitiyanee, Byun, Do-Young, Chanapote, Thanapol, Chen, Wen, Chen, Zhong, Cheng, Xiaopeng, Chibueze, James O., Cho, Ilje, Cho, Se-Hyung, Chung, Hyun-Soo, Cui, Lang, Cui, Yuzhu, Doi, Akihiro, Dong, Jian, Fujisawa, Kenta, Gou, Wei, Guo, Wen, Hada, Kazuhiro, Hagiwara, Yoshiaki, Hirota, Tomoya, Hodgson, Jeffrey A., Honma, Mareki, Imai, Hiroshi, Jaroenjittichai, Phrudth, Jiang, Wu, Jiang, Yongbin, Jiang, Yongchen, Jike, Takaaki, Jung, Dong-Kyu, Jung, Taehyun, Kawaguchi, Noriyuki, Kim, Dong-Jin, Kim, Hyo-Ryoung, Kim, Jaeheon, Kim, Jeong-Sook, Kim, Kee-Tae, Kim, Soon-Wook, Kino, Motoki, Kobayashi, Hideyuki, Koyama, Shoko, Kramer, Busaba H., Lee, Jee-Won, Lee, Jeong Ae, Lee, Sang-Sung, Lee, Sang Won, Li, Bin, Li, Guanghui, Li, Xiaofei, Li, Zhixuan, Liu, Qinghui, Liu, Xiang, Lu, Ru-Sen, Motogi, Kazuhito, Nakamura, Masanori, Niinuma, Kotaro, Oh, Chungsik, Oh, Hongjong, Oh, Junghwan, Oh, Se-Jin, Oyama, Tomoaki, Park, Jongho, Poshyachinda, Saran, Ro, Hyunwook, Roh, Duk-Gyoo, Rujopakarn, Wiphu, Sakai, Nobuyuki, Sawada-Satoh, Satoko, Shen, Zhi-Qiang, Shibata, Katsunori M., Sohn, Bong Won, Soonthornthum, Boonrucksar, Sugiyama, Koichiro, Sun, Yunxia, Takamura, Mieko, Tanabe, Yoshihiro, Tazaki, Fumie, Trippe, Sascha, Wajima, Kiyoaki, Wang, Jinqing, Wang, Na, Wang, Shiqiang, Wang, Xuezheng, Xia, Bo, Xu, Shuangjing, Yan, Hao, Yang, Wenjun, Yeom, Jae-Hwan, Yi, Kunwoo, Yi, Sang-Oh, Yonekura, Yoshinori, Yoon, Hasu, Yu, Linfeng, Yuan, Jianping, Yun, Youngjoo, Zhang, Bo, Zhang, Hua

“…The East Asian VLBI Network (EAVN) is an international VLBI facility in East Asia and is operated under mutual collaboration between East Asian countries, as…”
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SiO MASERS AROUND WX PSC MAPPED WITH THE KVN AND VERA ARRAY (KaVA) by Yun, Youngjoo, Cho, Se-Hyung, Imai, Hiroshi, Kim, Jaeheon, Asaki, Yoshiharu, Chibueze, James O., Choi, Yoon Kyung, Dodson, Richard, Kim, Dong-Jin, Kusuno, Kozue, Matsumoto, Naoko, Min, Cheulhong, Oyadomari, Miyako, Rioja, María J., Yoon, Dong-Hwan, Byun, Do-Young, Chung, Hyunsoo, Chung, Moon-Hee, Hagiwara, Yoshiaki, Han, Myoung-Hee, Han, Seog-Tae, Hirota, Tomoya, Honma, Mareki, Hwang, Jung-Wook, Je, Do-Heung, Jike, Takaaki, Jung, Dong-Kyu, Jung, Taehyun, Kang, Ji-Hyun, Kang, Jiman, Kang, Yong-Woo, Kan-ya, Yukitoshi, Kanaguchi, Masahiro, Kawaguchi, Noriyuki, Kim, Bong Gyu, Kim, Hyo Ryoung, Kim, Hyun-Goo, Kim, Jongsoo, Kim, Kee-Tae, Kim, Mikyoung, Kobayashi, Hideyuki, Kono, Yusuke, Kurayama, Tomoharu, Lee, Changhoon, Lee, Jeewon, Lee, Jeong Ae, Lee, Jung-Won, Lee, Sang Hyun, Lee, Sang-Sung, Lyo, A-Ran, Minh, Young Chol, Oh, Chungsik, Oh, Se-Jin, Oyama, Tomoaki, Roh, Duk-Gyoo, Sawada-Satoh, Satoko, Shibata, Katsunori M., Sohn, Bong Won, Song, Min-Gyu, Tamura, Yoshiaki, Wi, Seog-Oh, Yeom, Jae-Hwan

