Zobrazeno 1 - 10
of 157
pro vyhledávání: '"Nakajima, Kazuhiro"'
Autor:
Kato, Taichi, Isogai, Keisuke, Wakamatsu, Yasuyuki, Hambsch, Franz-Josef, Itoh, Hiroshi, Tordai, Tamas, Vanmunster, Tonny, Dubovsky, Pavol A., Kudzej, Igor, Medulka, Tomas, Kimura, Mariko, Ohnishi, Ryuhei, Monard, Berto, Pavlenko, Elena P., Antonyuk, Kirill A., Pit, Nikolaj V., Antonyuk, Oksana I., Babina, Julia V., Baklanov, Aleksei V., Sosnovskij, Aleksei A., Pickard, Roger D., Miller, Ian, Maeda, Yutaka, de Miguel, Enrique, Brincat, Stephen M., Licchelli, Domenico, Cook, Lewis M., Shugarov, Sergey Yu., Zaostrojnykh, Anna M., Chochol, Drahomir, Golysheva, Polina, Katysheva, Natalia, Zubareva, Alexandra M., Stone, Geoff, Kasai, Kiyoshi, Starr, Peter, Littlefield, Colin, Kiyota, Seiichiro, Andreev, Maksim V., Sergeev, Alexandr V., Ruiz, Javier, Myers, Gordon, Simon, Andrii O., Vasylenko, Volodymyr V., Soldan, Francisco, Ogmen, Yenal, Nakajima, Kazuhiro, Nelson, Peter, Masi, Gianluca, Menzies, Kenneth, Sabo, Richard, Bolt, Greg, Dvorak, Shawn, Stanek, Krzysztof Z., Shields, Joseph V., Kochanek, Christopher S., Holoien, Thomas W. -S., Shappee, Benjamin, Prieto, Jose L., Kojima, Tadashi, Nishimura, Hideo, Kaneko, Shizuo, Fujikawa, Shigehisa, Stubbings, Rod, Muyllaert, Eddy, Poyner, Gary, Moriyama, Masayuki, Maehara, Hiroyuki, Schmeer, Patrick, Denisenko, Denis
Continuing the project described by Kato et al. (2009, PASJ, 61, S395, arXiv/0905.1757), we collected times of superhump maxima for 102 SU UMa-type dwarf novae observed mainly during the 2017 season and characterized these objects. WZ Sge-type stars
Externí odkaz:
http://arxiv.org/abs/1911.04645
Autor:
Kimura, Mariko, Kato, Taichi, Maehara, Hiroyuki, Ishioka, Ryoko, Monard, Berto, Nakajima, Kazuhiro, Stone, Geoff, Pavlenko, Elena P., Antonyuk, Oksana I., Pit, Nikolai V., Sosnovskij, Aleksei A., Katysheva, Natalia, Richmond, Michael, Michel, Raúl, Matsumoto, Katsura, Kojiguchi, Naoto, Sugiura, Yuki, Tei, Shihei, Yamaura, Kenta, Cook, Lewis M., Sabo, Richard, Miller, Ian, Goff, William, Kiyota, Seiichiro, Shugarov, Sergey Yu., Golysheva, Polina, Vozyakova, Olga, Brincat, Stephen M., Itoh, Hiroshi, Tordai, Tamás, Littlefield, Colin, Pickard, Roger D., Tanabe, Kenji, Kinugawa, Kenzo, Honda, Satoshi, Taguchi, Hikaru, Hashimoto, Osamu, Nogami, Daisaku
There are several peculiar long-period dwarf-nova like objects, which show rare, low-amplitude outbursts with highly ionized emission lines. 1SWASP J162117$+$441254, BD Pav, and V364 Lib belong to this kind of objects. Some researchers even doubt whe
Externí odkaz:
http://arxiv.org/abs/1805.06974
Autor:
Pavlenko, Elena P., Kato, Taichi, Antonyuk, Oksana I., Ohshima, Tomohito, Hambsch, Franz-Josef, Antonyuk, Kirill A., Sosnovskij, Aleksei A., Baklanov, Alex V., Shugarov, Sergey Yu., Pit, Nikolaj V., Nakata, Chikako, Masi, Gianluca, Nakajima, Kazuhiro, Maehara, Hiroyuki, Dubovsky, Pavol A., Kudzej, Igor, Andreev, Maksim V., Kuznyetsova, Yuliana G., Vasiliskov, Kirill A.
