Related papers: New Method to Estimate Binary Mass Ratios by Using…

Evolution of short-period cataclysmic variables: implications from eclipse modeling and stage A superhump method (with New Year's gift)

In 2013, the method of determining mass ratios of dwarf novae using stage A superhumps (growing superhumps) was established. This method is a dynamical one in that it relies only on celestial mechanics. It is not dependent on an…

Solar and Stellar Astrophysics · Physics 2022-01-11 Taichi Kato

WZ Sge-Type Dwarf Novae

We have summarized the current understanding and recently obtained findings about WZ Sge-type dwarf novae. We also reviewed the historical development of the understanding of these objects, provided the modern criteria, and reviewed the…

Solar and Stellar Astrophysics · Physics 2015-09-30 Taichi Kato

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

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. 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. 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

Photometric Observation and Numerical Simulation of Early Superhumps in BC UMa during the 2003 Superoutburst

We carried out time-resolved photometric observations of an SU UMa type dwarf nova, BC UMa, during its superoutburst in February 2003. We detect early superhumps (or outburst orbital humps) during the first two days of the outburst. The…

Astrophysics · Physics 2015-06-24 Hiroyuki Maehara , Izumi Hachisu , Kazuhiro Nakajima

Study of Negative and Positive Superhumps in ER Ursae Majoris

We carried out the photometric observations of the SU UMa-type dwarf nova ER UMa during 2011 and 2012, which showed the existence of persistent negative superhumps even during the superoutburst. We performed two-dimensional period analysis…

Solar and Stellar Astrophysics · Physics 2015-06-18 Tomohito Ohshima , Taichi Kato , Elena Pavlenko , Hidehiko Akazawa , Kazuyoshi Imamura , Kenji Tanabe , Enrique de Miguel , William Stein , Hiroshi Itoh , Franz-Josef Hambsch , Pavol A. Dubovsky , Igor Kudzej , Thomas Krajci , Alex Baklanov , Denis Samsonov , Oksana Antonyuk , Viktor Malanushenko , Maksim Andreev , Ryo Noguchi , Kazuyuki Ogura , Takashi Nomoto , Rikako Ono , Shin'ichi Nakagawa , Keisuke Taniuchi , Tomoya Aoki , Miho Kawabata , Hitoshi Kimura , Kazunari Masumoto , Hiroshi Kobayashi , Katsura Matsumoto , Kazuhiko Shiokawa , Sergey Yu. Shugarov , Natalia Katysheva , Irina Voloshina , Polina Zemko , Kiyoshi Kasai , Javier Ruiz , Hiroyuki Maehara , Natalia Virnina , Jani Virtanen , Ian Miller , Boyd Boitnott , Colin Littlefield , Nick James , Tamas Tordai , Fidrich Robaert , Stefono Padovan , Atsushi Miyashita

Nova V5116 Sgr and searching for superhumps in nova remnants

We present the period analysis of unfiltered photometric observations of V5116 Sgr (Nova Sgr 2005 #2) and we search for superhump candidates in novae remnants. The PDM method for period analysis is used. The masses of the novae componets…

Astrophysics · Physics 2009-11-13 A. Dobrotka , A. Retter , A. Liu

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

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

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

Superhumps in Cataclysmic Binaries. XXV. q_crit, epsilon(q), and Mass-Radius

We report on successes and failures in searching for positive superhumps in cataclysmic variables, and show the superhumping fraction as a function of orbital period. Basically, all short-period systems do, all long-period systems don't,…

Astrophysics · Physics 2009-11-11 Joseph Patterson , Jonathan Kemp , David Harvey , Robert Fried , Robert Rea , Berto Monard , Lewis Cook , David Skillman , Tonny Vanmunster , Greg Bolt , Eve Armstrong , Jennie McCormick , Thomas Krajci , Lasse Jensen , Jerry Gunn , Neil Butterworth , Jerry Foote , Marc Bos , Gianluca Masi , Paul Warhurst

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

Late Superhumps in WZ Sge-Type Dwarf Novae

We report on the detection of very stable modulations with periods unexpectedly (~0.5%) longer than superhump periods during the slowly fading stage of WZ Sge-type superoutbursts in three systems, GW Lib, V455 And and WZ Sge. These periods…

Astrophysics · Physics 2015-05-13 Taichi Kato , Hiroyuki Maehara , Berto Monard

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

Superoutburst of CR Bootis: Estimation of Mass Ratio of a typical AM CVn star by Stage A Superhumps

We report on two superoutbursts of the AM CVn-type object CR Boo in 2014 April--March and 2015 May--June. A precursor outburst acompanied both of these superoutbursts. During the rising branch of the main superoutburst in 2014, we detected…

Solar and Stellar Astrophysics · Physics 2016-08-17 Keisuke Isogai , Taichi Kato , Tomohito Ohshima , Kiyoshi Kasai , Arto Oksanen , Kazunari Masumoto , Daiki Fukushima , Kazuki Maeda , Miho Kawabata , Risa Matsuda , Naoto Kojiguchi , Yuki Sugiura , Nao Takeda , Katsura Matsumoto , Hiroshi Itoh , Elena P. Pavlenko , Kirill Antonyuk , Oksana Antonyuk , Nikolai Pit , Aleksei Sosnovskij , Alex Baklanov , Julia Babina , Aleksandr Sklyanov , Seiichiro Kiyota , Franz-josef Hambsch , Colin Littlefield , Yutaka Maeda , Lewis M. Cook , Gianluca Masi , Pavol A. Dubovsky , Rudolf Novak , Shawn Dvorak , Akira Imada , Daisaku Nogami

Photometric analysis of the dwarf nova SU UMa based on TESS

We report the photometric analysis of SU UMa based on the observations of the Transiting Exoplanet Survey Satellite (TESS). TESS has released a large amount of data, which contains the light curves of a complete superoutburst and three…

Solar and Stellar Astrophysics · Physics 2024-05-21 Wei Liu , Xiang-Dong Shi , Xiao-Hui Fang , Qi-Shan Wang

The 2015 superoutburst of QZ Virginis: Detection of growing superhumps between the precursor and main superoutburst

We report on time-resolved photometry of the 2015 February-March superoutburst of QZ Virginis. The superoutburst consisted of a separated precursor, main superoutburst, and rebrightening. We detected superhumps with a period of 0.061181(42)…

Solar and Stellar Astrophysics · Physics 2017-11-17 Akira Imada , Taichi Kato , Keisuke Isogai , Franz-Josef Hambsch , Pavol A. Dubovsky , Igor Kudzej , Roger D. Pickard , Hidehiko Akazawa , Kiyoshi Kasai , Hiroshi Itoh , Lewis M. Cook , Seiichiro Kiyota

OAO/MITSuME Photometry of Dwarf Novae. III. CSS130418:174033+414756

We report on multicolour photometry of the short period dwarf nova CSS130418:174033+414756 during the 2013 superoutburst. The system showed an unusually short superhump period with 0.046346(67) d during stage A, which is one of the shortest…

Solar and Stellar Astrophysics · Physics 2018-07-18 Akira Imada , Keisuke Isogai , Kenshi Yanagisawa , Nobuyuki Kawai