Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Shugarov, Sergey"'
Autor:
Tampo, Yusuke, Kato, Taichi, Isogai, Keisuke, Kimura, Mariko, Kojiguchi, Naoto, Nogami, Daisaku, Ito, Junpei, Shibata, Masaaki, Yamanaka, Masayuki, Taguchi, Kenta, Maehara, Hiroyuki, Itoh, Hiroshi, Matsumoto, Katsura, Nakagawa, Momoka, Nishida, Yukitaka, Dvorak, Shawn, Murata, Katsuhiro L., Hosokawa, Ryohei, Imai, Yuri, Ito, Naohiro, Niwano, Masafumi, Sato, Shota, Noto, Ryotaro, Yamaguchi, Ryodai, Schramm, Malte, Oasa, Yumiko, Kanai, Takahiro, Sasaki, Yu, Tordai, Tamás, Vanmunster, Tonny, Kiyota, Seiichiro, Katysheva, Nataly, Shugarov, Sergey Yu., Zubareva, Alexandra M., Antipin, Sergei, Ikonnikova, Natalia, Belinski, Alexandr, Dubovsky, Pavol A., Medulka, Tomáš, Takahashi, Jun, Takayama, Masaki, Ohshima, Tomohito, Saito, Tomoki, Tozuka, Miyako, Sako, Shigeyuki, Tanaka, Masaomi, Tominaga, Nozomu, Horiuchi, Takashi, Hanayama, Hidekazu, Reichart, Daniel E., Kouprianov, Vladimir V., Davidson Jr, James W., Caton, Daniel B., Romanov, Filipp D., Lane, David J., Hambsch, Franz-josef, Narita, Norio, Fukui, Akihiko, Ikoma, Masahiro, Tamura, Motohide, Kawabata, Koji S., Nakaoka, Tatsuya, Imazawa, Ryo
We present a detailed study of the MASTER OT J030227.28+191754.5 outburst in 2021-2022, reaching an amplitude of 10.2 mag and a duration of 60 d. The detections of (1) the double-peaked optical emission lines, and (2) the early and ordinary superhump
Externí odkaz:
http://arxiv.org/abs/2408.13783
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:
Sun, Bangzheng, Orio, Marina, Dobrotka, Andrej, Luna, Gerardo Juan Manuel, Shugarov, Sergey, Zemko, Polina
We present X-ray observations of novae V2491 Cyg and KT Eri about 9 years post-outburst, of the dwarf nova and post-nova candidate EY Cyg, and of a VY Scl variable. The first three objects were observed with XMM-Newton, KT Eri also with the Chandra A
Externí odkaz:
http://arxiv.org/abs/2009.14619
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:
Chochol, Drahomír, Shugarov, Sergey, Hambálek, Ľubomír, Skopal, Augustin, Parimucha, Štefan, Dubovský, Pavol
Publikováno v:
2019, Proceedings of Science GOLDEN2019, 29
On 2018, April 29, a bright classical nova (CN) Per 2018 was discovered. Its progenitor is a well-known dwarf nova V392 Per. In this contribution, we analyze $UBVR_{C}I_{C}$ photometry and optical spectroscopy of the CN V392 Per. From the $V$ light c
Externí odkaz:
http://arxiv.org/abs/2007.13337
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
Akademický článek
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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