Related papers: Newly arising problems in the research of SU UMa-t…

Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. VIII: The Eighth Year (2015-2016)

Continuing the project described by Kato et al. (2009, arXiv:0905.1757), we collected times of superhump maxima for 128 SU UMa-type dwarf novae observed mainly during the 2015-2016 season and characterized these objects. The data have…

Solar and Stellar Astrophysics · Physics 2016-07-20 Taichi Kato , Franz-Josef Hambsch , Berto Monard , Tonny Vanmunster , Yutaka Maeda , Ian Miller , Hiroshi Itoh , Seiichiro Kiyota , Keisuke Isogai , Mariko Kimura , Akira Imada , Tamas Tordai , Hidehiko Akazawa , Kenji Tanabe , Noritoshi Otani , Minako Ogi , Kazuko Ando , Naoki Takigawa , Pavol A. Dubovsky , Igor Kudzej , Sergey Yu. Shugarov , Natalia Katysheva , Polina Golysheva , Natalia Gladilina , Drahomir Chochol , Peter Starr , Kiyoshi Kasai , Roger D. Pickard , Enrique de Miguel , Naoto Kojiguchi , Yuki Sugiura , Daiki Fukushima , Eiji Yamada , Yusuke Uto , Taku Kamibetsunawa , Taiki Tatsumi , Nao Takeda , Katsura Matsumoto , Lewis M. Cook , Elena P. Pavlenko , Julia V. Babina , Nikolaj V. Pit , Oksana I. Antonyuk , Kirill A. Antonyuk , Aleksei A. Sosnovskij , Aleksei V. Baklanov , Stella Kafka , William Stein , Irina B. Voloshina , Javier Ruiz , Richard Sabo , Shawn Dvorak , Geoff Stone , Maksim V. Andreev , Sergey V. Antipin , Alexandra M. Zubareva , Anna M. Zaostrojnykh , Michael Richmond , Jeremy Shears , Franky Dubois , Ludwig Logie , Steve Rau , Siegfried Vanaverbeke , Andrei Simon , Arto Oksanen , William N. Goff , Greg Bolt , Bartomiej Debski , Christopher S. Kochanek , Benjamin Shappee , Krzysztof Z. Stanek , Jose L. Prieto , Rod Stubbings , Eddy Muyllaert , Mitsutaka Hiraga , Tsuneo Horie , Patrick Schmeer , Kenji Hirosawa

Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. X: The Tenth Year (2017)

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…

Solar and Stellar Astrophysics · Physics 2020-02-19 Taichi Kato , Keisuke Isogai , Yasuyuki Wakamatsu , Franz-Josef Hambsch , Hiroshi Itoh , Tamas Tordai , Tonny Vanmunster , Pavol A. Dubovsky , Igor Kudzej , Tomas Medulka , Mariko Kimura , Ryuhei Ohnishi , Berto Monard , Elena P. Pavlenko , Kirill A. Antonyuk , Nikolaj V. Pit , Oksana I. Antonyuk , Julia V. Babina , Aleksei V. Baklanov , Aleksei A. Sosnovskij , Roger D. Pickard , Ian Miller , Yutaka Maeda , Enrique de Miguel , Stephen M. Brincat , Domenico Licchelli , Lewis M. Cook , Sergey Yu. Shugarov , Anna M. Zaostrojnykh , Drahomir Chochol , Polina Golysheva , Natalia Katysheva , Alexandra M. Zubareva , Geoff Stone , Kiyoshi Kasai , Peter Starr , Colin Littlefield , Seiichiro Kiyota , Maksim V. Andreev , Alexandr V. Sergeev , Javier Ruiz , Gordon Myers , Andrii O. Simon , Volodymyr V. Vasylenko , Francisco Soldan , Yenal Ogmen , Kazuhiro Nakajima , Peter Nelson , Gianluca Masi , Kenneth Menzies , Richard Sabo , Greg Bolt , Shawn Dvorak , Krzysztof Z. Stanek , Joseph V. Shields , Christopher S. Kochanek , Thomas W. -S. Holoien , Benjamin Shappee , Jose L. Prieto , Tadashi Kojima , Hideo Nishimura , Shizuo Kaneko , Shigehisa Fujikawa , Rod Stubbings , Eddy Muyllaert , Gary Poyner , Masayuki Moriyama , Hiroyuki Maehara , Patrick Schmeer , Denis Denisenko

Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae

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:…

Solar and Stellar Astrophysics · Physics 2017-06-07 Taichi Kato , Akira Imada , Makoto Uemura , Daisaku Nogami , Hiroyuki Maehara , Ryoko Ishioka , Hajime Baba , Katsura Matsumoto , Hidetoshi Iwamatsu , Kaori Kubota , Kei Sugiyasu , Yuichi Soejima , Yuuki Moritani , Tomohito Ohshima , Hiroyuki Ohashi , Junpei Tanaka , Mahito Sasada , Akira Arai , Kazuhiro Nakajima , Seiichiro Kiyota , Kenji Tanabe , Kayuyoshi Imamura , Nanae Kunitomi , Kenji Kunihiro , Hiroki Taguchi , Mitsuo Koizumi , Norimi Yamada , Yuichi Nishi , Mayumi Kida , Sawa Tanaka , Rie Ueoka , Hideki Yasui , Koichi Maruoka , Arne Henden , Arto Oksanen , Marko Moilanen , Petri Tikkanen , Mika Aho , Berto Monard , Hiroshi Itoh , Pavol A. Dubovsky , Igor Kudzej , Radka Dancikova , Tonny Vanmunster , Jochen Pietz , Greg Bolt , David Boyd , Peter Nelson , Thomas Krajci , Lewis M. Cook , Ken'ichi Torii , Donn R. Starkey , Jeremy Shears , Lasse-Teist Jensen , Gianluca Masi , Rudolf Novak , Tomas Hynek , Radek Kocian , Lukas Kral , Hana Kucakova , Marek Kolasa , Petr Stastny , Bart Staels

Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. VII: The Seventh Year (2014-2015)

Continuing the project described by Kato et al. (2009, arXiv:0905.1757), we collected times of superhump maxima for 102 SU UMa-type dwarf novae observed mainly during the 2014-2015 season and characterized these objects. Our project has…

Solar and Stellar Astrophysics · Physics 2015-10-21 Taichi Kato , Franz-Josef Hambsch , Pavol A. Dubovsky , Igor Kudzej , Berto Monard , Ian Miller , Hiroshi Itoh , Seiichiro Kiyota , Kazunari Masumoto , Daiki Fukushima , Hiroki Kinoshita , Kazuki Maeda , Jyunya Mikami , Risa Matsuda , Naoto Kojiguchi , Miho Kawabata , Megumi Takenaka , Katsura Matsumoto , Enrique de Miguel , Yutaka Maeda , Tomohito Ohshima , Keisuke Isogai , Roger D. Pickard , Arne Henden , Stella Kafka , Hidehiko Akazawa , Noritoshi Otani , Sakiko Ishibashi , Minako Ogi , Kenji Tanabe , Kazuyoshi Imamura , William Stein , Kiyoshi Kasai , Tonny Vanmunster , Peter Starr , Elena P. Pavlenko , Oksana I. Antonyuk , Kirill A. Antonyuk , Aleksei A. Sosnovskij , Nikolaj V. Pit , Julia V. Babina , Aleksandr Sklyanov , Rudolf Novak , Arto Oksanen , Shawn Dvorak , Raul Michel , Gianluca Masi , Colin Littlefield , Joseph Ulowetz , Sergey Yu. Shugarov , Polina Yu. Golysheva , Drahomir Chochol , Viktoriia Krushevska , Javier Ruiz , Tamas Tordai , Etienne Morelle , Richard Sabo , Hiroyuki Maehara , Michael Richmond , Natalia Katysheva , Kenji Hirosawa , William N. Goff , Franky Dubois , Ludwig Logie , Steve Rau , Irina B. Voloshina , Maksim V. Andreev , Kazuhiko Shiokawa , Vitaly V. Neustroev , George Sjoberg , Sergey Zharikov , Nick James , Greg Bolt , Tim Crawford , Denis Buczynski , Lewis M. Cook , Christopher S. Kochanek , Benjamin Shappee , Krzysztof Z. Stanek , Jose L. Prieto , Denis Denisenko , Hideo Nishimura , Masaru Mukai , Shizuo Kaneko , Seiji Ueda , Rod Stubbings , Masayuki Moriyama , Patrick Schmeer , Eddy Muyllaert , Jeremy Shears , Robert J. Modic , Kevin B. Paxson

Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. V: The Fifth Year (2012-2013)

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…

Solar and Stellar Astrophysics · Physics 2016-04-20 Taichi Kato , Franz-Josef Hambsch , Hiroyuki Maehara , Gianluca Masi , Francesca Nocentini , Pavol A. Dubovsky , Igor Kudzej , Kazuyoshi Imamura , Minako Ogi , Kenji Tanabe , Hidehiko Akazawa , Thomas Krajci , Ian Miller , Enrique de Miguel , Arne Henden , Colin Littlefield , Ryo Noguchi , Takehiro Ishibashi , Rikako Ono , Miho Kawabata , Hiroshi Kobayashi , Daisuke Sakai , Hirochika Nishino , Hisami Furukawa , Kazunari Masumoto , Katsura Matsumoto , Tomohito Ohshima , Chikako Nakata , Satoshi Honda , Kenzo Kinugasa , Osamu Hashimoto , William Stein , Roger D. Pickard , Seiichiro Kiyota , Elena P. Pavlenko , Oksana I. Antonyuk , Aleksei V. Baklanov , Kirill Antonyuk , Denis Samsonov , Nikolaj Pit , Aleksei Sosnovskij , Arto Oksanen , Caisey Harlingten , Jenni Tyyska , Berto Monard , Sergey Yu. Shugarov , Drahomir Chochol , Kiyoshi Kasai , Yutaka Maeda , Kenji Hirosawa , Hiroshi Itoh , Richard Sabo , Joseph Ulowetz , Etienne Morelle , Raul Michel , Genaro Suarez , Nick James , Shawn Dvorak , Irina B. Voloshina , Michael Richmond , Bart Staels , David Boyd , Maksim V. Andreev , Nikolai Parakhin , Natalia Katysheva , Atsushi Miyashita , Kazuhiro Nakajima , Greg Bolt , Stefano Padovan , Peter Nelson , Donn R. Starkey , Denis Buczynski , Peter Starr , William N. Goff , Denis Denisenko , Christopher S. Kochanek , Benjamin Shappee , Krzysztof Z. Stanek , Jose L. Prieto , Koh-ichi Itagaki , Shizuo Kaneko , Rod Stubbings , Eddy Muyllaert , Jeremy Shears , Patrick Schmeer , Gary Poyner , Miguel Rodriguez Marco

Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. IV: The Fourth Year (2011-2012)

Continuing the project described by Kato et al. (2009, arXiv:0905.1757), we studied 86 SU UMa-type dwarf novae. We confirmed the general trends such as the relation between period derivatives and orbital periods. There are some systems…

