Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Shugarov, Sergey Yu."'
Autor:
Tampo, Yusuke, Kato, Taichi, Kojiguchi, Naoto, Shugarov, Sergey Yu., Itoh, Hiroshi, Matsumoto, Katsura, Nakagawa, Momoka, Nishida, Yukitaka, Richmond, Michael, Shibata, Masaaki, Ito, Junpei, Kokhirova, Gulchehra, Rakhmatullaeva, Firuza, Tordai, Tamás, Kiyota, Seiichiro, Ruiz, Javier, Dubovsky, Pavol A., Medulka, Tomáš, Pavlenko, Elena P., Antonyuk, Oksana I., Sosnovskij, Aleksei A., Baklanov, Aleksei V., Krushevska, Viktoriia, Vanmunster, Tonny, Brincat, Stephen M., Petrik, Karol, Galdies, Charles, Hambsch, Franz-Josef, Maeda, Yutaka, Nogami, Daisaku
Superoutbursts in WZ Sge-type dwarf novae (DNe) are characterized by both early superhumps and ordinary superhumps originating from the 2:1 and 3:1 resonances, respectively. However, some WZ Sge-type DNe show a superoutburst lacking early superhumps;
Externí odkaz:
http://arxiv.org/abs/2303.17960
Autor:
Tampo, Yusuke, Isogai, Keisuke, Kojiguchi, Naoto, Maehara, Hiroyuki, Taguchi, Kenta, Kato, Taichi, Kimura, Mariko, Wakamatsu, Yasuyuki, Shibata, Masaaki, Nogami, Daisaku, Kawabata, Miho, Maeda, Keiichi, Namekata, Kosuke, Okamoto, Soshi, Otsuka, Masaaki, Umut, Burgaz, Nagoshi, Shumpei, Itoh, Hiroshi, Vanmunster, Tonny, Tordai, Tamas, Stone, Geoffrey, Matsumoto, Katsura, Fujii, Daiti, Matsumura, Ryota, Nakagawa, Momoka, Takeuchi, Nodoka, Zenkou, Yuki, Pavlenko, Elena P., Antonyuk, Kirill A., Pit, Nikolaj V., Antonyuk, Oksana I., Babina, Julia V., Baklanov, Aleksei V., Sosnovskij, Aleksei A., Shugarov, Sergey Yu., Katysheva, Nataly, Chochol, Drahomir, Dvorak, Shawn, Dubovsky, Pavol A., Medulka, Tomas, Kudzej, Igor, Kiyota, Seiichiro, Zubareva, Alexandra M., Belinski, Alexandr A., Ikonnikova, Natalia P., Burlak, Marina A., Sano, Yasuo, Mizutani, Masanori, Ruiz, Javier, pickard, Roger D., Franz-josef, Hambsch, Dufoer, Sjoerd, Brincat, Stephen M., Galdies, Charles, Menzies, Kenneth, Moriyama, Masayuki, Hiraga, Mitsutaka, Maeda, Yutaka, Hirosawa, Kenji, Funada, Masao, Yamamoto, Minoru
We present spectroscopic and photometric observations of 17 dwarf-nova superoutbursts obtained by KOOLS-IFU mounted on the 3.8 m telescope Seimei at Okayama Observatory of Kyoto University and through VSNET collaboration. Our spectroscopic observatio
Externí odkaz:
http://arxiv.org/abs/2104.04948
Autor:
Wakamatsu, Yasuyuki, Thorstensen, John R., Kojiguchi, Naoto, Isogai, Keisuke, Kimura, Mariko, Ohnishi, Ryuhei, Kato, Taichi, Itoh, Hiroshi, Sugiura, Yuki, Sumiya, Sho, Matsumoto, Hanami, Ito, Daiki, Nikai, Kengo, Akitaya, Hiroshi, Ishioka, Chihiro, Oide, Kohei, Kanai, Takahiro, Uzawa, Yoshinori, Oasa, Yumiko, Tordai, Tamás, Vanmunster, Tonny, Shugarov, Sergey Yu., Yamanaka, Masayuki, Sasada, Mahito, Takagi, Kengo, Nishinaka, Yuki, Yamazaki, Yuina, Otsubo, Ikki, Nakaoka, Tatsuya, Murata, Katsuhiro L., Ohsawa, Ryou, Morita, Masahiro, Ichiki, Makoto, Dufoer, Sjoerd, Mizutani, Masanori, Horiuchi, Takashi, Tozuka, Miyako, Takayama, Masaki, Ohshima, Tomohito, Saito, Tomoki, Dubovsky, Pavol A., Stone, Geoff, Miller, Ian, Nogami, Daisaku
