Survey of period variations of superhumps in SU UMa-type dwarf
novae. VII. The seventh year (2014-2015)

J 2015

Survey of period variations of superhumps in SU UMa-type dwarf novae. VII. The seventh year (2014-2015)

KATO, Taichi, Franz-Josef HAMBSCH, Pavol A. DUBOVSKY, Igor KUDZEJ, Berto MONARD et. al.

Základní údaje

Originální název

Survey of period variations of superhumps in SU UMa-type dwarf novae. VII. The seventh year (2014-2015)

Autoři

KATO, Taichi (392 Japonsko, garant), Franz-Josef HAMBSCH (276 Německo), Pavol A. DUBOVSKY (703 Slovensko), Igor KUDZEJ (703 Slovensko), Berto MONARD (710 Jižní Afrika), Ian MILLER (840 Spojené státy), Hiroshi ITOH (392 Japonsko), Seiichiro KIYOTA (392 Japonsko), Kazunari MASUMOTO (392 Japonsko), Daiki FUKUSHIMA (392 Japonsko), Hiroki KINOSHITA (392 Japonsko), Kazuki MAEDA (392 Japonsko), Jyunya MIKAMI (392 Japonsko), Risa MATSUDA (392 Japonsko), Naoto KOJIGUCHI (392 Japonsko), Miho KAWABATA (392 Japonsko), Megumi TAKENAKA (392 Japonsko), Katsura MATSUMOTO (392 Japonsko), Enrique DE MIGUEL (724 Španělsko), Yutaka MAEDA (392 Japonsko), Tomohito OHSHIMA (392 Japonsko), Keisuke ISOGAI (392 Japonsko), Roger D. PICKARD (826 Velká Británie a Severní Irsko), Arne HENDEN (840 Spojené státy), Stella KAFKA (840 Spojené státy), Hidehiko AKAZAWA (392 Japonsko), Noritoshi OTANI (392 Japonsko), Sakiko ISHIBASHI (392 Japonsko), Minako OGI (392 Japonsko), Kenji TANABE (392 Japonsko), Kazuyoshi IMAMURA (392 Japonsko), William STEIN (840 Spojené státy), Kiyoshi KASAI (392 Japonsko), Tonny VANMUNSTER (56 Belgie), Peter STARR (36 Austrálie), Arto OKSANEN (246 Finsko), Elena P. PAVLENKO (643 Rusko), Oksana I. ANTONYUK (643 Rusko), Kirill A. ANTONYUK (643 Rusko), Aleksei A. SOSNOVSKIJ (643 Rusko), Nikolaj V. PIT (643 Rusko), Julia V. BABINA (643 Rusko), Aleksandr SKLYANOV (643 Rusko), Rudolf NOVÁK (203 Česká republika, domácí), Shawn DVORAK (840 Spojené státy), Raul MICHEL (840 Spojené státy), Gábor ALMÁSI (380 Itálie), Colin LITTLEFIELD (840 Spojené státy), Joseph ULOWETZ (840 Spojené státy), Sergey Yu. SHUGAROV (643 Rusko), Polina Yu. GOLYSHEVA (643 Rusko), Drahomir CHOCHOL (703 Slovensko), Viktoriia KRUSHEVSKA (804 Ukrajina), Javier RUIZ (724 Španělsko), Tamas TORDAI (724 Španělsko), Etienne MORELLE (724 Španělsko), Richard SABO (724 Španělsko), Hiroyuki MAEHARA (392 Japonsko), Michael RICHMOND (840 Spojené státy), Natalia KATYSHEVA (643 Rusko), Kenji HIROSAWA (56 Belgie), William N. GOFF (56 Belgie), Franky DUBOIS (56 Belgie), Ludwig LOGIE (56 Belgie), Steve RAU (56 Belgie), Irina B. VOLOSHINA (643 Rusko), Maksim V. ANDREEV (804 Ukrajina), Kazuhiko SHIOKAWA (392 Japonsko), Vitaly V. NEUSTROEV (246 Finsko), George SJOBERG (840 Spojené státy), Sergey ZHARIKOV (484 Mexiko), Nick JAMES (840 Spojené státy), Greg BOLT (840 Spojené státy), Tim CRAWFORD (840 Spojené státy), Denis BUCZYNSKI (826 Velká Británie a Severní Irsko), Lewis M. COOK (840 Spojené státy), Christopher S. KOCHANEK (840 Spojené státy), Benjamin SHAPPEE (840 Spojené státy), Krzysztof Z. STANEK (840 Spojené státy), Jose L. PRIETO (840 Spojené státy), Denis DENISENKO (643 Rusko), Hideo NISHIMURA (392 Japonsko), Masaru MUKAI (392 Japonsko), Shizuo KANEKO (392 Japonsko), Seiji UEDA (392 Japonsko), Rod STUBBINGS (36 Austrálie), Masayuki MORIYAMA (392 Japonsko), Patrick SCHMEER (276 Německo), Eddy MUYLLAERT (56 Belgie), Jeremy SHEARS (826 Velká Británie a Severní Irsko), Robert J. MODIC (826 Velká Británie a Severní Irsko) a Kevin B. PAXSON (826 Velká Británie a Severní Irsko)

