Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Kengo Nikai"'
Autor:
Sho Sumiya, Mariko Kimura, Daisaku Nogami, Yoshinori Uzawa, Daiki Ito, Geoff Stone, Ikki Otsubo, Taichi Kato, Yuki Nishinaka, Kengo Nikai, Takahiro Kanai, Hanami Matsumoto, Ryou Ohsawa, Chihiro Ishioka, Tonny Vanmunster, Yuina Yamazaki, Mahito Sasada, Tatsuya Nakaoka, Sjoerd Dufoer, Tamás Tordai, Sergey Yu. Shugarov, Masanori Mizutani, Naoto Kojiguchi, Hiroshi Itoh, Ryuhei Ohnishi, Pavol A. Dubovsky, Yuki Sugiura, Hiroshi Akitaya, Masahiro Morita, Tomohito Ohshima, Makoto Ichiki, K. L. Murata, Yumiko Oasa, Miyako Tozuka, Kohei Oide, Takashi Horiuchi, Ian Miller, Yasuyuki Wakamatsu, T. Saito, John R. Thorstensen, Kengo Takagi, Masaki Takayama, Masayuki Yamanaka, Keisuke Isogai
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e0f32d0067f10f20fdbc2f42b5d6355
Autor:
Stephen M. Brincat, Julia V. Babina, Ryo Adachi, Tatsuya Nakaoka, Kengo Nikai, Naoto Kojiguchi, Tonny Vanmunster, Seiichiro Kiyota, Mahito Sasada, Katsura Matsumoto, Daiki Ito, Kirill A. Antonyuk, Natalia Katysheva, Sho Sumiya, Ryuhei Ohnishi, Chihiro Ishioka, Mariko Kimura, Hanami Matsumoto, Sergey Yu. Shugarov, Igor Kudzej, Kohei Oide, Hiroshi Akitaya, Tamás Tordai, Motoki Oeda, Daisaku Nogami, Pavol A. Dubovsky, Takahiro Kanai, K. L. Murata, Elena P. Pavlenko, Alex Baklanov, Koji S. Kawabata, Aleksei A. Sosnovskij, Yuki Sugiura, Taichi Kato, Kiyoshi Kasai, Kazuki Shiraishi, Yutaro Tachibana, Ian Miller, Oksana I. Antonyuk, Yasuyuki Wakamatsu, Hiroshi Itoh, Masayuki Yamanaka, Wei Liu, Keisuke Isogai, Miho Kawabata, Nikolai Pit, Arto Oksanen, Yumiko Oasa, Yoshinori Uzawa
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ff2078621fc595dbc32f98a5c58d964
Autor:
Elena P. Pavlenko, Yuki Sugiura, Hiroshi Itoh, Sho Sumiya, Mariko Kimura, Yasuyuki Wakamatsu, Alex Baklanov, Katsura Matsumoto, Taichi Kato, Naoto Kojiguchi, Keito Niijima, Tomohiro Yoshitake, Hanami Matsumoto, Tonny Vanmunster, Ryuhei Ohnishi, Oksana I. Antonyuk, Berto Monard, Keisuke Isogai, Franz-Josef Hambsch, Daiki Ito, Julia V. Babina, Kengo Nikai, Shawn Dvorak
IW And stars are a recently recognized group of dwarf novae which are characterized by a repeated sequence of brightening from a standstill-like phase with damping oscillations followed by a deep dip. Kimura et al. (2019) recently proposed a model ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d119c231207ce1c7fdaef226855892ca
http://arxiv.org/abs/1911.01587
http://arxiv.org/abs/1911.01587
Autor:
Taichi Kato, Katsura Matsumoto, Vasyl O. Ponomarenko, Ian Miller, Roman Zhuchkov, Stephen M. Brincat, Kiyoshi Kasai, V. Vasylenko, Kenneth Menzies, Keisuke Isogai, Yuki Sugiura, Shawn Dvorak, Elena P. Pavlenko, A. Simon, Daiki Ito, Volodymyr A. Kozlov, Enrique de Miguel, Pavol A. Dubovsky, Aleksandr Sklyanov, Kirill A. Antonyuk, A. Baransky, Oksana I. Antonyuk, Inna O. Izviekova, Igor Kudzej, Aleksandr V. Sergeev, Aleksei V. Baklanov, Julia V. Babina, Yaroslav O. Romanjuk, Yutaka Maeda, Tomas Medulka, Aleksei A. Sosnovskij, Ryuhei Ohnishi, Nikolaj V. Pit, Hanami Matsumoto, Naoto Kojiguchi, Kengo Nikai, Sho Sumiya, Sergey P. Belan, A. G. Gutaev, Yasuyuki Wakamatsu, Takaaki Seki, Roger D. Pickard, V. Godunova
We found that the SU UMa-type dwarf nova NY Ser in the period gap [orbital period 0.097558(6) d] showed standstills twice in 2018. This is the first clear demonstration of a standstill occurring between superoutbursts of an SU UMa-type dwarf nova. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::996d439ae148a43ce1ed7dda3cd264f7
http://arxiv.org/abs/1901.05100
http://arxiv.org/abs/1901.05100