We report photometric and spectroscopic observations of the eclipsing SU UMa-type dwarf nova ASASSN-18aan. We observed the 2018 superoutburst with 2.3 mag brightening and found the orbital period ($P_{\rm orb}$) to be 0.149454(3) d, or 3.59 hr. This
Externí odkaz:
http://arxiv.org/abs/2102.04104
Autor:
Kimura, Mariko, Isogai, Keisuke, Kato, Taichi, Kojiguchi, Naoto, Wakamatsu, Yasuyuki, Ohnishi, Ryuhei, Sugiura, Yuki, Matsumoto, Hanami, Sumiya, Sho, Ito, Daiki, Nikai, Kengo, Matsumoto, Katsura, Shugarov, Sergey Yu., Kathysheva, Natalia, Itoh, Hiroshi, Dubovsky, Pavol A., Kudzej, Igor, Akitaya, Hiroshi, Oide, Kohei, Kanai, Takahiro, Ishioka, Chihiro, Oasa, Yumiko, Vanmunster, Tonny, Oksanen, Arto, Tordai, Tamás, Murata, Katsuhiro L., Shiraishi, Kazuki, Adachi, Ryo, Oeda, Motoki, Tachibana, Yutaro, Kiyota, Seiichiro, Pavlenko, Elena P., Antonyuk, Kirill, Antonyuk, Oksana, Pit, Nikolai, Sosnovskij, Aleksei, Babina, Julia, Baklanov, Alex, Kawabata, Koji S., Kawabata, Miho, Nakaoka, Tatsuya, Yamanaka, Masayuki, Kasai, Kiyoshi, Miller, Ian, Brincat, Stephen M., Liu, Wei, Sasada, Mahito, Nogami, Daisaku
We report on the multi-wavelength photometry of the 2018 superoutburst in EG Cnc. We have detected stage A superhumps and long-lasting late-stage superhumps via the optical photometry and have constrained the binary mass ratio and its possible range.
Externí odkaz:
http://arxiv.org/abs/2008.11871
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
Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. IX: The Ninth Year (2016-2017)
Autor:
Kato, Taichi, Isogai, Keisuke, Hambsch, Franz-Josef, Vanmunster, Tonny, Itoh, Hiroshi, Monard, Berto, Tordai, Tamaas, Kimura, Mariko, Wakamatsu, Yasuyuki, Kiyota, Seiichiro, Miller, Ian, Starr, Peter, Kasai, Kiyoshi, Shugarov, Sergey Yu., Chochol, Drahomir, Katysheva, Natalia, Zaostrojnykh, Anna M., Sekeras, Matej, Kuznyetsova, Yuliana G., Kalinicheva, Eugenia S., Golysheva, Polina, Krushevska, Viktoriia, Maeda, Yutaka, Dubovsky, Pavol A., Kudzej, Igor, Pavlenko, Elena P., Antonyuk, Kirill A., Pit, Nikolaj V., Sosnovskij, Aleksei A., Antonyuk, Oksana I., Baklanov, Aleksei V., Pickard, Roger D., Kojiguchi, Naoto, Sugiura, Yuki, Tei, Shihei, Yamamura, Kenta, Matsumoto, Katsura, Ruiz, Javier, Stone, Geoff, Cook, Lewis M., de Miguel, Enrique, Akazawa, Hidehiko, Goff, William N., Morelle, Etienne, Kafka, Stella, Littlefield, Colin, Bolt, Greg, Dubois, Franky, Brincat, Stephen M., Maehara, Hiroyuki, Sakanoi, Takeshi, Kagitani, Masato, Imada, Akira, Voloshina, Irina B., Andreev, Maksim V., Sabo, Richard, Richmond, Michael, Rodda, Tony, Nelson, Peter, Nazarov, Sergey, Mishevskiy, Nikolay, Myers, Gordon, Denisenko, Denis, Stanek, Krzysztof Z., Shields, Joseph V., Kochanek, Christopher S., Holoien, Thomas W. -S., Shappee, Benjamin, Prieto, Jose L., Itagaki, Koh-ichi, Nishiyama, Koichi, Kabashima, Fujio, Stubbings, Rod, Schmeer, Patrick, Muyllaert, Eddy, Horie, Tsuneo, Shears, Jeremy, Poyner, Gary, Moriyama, Masayuki
Continuing the project described by Kato et al. (2009, arXiv:0905.1757), we collected times of superhump maxima for 127 SU UMa-type dwarf novae observed mainly during the 2016--2017 season and characterized these objects. We provide updated statistic
Externí odkaz:
http://arxiv.org/abs/1706.03870