Vydání

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, OXFORD (ENGLAND), OXFORD UNIV PRESS, 2015, 0004-6264

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.961

Kód RIV

RIV/00216224:14310/15:00086725

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1093/pasj/psv072

UT WoS

000366859800005

Klíčová slova anglicky

accretion; accretion disks; novae; cataclysmic variables; stars; dwarf novae

Štítky

AKR, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 12. 4. 2016 13:51, Ing. Andrea Mikešková

Anotace

V originále

Continuing the project described by Kato et al. (2009, PASJ, 61, S395), 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 greatly improved the statistics of the distribution of orbital periods, which is a good approximation of the distribution of cataclysmic variables at the terminal evolutionary stage, and has confirmed the presence of a periodminimum at a period of 0.053 d and a period spike just above this period. The number density monotonically decreased toward the longer period and there was no strong indication of a period gap. We detected possible negative superhumps in Z Cha. It is possible that normal outbursts are also suppressed by the presence of a disk tilt in this system. There was no indication of enhanced orbital humps just preceding the superoutburst, and this result favors the thermal-tidal disk instability as the origin of superoutbursts. We detected superhumps in three AM CVn-type dwarf novae. Our observations and recent other detections suggest that 8% of objects showing dwarf nova-type outbursts are AM CVn-type objects. AM CVn-type objects and EI Psc-type objects may be more abundant than previously recognized. OT J213806, a WZ Sge-type object, exhibited remarkably different features between the 2010 and 2014 superoutbursts. Although the 2014 superoutburst was much fainter, the plateau phase was shorter than the 2010 one, and the course of the rebrightening phase was similar. This object indicates that the O-C diagrams of superhumps can indeed be variable, at least in WZ Sge-type objects. Four deeply eclipsing SU UMa-type dwarf novae (ASASSN-13cx, ASASSN-14ag, ASASSN-15bu, and NSV 4618) were identified. We studied long-term trends in supercycles in MM Hya and CY UMa and found systematic variations of supercycles of similar to 20%.

Citovat

KATO, Taichi, 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, Arto OKSANEN, Elena P. PAVLENKO, Oksana I. ANTONYUK, Kirill A. ANTONYUK, Aleksei A. SOSNOVSKIJ, Nikolaj V. PIT, Julia V. BABINA, Aleksandr SKLYANOV, Rudolf NOVÁK, Shawn DVORAK, Raul MICHEL, Gábor ALMÁSI, 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 a Kevin B. PAXSON. Survey of period variations of superhumps in SU UMa-type dwarf novae. VII. The seventh year (2014-2015). PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN. OXFORD (ENGLAND): OXFORD UNIV PRESS, 2015, roč. 67, č. 6, s. "nestránkováno", 110 s. ISSN 0004-6264. Dostupné z: https://dx.doi.org/10.1093/pasj/psv072.

