Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Tamura A"'
Autor:
Tomoharu Kurayama, Tomoya Hirota, Yukitoshi Kan-ya, Yuuki Adachi, Mareki Honma, Takumi Nagayama, Yoshiaki Tamura
Publikováno v:
Publications of the Astronomical Society of Japan. 72
We present the VEra Data Analyzer (VEDA) software package for Very Long Baseline Interferometry (VLBI) phase-referencing observations and parallax measurements. The Japanese VLBI project VLBI Exploration of Radio Astrometry (VERA) provides high-preci
Autor:
Aleksander S. Sklyanov, Kojiguchi Naoto, Mariko Kimura, Tomas Medulka, Akihiko Fukui, Tonny Vanmunster, Javier Ruiz, Daisaku Nogami, Charles Galdies, Yuka Terada, Motohide Tamura, Kirill A. Antonyuk, Yusuke Tampo, Pavol A. Dubovsky, M. A. Burlak, Tamás Tordai, Nikolaj V. Pit, A. Belinski, Igor Kudzej, Brandon McIntyre, Roi Alonso, Masanori Mizutani, Egor O. Mishin, Norio Narita, Taichi Kato, Ian Miller, K. Kawauchi, Nicolas Crouzet, Felipe Mugas, Julia V. Babina, Taku Nishiumi, Kenneth Menzies, Geoffrey Stone, Sergey A. Potanin, Enric Palle, Víctor J. S. Béjar, Noriharu Watanabe, N. P. Ikonnikova, Jesse Leahy-McGregor, Aleksei V. Baklanov, Nobuhiko Kusakabe, Michael Richmond, Yasuyuki Wakamatsu, A. V. Dodin, A. M. Zubareva, Keisuke Isogai, Stephen M. Brincat, Hiroshi Itoh, Kirill Sokolovsky, Oksana I. Antonyuk, Hidehiko Akazawa, Roger D. Pickard, Elena P. Pavlenko, Núria Casasayas-Barris
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
arXiv:2004.10508v1
et al.
We report on photometric and spectroscopic observations and analysis of the 2019 superoutburst of TCP J21040470+4631129. This object showed a 9 mag superoutburst with early superhumps and ordinary superhumps, which
et al.
We report on photometric and spectroscopic observations and analysis of the 2019 superoutburst of TCP J21040470+4631129. This object showed a 9 mag superoutburst with early superhumps and ordinary superhumps, which
Autor:
Takaaki Jike, Katsunori M. Shibata, Tomoya Hirota, Mi Kyoung Kim, Toshihiro Omodaka, Hideyuki Kobayashi, Mareki Honma, Takumi Nagayama, Akiharu Nakagawa, Tomoaki Oyama, Daisuke Sakai, Yoshiaki Tamura
Publikováno v:
Publications of the Astronomical Society of Japan. 72
Very Long Baseline Interferometry (VLBI) astrometry using the phase-referencing technique remains an open issue for the quantitative characterization of the observing conditions to achieve a feasible parallax precision of 10 micro-arcseconds (μas).
Autor:
Takumi Nagayama, Yoshiaki Tamura, Atsushi Morita, Tomoharu Kurayama, Mareki Honma, Toshihiro Omodaka, Akiharu Nakagawa, Katsunori M. Shibata, Yuji Ueno, Masako Matsuno, Takaaki Jike
Publikováno v:
Publications of the Astronomical Society of Japan. 72
We report the results of astrometric VLBI observations toward the Mira variable star BX Cam using the VERA VLBI array. The observation was performed from 2012 February to 2014 November. The parallax obtained is 1.73 ± 0.03 mas corresponding to a dis
Autor:
Kohji Tomisaka, Jungmi Kwon, Tetsuya Nagata, Motohide Tamura, Ken'ichi Tatematsu, Tomoaki Matsumoto, Nobuhiko Kusakabe, Ryo Kandori, Ryo Tazaki, Masao Saito, Takahiro Nagayama
Publikováno v:
Publications of the Astronomical Society of Japan. 72
The magnetic field structure, kinematical stability, and evolutionary status of the starless dense core Barnard 68 (B68) are revealed based on the near-infrared polarimetric observations of background stars, measuring the dichroically polarized light
Autor:
Shigeru Takahashi, Nario Kuno, Kotaro Kohno, Akio Taniguchi, Yoichi Tamura, Jun Maekawa, Tetsuhiro Minamidani, Osamu Horigome, Takeshi Sakai
Publikováno v:
Publications of the Astronomical Society of Japan. 72
We propose a new observing method for single-dish millimeter and submillimeter spectroscopy using a heterodyne receiver equipped with a frequency-modulating local oscillator (FMLO). Unlike conventional switching methods, which extract astronomical si
Publikováno v:
Publications of the Astronomical Society of Japan. 71
With the Atacama Large Millimeter/sub-millimeter Array (ALMA), we report detections of the far-infrared (FIR) [OIII] 88 $\mu$m line and the underlying dust continuum in the two quasars in the reionization epoch, J205406.48-000514.8 (hereafter J2054-0
Autor:
Takahiro Nagayama, Fumitaka Nakamura, Q. Nguyen-Luong, Takayoshi Kusune, Shogo Nishiyama, Motohide Tamura, Kazuhito Dobashi, Tomomi Shimoikura, Makoto Watanabe, Koji Sugitani
Publikováno v:
Publications of the Astronomical Society of Japan. 71
We conducted near-infrared (JHKs) imaging polarimetry toward the infrared dark cloud (IRDC) M17 SWex, including almost all of the IRDC filaments as well as its outskirts, with the polarimeter SIRPOL on the IRSF 1.4 m telescope. We revealed the magnet
Autor:
Hisanori Furusawa, Yoshiaki Taniguchi, Nobunari Kashikawa, Takuya Hashimoto, Yuichi Harikane, Erik Zackrisson, Takashi Okamoto, Akio K. Inoue, Hiroshi Matsuo, Darach Watson, Kotaro Kohno, Kazuaki Ota, Takatoshi Shibuya, Ken Mawatari, Ikkoh Shimizu, Kirsten Kraiberg Knudsen, Yoichi Tamura, Hideki Umehata, Masami Ouchi, Yoshiaki Ono, Pascal Oesch
Publikováno v:
Publications of the Astronomical Society of Japan. 71
We present new ALMA observations and physical properties of a Lyman Break Galaxy at z=7.15. Our target, B14-65666, has a bright ultra-violet (UV) absolute magnitude, $M_{\rm UV}\approx-22.4$, and has been spectroscopically identified in Ly$\alpha$ wi
Autor:
Tomomi Shimoikura, Shuji Sato, Fumitaka Nakamura, Koji Sugitani, Kazuhito Dobashi, Jungmi Kwon, Benjamin Wu, Motohide Tamura, Takayoshi Kusune
Publikováno v:
Publications of the Astronomical Society of Japan. 71
We made near-infrared polarimetric observations toward Serpens South. This region contains three dense filaments that are roughly parallel to one another. Using the histogram of relative orientations, the three filaments are found to be roughly perpe