We present photometric study of NY Ser, an in-the-gap SU UMa-type nova, in 2002 and 2013. We determined the duration of the superoutburst and the mean superhump period to be 18 d and 0.10458 d, respectively. We detected in 2013 that NY Ser showed two
Externí odkaz:
http://arxiv.org/abs/1408.4285
Autor:
Kato, Taichi, Hambsch, Franz-Josef, Maehara, Hiroyuki, Masi, Gianluca, Nocentini, Francesca, Dubovsky, Pavol A., Kudzej, Igor, Imamura, Kazuyoshi, Ogi, Minako, Tanabe, Kenji, Akazawa, Hidehiko, Krajci, Thomas, Miller, Ian, de Miguel, Enrique, Henden, Arne, Littlefield, Colin, Noguchi, Ryo, Ishibashi, Takehiro, Ono, Rikako, Kawabata, Miho, Kobayashi, Hiroshi, Sakai, Daisuke, Nishino, Hirochika, Furukawa, Hisami, Masumoto, Kazunari, Matsumoto, Katsura, Ohshima, Tomohito, Nakata, Chikako, Honda, Satoshi, Kinugasa, Kenzo, Hashimoto, Osamu, Stein, William, Pickard, Roger D., Kiyota, Seiichiro, Pavlenko, Elena P., Antonyuk, Oksana I., Baklanov, Aleksei V., Antonyuk, Kirill, Samsonov, Denis, Pit, Nikolaj, Sosnovskij, Aleksei, Oksanen, Arto, Harlingten, Caisey, Tyyska, Jenni, Monard, Berto, Shugarov, Sergey Yu., Chochol, Drahomir, Kasai, Kiyoshi, Maeda, Yutaka, Hirosawa, Kenji, Itoh, Hiroshi, Sabo, Richard, Ulowetz, Joseph, Morelle, Etienne, Michel, Raul, Suarez, Genaro, James, Nick, Dvorak, Shawn, Voloshina, Irina B., Richmond, Michael, Staels, Bart, Boyd, David, Andreev, Maksim V., Parakhin, Nikolai, Katysheva, Natalia, Miyashita, Atsushi, Nakajima, Kazuhiro, Bolt, Greg, Padovan, Stefano, Nelson, Peter, Starkey, Donn R., Buczynski, Denis, Starr, Peter, Goff, William N., Denisenko, Denis, Kochanek, Christopher S., Shappee, Benjamin, Stanek, Krzysztof Z., Prieto, Jose L., Itagaki, Koh-ichi, Kaneko, Shizuo, Stubbings, Rod, Muyllaert, Eddy, Shears, Jeremy, Schmeer, Patrick, Poyner, Gary, Marco, Miguel Rodriguez
Continuing the project described by Kato et al. (2009a, arXiv:0905.1757), we collected times of superhump maxima for SU UMa-type dwarf novae mainly observed during the 2012-2013 season. We found three objects (V444 Peg, CSS J203937 and MASTER J212624
Externí odkaz:
http://arxiv.org/abs/1310.7069
Publikováno v:
In Magnetic Resonance Imaging November 2019 63:170-177
Autor:
Tanaka, Jumpei, Nogami, Daisaku, Fujii, Mitsugu, Ayani, Kazuya, Kato, Taichi, Maehara, Hiroyuki, Kiyota, Seiichiro, Nakajima, Kazuhiro
We report on the spectral evolution of the enigmatic, very slow nova V5558 Sgr, based on the low-resolution spectra obtained at the Fujii-Bisei Observatory and the Bisei Astronomical Observatory, Japan during a period of 2007 April 6 to 2008 May 3. V
Externí odkaz:
http://arxiv.org/abs/1105.1614
Autor:
Arai, Akira, Uemura, Makoto, Kawabata, Koji S., Maehara, Hiroyuki, Nakajima, Kazuhiro, Kiyota, Seiichiro, Kato, Taichi, Ohsugi, Takashi, Yamashita, Takuya, Isogai, Mizuki, Nagae, Osamu, Chiyonobu, Shingo, Fukazawa, Yasushi, Mizuno, Tsunefumi, Katagiri, Hideaki, Takahashi, Hiromitsu, Okita, Kiichi, Yoshida, Michitoshi, Yanagisawa, Kenshi, Sato, Shuji, Kino, Masaru, Kitagawa, Masahiro, Sadakane, Kozo
We present optical and near-infrared (NIR) photometry of a classical nova, V2362 Cyg (= Nova Cygni 2006). V2362 Cyg experienced a peculiar rebrightening with a long duration from 100 to 240 d after the maximum of the nova. Our multicolor observation
Externí odkaz:
http://arxiv.org/abs/1008.0432
Autor:
Kato, Taichi, Imada, Akira, Uemura, Makoto, Nogami, Daisaku, Maehara, Hiroyuki, Ishioka, Ryoko, Baba, Hajime, Matsumoto, Katsura, Iwamatsu, Hidetoshi, Kubota, Kaori, Sugiyasu, Kei, Soejima, Yuichi, Moritani, Yuuki, Ohshima, Tomohito, Ohashi, Hiroyuki, Tanaka, Junpei, Sasada, Mahito, Arai, Akira, Nakajima, Kazuhiro, Kiyota, Seiichiro, Tanabe, Kenji, Imamura, Kayuyoshi, Kunitomi, Nanae, Kunihiro, Kenji, Taguchi, Hiroki, Koizumi, Mitsuo, Yamada, Norimi, Nishi, Yuichi, Kida, Mayumi, Tanaka, Sawa, Ueoka, Rie, Yasui, Hideki, Maruoka, Koichi, Henden, Arne, Oksanen, Arto, Moilanen, Marko, Tikkanen, Petri, Aho, Mika, Monard, Berto, Itoh, Hiroshi, Dubovsky, Pavol A., Kudzej, Igor, Dancikova, Radka, Vanmunster, Tonny, Pietz, Jochen, Bolt, Greg, Boyd, David, Nelson, Peter, Krajci, Thomas, Cook, Lewis M., Torii, Ken'ichi, Starkey, Donn R., Shears, Jeremy, Jensen, Lasse-Teist, Masi, Gianluca, Novak, Rudolf, Hynek, Tomas, Kocian, Radek, Kral, Lukas, Kucakova, Hana, Kolasa, Marek, Stastny, Petr, Staels, Bart
We systematically surveyed period variations of superhumps in SU UMa-type dwarf novae based on newly obtained data and past publications. In many systems, the evolution of superhump period are found to be composed of three distinct stages: early evol
Externí odkaz:
http://arxiv.org/abs/0905.1757
Autor:
Soejima, Yuichi, Nogami, Daisaku, Kato, Taichi, Uemura, Makoto, Imada, Akira, Sugiyasu, Kei, Maehara, Hiroyuki, Torii, Ken'ichi, Tanabe, Kenji, Oksanen, Arto, Nakajima, Kazuhiro, Novak, Rudolf, Masi, Gianluca, Hynek, Tomas, Martin, Brian, Buczynski, Denis, Pavlenko, Elena P., Shugarov, Sergei Yu., Cook, Lewis M.
We investigated the superhump evolution, analysing optical photometric observations of the 2000 February-March, the 2002 October-November, and the 2006 September superoutbursts of SW UMa. The superhumps evolved in the same way after their appearance
Externí odkaz:
http://arxiv.org/abs/0905.0348
Two classical novae V1493 Aql and V2362 Cyg were known to exhibit unprecedented large-amplitude rebrightening during the late stage of their evolution. We analyzed common properties in these two light curves. We show that these unusual light curves a
Externí odkaz:
http://arxiv.org/abs/0904.2228