Solar and Stellar Astrophysics · Physics 2015-06-11 Taichi Kato , Franz-Josef Hambsch , Hiroyuki Maehara , Gianluca Masi , Ian Miller , Ryo Noguchi , Chihiro Akasaka , Tomoya Aoki , Hiroshi Kobayashi , Katsura Matsumoto , Shinichi Nakagawa , Takuma Nakazato , Takashi Nomoto , Kazuyuki Ogura , Rikako Ono , Keisuke Taniuchi , William Stein , Arne Henden , Enrique de Miguel , Seiichiro Kiyota , Pavol A. Dubovsky , Igor Kudzej , Kazuyoshi Imamura , Hidehiko Akazawa , Ryosuke Takagi , Yuya Wakabayashi , Minako Ogi , Kenji Tanabe , Joseph Ulowetz , Etienne Morelle , Roger D. Pickard , Tomohito Ohshima , Kiyoshi Kasai , Elena P. Pavlenko , Oksana I. Antonyuk , Aleksei V. Baklanov , Kirill Antonyuk , Denis Samsonov , Nikolaj Pit , Aleksei Sosnovskij , Colin Littlefield , Richard Sabo , Javier Ruiz , Thomas Krajci , Shawn Dvorak , Arto Oksanen , Kenji Hirosawa , William N. Goff , Berto Monard , Jeremy Shears , David Boyd , Irina B. Voloshina , Sergey Yu. Shugarov , Drahomir Chochol , Atsushi Miyashita , Jochen Pietz , Natalia Katysheva , Hiroshi Itoh , Greg Bolt , Maksim V. Andreev , Nikolai Parakhin , Viktor Malanushenko , Fabio Martinelli , Denis Denisenko , Chris Stockdale , Peter Starr , Mike Simonsen , Paul. J. Tristram , Akihiko Fukui , Tamas Tordai , Robert Fidrich , Kevin B. Paxson , Koh-ichi Itagaki , Youichirou Nakashima , Seiichi Yoshida , Hideo Nishimura , Timur V. Kryachko , Andrey V. Samokhvalov , Stanislav A. Korotkiy , Boris L. Satovski , Rod Stubbings , Gary Poyner , Eddy Muyllaert , Vladimir Gerke , Walter MacDonald , Michael Linnolt , Yutaka Maeda , Hubert Hautecler

Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. VI: The Sixth Year (2013-2014)

Continuing the project described by Kato et al. (2009, PASJ, 61, S395, arXiv:0905.1757), we collected times of superhump maxima for 56 SU UMa-type dwarf novae mainly observed during the 2013-2014 season and characterized these objects. We…

Solar and Stellar Astrophysics · Physics 2015-06-22 Taichi Kato , Pavol A. Dubovsky , Igor Kudzej , Franz-Josef Hambsch , Ian Miller , Tomohito Ohshima , Chikako Nakata , Miho Kawabata , Hirochika Nishino , Kazunari Masumoto , Sahori Mizoguchi , Masayuki Yamanaka , Katsura Matsumoto , Daisuke Sakai , Daiki Fukushima , Minami Matsuura , Genki Bouno , Megumi Takenaka , Shinichi Nakagawa , Ryo Noguchi , Eriko Iino , Roger D. Pickard , Yutaka Maeda , Arne Henden , Kiyoshi Kasai , Seiichiro Kiyota , Hidehiko Akazawa , Kazuyoshi Imamura , Enrique de Miguel , Hiroyuki Maehara , Berto Monard , Elena P. Pavlenko , Kirill Antonyuk , Nikolaj Pit , Oksana I. Antonyuk , Aleksei V. Baklanov , Javier Ruiz , Michael Richmond , Arto Oksanen , Caisey Harlingten , Sergey Yu. Shugarov , Drahomir Chochol , Gianluca Masi , Francesca Nocentini , Patrick Schmeer , Greg Bolt , Peter Nelson , Joseph Ulowetz , Richard Sabo , William N. Goff , William Stein , Raul Michel , Shawn Dvorak , Irina B. Voloshina , Vladimir Metlov , Natalia Katysheva , Vitaly V. Neustroev , George Sjoberg , Colin Littlefield , Bartlomiej Debski , Paulina Sowicka , Marcin Klimaszewski , Malgorzata Curylo , Etienne Morelle , Ivan A. Curtis , Hidetoshi Iwamatsu , Neil D. Butterworth , Maksim V. Andreev , Nikolai Parakhin , Aleksandr Sklyanov , Kazuhiko Shiokawa , Rudolf Novak , Tat'yana R. Irsmambetova , Hiroshi Itoh , Yoshiharu Ito , Kenji Hirosawa , Denis Denisenko , Christopher S. Kochanek , Benjamin Shappee , Krzysztof Z. Stanek , Jose L. Prieto , Koh-ichi Itagaki , Rod Stubbings , Jose Ripero , Eddy Muyllaert , Gary Poyner

Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. II: The Second Year (2009-2010)

As an extension of the project in Kato et al. (2009, arXiv:0905.1757), we collected times of superhump maxima for 61 SU UMa-type dwarf novae mainly observed during the 2009-2010 season. The newly obtained data confirmed the basic findings…

Solar and Stellar Astrophysics · Physics 2015-05-20 Taichi Kato , Hiroyuki Maehara , Makoto Uemura , Arne Henden , Enrique de Miguel , Ian Miller , Pavol A. Dubovsky , Igor Kudzej , Seiichiro Kiyota , Franz-Josef Hambsch , Kenji Tanabe , Kazuyoshi Imamura , Nanae Kunitomi , Ryosuke Takagi , Mikiha Nose , Hidehiko Akazawa , Gianluca Masi , Shinichi Nakagawa , Eriko Iino , Ryo Noguchi , Katsura Matsumoto , Daichi Fujii , Hiroshi Kobayashi , Kazuyuki Ogura , Sachi Ohtomo , Kousei Yamashita , Hirofumi Yanagisawa , Hiroshi Itoh , Greg Bolt , Berto Monard , Tomohito Ohshima , Jeremy Shears , Javier Ruiz , Akira Imada , Arto Oksanen , Peter Nelson , Tomas L. Gomez , Bart Staels , David Boyd , Irina B. Voloshina , Thomas Krajci , Tim Crawford , Chris Stockdale , Michael Richmond , Etienne Morelle , Rudolf Novak , Daisaku Nogami , Ryoko Ishioka , Steve Brady , Mike Simonsen , Elena P. Pavlenko , Frederick A. Ringwald , Tetsuya Kuramoto , Atsushi Miyashita , Roger D. Pickard , Tomas Hynek , Shawn Dvorak , Rod Stubbings , Eddy Muyllaert

Discovery of a Dwarf Nova Breaking the Standard Sequence of Compact Binary Evolution

We revealed that the dwarf nova 1RXS J232953.9+062814 is an SU UMa-type system with a superhump period of 66.774+/-0.010 min. The short period strongly indicates that the orbital period of this object is below the period minimum of…

Astrophysics · Physics 2015-06-24 M. Uemura , T. Kato , R. Ishioka , the VSNET collaboration team

Photometric Studies of a WZ Sge-Type Dwarf Nova Candidate, ASAS160048-4846.2

We report on our time-resolved CCD photometry during the 2005 June superoutburst of a WZ Sge-type dwarf nova candidate, ASAS 160048-4846.2. The ordinary superhumps underwent a complex evolution during the superoutburst. The superhump…

Astrophysics · Physics 2015-05-13 Yuichi Soejima , Akira Imada , Daisaku Nogami , Taichi Kato , L. A. G. Berto Monard

Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. IX: The Ninth Year (2016-2017)