“…ABSTRACT We present the first images of the v = 1 and v = 2 J = 1 → 0 SiO maser lines taken with KaVA, i.e., the combined array of the Korean Very Long…”
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Distance to VY Canis Majoris with VERA by Choi, Yoon Kyung, Hirota, Tomoya, Honma, Mareki, Kobayashi, Hideyuki, Bushimata, Takeshi, Imai, Hiroshi, Iwadate, Kenzaburo, Jike, Takaaki, Kameno, Seiji, Kameya, Osamu, Kamohara, Ryuichi, Kan-Ya, Yukitoshi, Kawaguchi, Noriyuki, Kijima, Masachika, Kim, Mi Kyoung, Kuji, Seisuke, Kurayama, Tomoharu, Manabe, Seiji, Maruyama, Kenta, Matsui, Makoto, Matsumoto, Naoko, Miyaji, Takeshi, Nagayama, Takumi, Nakagawa, Akiharu, Nakamura, Kayoko, Oh, Chung Sik, Omodaka, Toshihiro, Oyama, Tomoaki, Sakai, Satoshi, Sasao, Tetsuo, Sato, Katsuhisa, Sato, Mayumi, Shibata, Katsunori M., Tamura, Yoshiaki, Tsushima, Miyuki, Yamashita, Kazuyoshi

“…We report on astrometric observations of H $_2$ O masers around the red supergiant VY Canis Majoris carried out with VLBI Exploration of Radio Astrometry…”
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Distance to NGC 281 in a Galactic Fragmenting Superbubble: Parallax Measurements with VERA by Sato, Mayumi, Hirota, Tomoya, Honma, Mareki, Kobayashi, Hideyuki, Sasao, Tetsuo, Bushimata, Takeshi, Choi, Yoon Kyung, Imai, Hiroshi, Iwadate, Kenzaburo, Jike, Takaaki, Kameno, Seiji, Kameya, Osamu, Kamohara, Ryuichi, Kan-Ya, Yukitoshi, Kawaguchi, Noriyuki, Kim, Mi Kyoung, Kuji, Seisuke, Kurayama, Tomoharu, Manabe, Seiji, Matsui, Makoto, Matsumoto, Naoko, Miyaji, Takeshi, Nagayama, Takumi, Nakagawa, Akiharu, Nakamura, Kayoko, Oh, Chung Sik, Omodaka, Toshihiro, Oyama, Tomoaki, Sakai, Satoshi, Sato, Katsuhisa, Shibata, Katsunori M., Tamura, Yoshiaki, Yamashita, Kazuyoshi

“…We have used the Japanese VLBI array VERA to perform high-precision astrometry of an H $_2$ O maser source in the Galactic star-forming region NGC 281 West,…”
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VLBI Astrometry of AGB Variables with VERA — A Semiregular Variable S Crateris by Nakagawa, Akiharu, Tsushima, Miyuki, Ando, Kazuma, Bushimata, Takeshi, Choi, Yoon Kyung, Hirota, Tomoya, Honma, Mareki, Imai, Hiroshi, Iwadate, Kenzaburo, Jike, Takaaki, Kameno, Seiji, Kameya, Osamu, Kamohara, Ryuichi, Kan-Ya, Yukitoshi, Kawaguchi, Noriyuki, Kijima, Masachika, Kim, Mi Kyoung, Kobayashi, Hideyuki, Kuji, Seisuke, Kurayama, Tomoharu, Maeda, Toshihisa, Manabe, Seiji, Maruyama, Kenta, Matsui, Makoto, Matsumoto, Naoko, Miyaji, Takeshi, Nagayama, Takumi, Nakamura, Kayoko, Nyu, Daisuke, Oh, Chung Sik, Omodaka, Toshihiro, Oyama, Tomoaki, Pradel, Nicolas, Sakai, Satoshi, Sasao, Tetsuo, Sato, Katsuhisa, Sato, Mayumi, Shibata, Katsunori M., Suda, Hiroshi, Tamura, Yoshiaki, Ueda, Kousuke, Ueno, Yuji, Yamashita, Kazuyoshi

“…We present a distance measurement for the semiregular variable S Crateris (S Crt) based on its annual parallax. With the unique dual beam system of the VLBI…”
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Same-beam VLBI observations of SELENE for improving lunar gravity field model by Liu, Q., Kikuchi, F., Matsumoto, K., Goossens, S., Hanada, H., Harada, Y., Shi, X., Huang, Q., Ishikawa, T., Tsuruta, S., Asari, K., Ishihara, Y., Kawano, N., Kamata, S., Iwata, T., Noda, H., Namiki, N., Sasaki, S., Ellingsen, S., Sato, K., Shibata, K., Tamura, Y., Jike, T., Iwadate, K., Kameya, O., Ping, J., Xia, B., An, T., Fan, Q., Hong, X., Yang, W., Zhang, H., Aili, Y., Reid, B., Hankey, W., McCallum, J., Kronschnabl, G., Schlüter, W.

“…The Japanese lunar mission, Selenological and Engineering Explorer (Kaguya), which was successfully launched on 14 September 2007, consists of a main satellite…”
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