Autor:
Kato, Taichi, Tordai, Tamas, Littlefield, Colin, Kasai, Kiyoshi, Shugarov, Sergey Yu., Katysheva, Natalia, Zaostrojnykh, Anna M., Pickard, Roger D., de Miguel, Enrique, Antonyuk, Kirill, Antonyuk, Oksana, Pavlenko, Elena P., Pit, Nikolai, Itoh, Hiroshi, Ruiz, Javier, Isogai, Keisuke, Kimura, Mariko, Wakamatsu, Yasuyuki, Vanmunster, Tonny, Stone, Geoff
We observed the 2016 outburst of OT J002656.6+284933 (CSS101212:002657+284933) and found that it has the longest recorded [0.13225(1) d in average] superhumps among SU UMa-type dwarf novae. The object is the third known SU UMa-type dwarf nova above t
Externí odkaz:
http://arxiv.org/abs/1703.00650
Autor:
Namekata, Kosuke, Isogai, Keisuke, Kato, Taichi, Littlefield, Colin, Matsumoto, Katsura, Kojiguchi, Naoto, Sugiura, Yuki, Uto, Yusuke, Fukushima, Daiki, Tatsumi, Taiki, Yamada, Eiji, Kamibetsunawa, Taku, de Miguel, Enrique, Stein, William L., Sabo, Richard, Andreev, Maksim V., Morelle, Etienne, Pavlenko, E. P., Babina, Julia V., Baklanov, Alex V., Antonyuk, Kirill A., Antonyuk, Okasana I., Sosnovskij, Aleksei A., Shugarov, Sergey Yu., Golysheva, Polina Yu., Gladilina, Natalia G., Miller, Ian, Neustroev, Vitaly V., Chavushyan, Vahram, Valdes, Jose R., Sjoberg, George, Maeda, Yutaka, Itoh, Hiroshi, Masi, Gianluca, Michel, Raul, Dubovsky, Pavol A., Kiyota, Seiichiro, Tordai, Tamas, Oksanen, Arto, Ruiz, Javier, Nogami, Daisaku
We report on a superoutburst of a WZ Sge-type dwarf nova (DN), ASASSN-15po. The light curve showed the main superoutburst and multiple rebrightenings. In this outburst, we observed early superhumps and growing (stage A) superhumps with periods of 0.0
Externí odkaz:
http://arxiv.org/abs/1610.04941
Autor:
Kato, Taichi, Ishioka, Ryoko, Isogai, Keisuke, Kimura, Mariko, Imada, Akira, Miller, Ian, Masumoto, Kazunari, Nishino, Hirochika, Kojiguchi, Naoto, Kawabata, Miho, Sakai, Daisuke, Sugiura, Yuki, Furukawa, Hisami, Yamamura, Kenta, Kobayashi, Hiroshi, Matsumoto, Katsura, Wang, Shiang-Yu, Chou, Yi, Ngeow, Chow-Choong, Chen, Wen-Ping, Panwar, Neelam, Lin, Chi-Sheng, Hsiao, Hsiang-Yao, Guo, Jhen-Kuei, Lin, Chien-Cheng, Omarov, Chingis, Kusakin, Anatoly, Krugov, Maxim, Starkey, Donn R., Pavlenko, Elena P., Antonyuk, Kirill A., Sosnjvskij, Aleksei A., Antonyuk, Oksana I., Pit, Nikolai V., Baklanov, Alex V., Babina, Julia V., Itoh, Hiroshi, Padovan, Stefano, Akazawa, Hidehiko, Kafka, Stella, de Miguel, Enrique, Pickard, Roger D., Kiyota, Seiichiro, Shugarov, Sergey Yu., Chochol, Drahomir, Krushevska, Viktoriia, Sekeras, Matej, Pikalova, Olga, Sabo, Richard, Dubovsky, Pavol A., Kudzej, Igor, Ulowetz, Joseph, Dvorak, Shawn, Stone, Geoff, Tordai, Tamas, Dubois, Franky, Logie, Ludwig, Rau, Steve, Vanaverbeke, Siegfried, Vanmunster, Tonny, Oksanen, Arto, Maeda, Yutaka, Kasai, Kiyoshi, Katysheva, Natalia, Morelle, Etienne, Neustroev, Vitaly V., Sjoberg, George
We observed RZ LMi, which is renowned for the extremely (~19d) short supercycle and is a member of a small, unusual class of cataclysmic variables called ER UMa-type dwarf novae, in 2013 and 2016. In 2016, the supercycles of this object substantially
Externí odkaz:
http://arxiv.org/abs/1609.08791