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…

Solar and Stellar Astrophysics · Physics 2017-10-11 Taichi Kato , Keisuke Isogai , Franz-Josef Hambsch , Tonny Vanmunster , Hiroshi Itoh , Berto Monard , Tamaas Tordai , Mariko Kimura , Yasuyuki Wakamatsu , Seiichiro Kiyota , Ian Miller , Peter Starr , Kiyoshi Kasai , Sergey Yu. Shugarov , Drahomir Chochol , Natalia Katysheva , Anna M. Zaostrojnykh , Matej Sekeras , Yuliana G. Kuznyetsova , Eugenia S. Kalinicheva , Polina Golysheva , Viktoriia Krushevska , Yutaka Maeda , Pavol A. Dubovsky , Igor Kudzej , Elena P. Pavlenko , Kirill A. Antonyuk , Nikolaj V. Pit , Aleksei A. Sosnovskij , Oksana I. Antonyuk , Aleksei V. Baklanov , Roger D. Pickard , Naoto Kojiguchi , Yuki Sugiura , Shihei Tei , Kenta Yamamura , Katsura Matsumoto , Javier Ruiz , Geoff Stone , Lewis M. Cook , Enrique de Miguel , Hidehiko Akazawa , William N. Goff , Etienne Morelle , Stella Kafka , Colin Littlefield , Greg Bolt , Franky Dubois , Stephen M. Brincat , Hiroyuki Maehara , Takeshi Sakanoi , Masato Kagitani , Akira Imada , Irina B. Voloshina , Maksim V. Andreev , Richard Sabo , Michael Richmond , Tony Rodda , Peter Nelson , Sergey Nazarov , Nikolay Mishevskiy , Gordon Myers , Denis Denisenko , Krzysztof Z. Stanek , Joseph V. Shields , Christopher S. Kochanek , Thomas W. -S. Holoien , Benjamin Shappee , Jose L. Prieto , Koh-ichi Itagaki , Koichi Nishiyama , Fujio Kabashima , Rod Stubbings , Patrick Schmeer , Eddy Muyllaert , Tsuneo Horie , Jeremy Shears , Gary Poyner , Masayuki Moriyama

BO Ceti: Dwarf Nova Showing Both IW And and SU UMa-Type Features

IW And stars are a recently recognized subgroup of dwarf novae which are characterized by (often repetitive) slowly rising standstills terminated by brightening, but the exact mechanism for this variation is not yet identified. We have…

Solar and Stellar Astrophysics · Physics 2021-08-04 Taichi Kato , Yusuke Tampo , Naoto Kojiguchi , Masaaki Shibata , Junpei Ito , Keisuke Isogai , Hiroshi Itoh , Franz-Josef Hambsch , Berto Monard , Seiichiro Kiyota , Tonny Vanmunster , Aleksei A. Sosnovskij , Elena P. Pavlenko , Pavol A. Dubovsky , Igor Kudzej , Tomas Medulka

ASASSN-24hd; a dwarf nova bridging WZ Sge-type and SU UMa-type superoutbursts

WZ Sge-type dwarf novae (DNe) form a subclass in cataclysmic variables, characterized by short-period variations called superhumps during an outburst. Here we present optical ground-based and TESS observations of ASASSN-24hd in its…

Solar and Stellar Astrophysics · Physics 2025-04-30 Yusuke Tampo , Naoto Kojiguchi , Taichi Kato , Mariko Kimura , David. A. H. Buckley , Berto Monard , Franz-Josef Hambsch , Katsuki Muraoka , Daisaku Nogami , Stephen B. Potter , Anke Van Dyk , Patrick Woudt

Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. III: The Third Year (2010--2011)

Continuing the project described by Kato et al. (2009, PASJ 61, S395, arXiv:0905.1757), we collected times of superhump maxima for 51 SU UMa-type dwarf novae mainly observed during the 2010-2011 season. Although most of the new data for…

Solar and Stellar Astrophysics · Physics 2015-05-30 Taichi Kato , Hiroyuki Maehara , Ian Miller , Tomohito Ohshima , Enrique de Miguel , Kenji Tanabe , Kazuyoshi Imamura , Hidehiko Akazawa , Nanae Kunitomi , Ryosuke Takagi , Mikiha Nose , Franz-Josef Hambsch , Seiichiro Kiyota , Elena P. Pavlenko , Aleksei V. Baklanov , Oksana I. Antonyuk , Denis Samsonov , Aleksei Sosnovskij , Kirill Antonyuk , Maksim V. Andreev , Etienne Morelle , Pavol A. Dubovsky , Igor Kudzej , Arto Oksanen , Gianluca Masi , Thomas Krajci , Roger D. Pickard , Richard Sabo , Hiroshi Itoh , William Stein , Shawn Dvorak , Arne Henden , Shinichi Nakagawa , Ryo Noguchi , Eriko Iino , Katsura Matsumoto , Hiroki Nishitani , Tomoya Aoki , Hiroshi Kobayashi , Chihiro Akasaka , Greg Bolt , Jeremy Shears , Javier Ruiz , Sergey Yu. Shugarov , Drahomir Chochol , Nikolai A. Parakhin , Berto Monard , Kazuhiko Shiokawa , Kiyoshi Kasai , Bart Staels , Atsushi Miyashita , Donn R. Starkey , Yenal Ogmen , Colin Littlefield , Natalia Katysheva , Ivan M. Sergey , Denis Denisenko , Tamas Tordai , Robert Fidrich , Vitaly P. Goranskij , Jani Virtanen , Tim Crawford , Jochen Pietz , Robert A. Koff , David Boyd , Steve Brady , Nick James , William N. Goff , Koh-ichi Itagaki , Hideo Nishimura , Youichirou Nakashima , Seiichi Yoshida , Rod Stubbings , Gary Poyner , Yutaka Maeda , Stanislav A. Korotkiy , Kirill V. Sokolovsky , Seiji Ueda

Observation of ER UMa Stars

ER UMa stars are a recently recognized small subgroup of SU UMa-type dwarf novae, which are characterized by the extremely high outburst frequency and short (19--48 d) supercycles. From the current thermal-tidal disk instability scheme,…

Solar and Stellar Astrophysics · Physics 2013-01-16 Taichi Kato , Daisaku Nogami , Hajime Baba , Seiji Masuda , Katsura Matsumoto , Chatief Kunjaya

The Incidence of Dwarf Novae in Large Area Transient Searches

Understanding and quantifying the contribution of known classes of transient and variable sources is an important lesson to be learned from the manifold of pre-cursors programs of the near-future large synoptic sky survey programs like…

Astrophysics · Physics 2011-02-11 A. Rau , R. Schwarz , S. R. Kulkarni , E. O. Ofek , M. M. Kasliwal , C. Brinkworth , S. B. Cenko , Y. Lipkin , A. M. Soderberg

Photometric study of new southern SU UMa-type dwarf novae and candidates: V877 Ara, KK Tel and PU CMa

We photometrically observed three dwarf novae V877 Ara, KK Tel and PU CMa. We discovered undisputed presence of superhumps in V877 Ara and KK Tel, with mean periods of 0.08411(2) d and 0.08808(3) d, respectively. Both V877 Ara and KK Tel…

Astrophysics · Physics 2009-11-07 T. Kato , R. Santallo , G. Bolt , T. Richards , P. Nelson , B. Monard , M. Uemura , S. Kiyota , R. Stubbings , A. Pearce , T. Watanabe , P. Schmeer , H. Yamaoka

Transient behavior of three SU UMa-type dwarf novae; AR Pic, QW Ser and V521 Peg

Changes in the supercycle lengths of some SU UMa-type dwarf novae have been detected by other studies, and indicate that the mass transfer rates noticeably decrease over time. We investigated the supercycle lengths of three SU UMa-type…

Solar and Stellar Astrophysics · Physics 2022-05-04 Hélène Szegedi , Philip A. Charles , Pieter J. Meintjes , Alida Odendaal

Investigation of superhumps in SU UMa-type dwarf novae based on the observations of TESS

We report the superhumps analysis of seven SU UMa-type dwarf novae based on the observations of Transiting Exoplanet Survey Satellite (TESS). Superhumps are seen during superoutbursts of SU UMa-type dwarf novae. The month-long data sets of…

Solar and Stellar Astrophysics · Physics 2024-05-21 Wei Liu , Shengbang Qian

On supercycle lengths of active SU UMa stars

We performed a detailed analysis of extensive photometric observations of a sample of most active dwarf novae, that is SU UMa stars which are characterised by supercycle lengths shorter than 120 days. We found the observational evidence…

Solar and Stellar Astrophysics · Physics 2015-06-15 M. Otulakowska-Hypka , A. Olech