@article{1336412,
   author = {Kato, Taichi and Hambsch, FranzandJosef and Dubovsky, Pavol A. and Kudzej, Igor and Monard, Berto and Miller, Ian and Itoh, Hiroshi and Kiyota, Seiichiro and Masumoto, Kazunari and Fukushima, Daiki and Kinoshita, Hiroki and Maeda, Kazuki and Mikami, Jyunya and Matsuda, Risa and Kojiguchi, Naoto and Kawabata, Miho and Takenaka, Megumi and Matsumoto, Katsura and de Miguel, Enrique and Maeda, Yutaka and Ohshima, Tomohito and Isogai, Keisuke and Pickard, Roger D. and Henden, Arne and Kafka, Stella and Akazawa, Hidehiko and Otani, Noritoshi and Ishibashi, Sakiko and Ogi, Minako and Tanabe, Kenji and Imamura, Kazuyoshi and Stein, William and Kasai, Kiyoshi and Vanmunster, Tonny and Starr, Peter and Oksanen, Arto and Pavlenko, Elena P. and Antonyuk, Oksana I. and Antonyuk, Kirill A. and Sosnovskij, Aleksei A. and Pit, Nikolaj V. and Babina, Julia V. and Sklyanov, Aleksandr and Novák, Rudolf and Dvorak, Shawn and Michel, Raul and Almási, Gábor and Littlefield, Colin and Ulowetz, Joseph and Shugarov, Sergey Yu. and Golysheva, Polina Yu. and Chochol, Drahomir and Krushevska, Viktoriia and Ruiz, Javier and Tordai, Tamas and Morelle, Etienne and Sabo, Richard and Maehara, Hiroyuki and Richmond, Michael and Katysheva, Natalia and Hirosawa, Kenji and Goff, William N. and Dubois, Franky and Logie, Ludwig and Rau, Steve and Voloshina, Irina B. and Andreev, Maksim V. and Shiokawa, Kazuhiko and Neustroev, Vitaly V. and Sjoberg, George and Zharikov, Sergey and James, Nick and Bolt, Greg and Crawford, Tim and Buczynski, Denis and Cook, Lewis M. and Kochanek, Christopher S. and Shappee, Benjamin and Stanek, Krzysztof Z. and Prieto, Jose L. and Denisenko, Denis and Nishimura, Hideo and Mukai, Masaru and Kaneko, Shizuo and Ueda, Seiji and Stubbings, Rod and Moriyama, Masayuki and Schmeer, Patrick and Muyllaert, Eddy and Shears, Jeremy and Modic, Robert J. and Paxson, Kevin B.},
   article_location = {OXFORD (ENGLAND)},
   article_number = {6},
   doi = {http://dx.doi.org/10.1093/pasj/psv072},
   keywords = {accretion; accretion disks; novae; cataclysmic variables; stars; dwarf novae},
   language = {eng},
   issn = {0004-6264},
   journal = {PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN},
   title = {Survey of period variations of superhumps in SU UMa-type dwarf novae. VII. The seventh year (2014-2015)},
   url = {http://arxiv.org/abs/1507.05610},
   volume = {67},
   year = {2015}
}

TY  - JOUR
ID  - 1336412
AU  - Kato, Taichi - Hambsch, Franz-Josef - Dubovsky, Pavol A. - Kudzej, Igor - Monard, Berto - Miller, Ian - Itoh, Hiroshi - Kiyota, Seiichiro - Masumoto, Kazunari - Fukushima, Daiki - Kinoshita, Hiroki - Maeda, Kazuki - Mikami, Jyunya - Matsuda, Risa - Kojiguchi, Naoto - Kawabata, Miho - Takenaka, Megumi - Matsumoto, Katsura - de Miguel, Enrique - Maeda, Yutaka - Ohshima, Tomohito - Isogai, Keisuke - Pickard, Roger D. - Henden, Arne - Kafka, Stella - Akazawa, Hidehiko - Otani, Noritoshi - Ishibashi, Sakiko - Ogi, Minako - Tanabe, Kenji - Imamura, Kazuyoshi - Stein, William - Kasai, Kiyoshi - Vanmunster, Tonny - Starr, Peter - Oksanen, Arto - Pavlenko, Elena P. - Antonyuk, Oksana I. - Antonyuk, Kirill A. - Sosnovskij, Aleksei A. - Pit, Nikolaj V. - Babina, Julia V. - Sklyanov, Aleksandr - Novák, Rudolf - Dvorak, Shawn - Michel, Raul - Almási, Gábor - Littlefield, Colin - Ulowetz, Joseph - Shugarov, Sergey Yu. - Golysheva, Polina Yu. - Chochol, Drahomir - Krushevska, Viktoriia - Ruiz, Javier - Tordai, Tamas - Morelle, Etienne - Sabo, Richard - Maehara, Hiroyuki - Richmond, Michael - Katysheva, Natalia - Hirosawa, Kenji - Goff, William N. - Dubois, Franky - Logie, Ludwig - Rau, Steve - Voloshina, Irina B. - Andreev, Maksim V. - Shiokawa, Kazuhiko - Neustroev, Vitaly V. - Sjoberg, George - Zharikov, Sergey - James, Nick - Bolt, Greg - Crawford, Tim - Buczynski, Denis - Cook, Lewis M. - Kochanek, Christopher S. - Shappee, Benjamin - Stanek, Krzysztof Z. - Prieto, Jose L. - Denisenko, Denis - Nishimura, Hideo - Mukai, Masaru - Kaneko, Shizuo - Ueda, Seiji - Stubbings, Rod - Moriyama, Masayuki - Schmeer, Patrick - Muyllaert, Eddy - Shears, Jeremy - Modic, Robert J. - Paxson, Kevin B.
PY  - 2015
TI  - Survey of period variations of superhumps in SU UMa-type dwarf novae. VII. The seventh year (2014-2015)
JF  - PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
VL  - 67
IS  - 6
SP  - "nestránkováno"
EP  - "nestránkováno"
PB  - OXFORD UNIV PRESS
SN  - 00046264
KW  - accretion
KW  - accretion disks
KW  - novae
KW  - cataclysmic variables
KW  - stars
KW  - dwarf novae
UR  - http://arxiv.org/abs/1507.05610
L2  - http://arxiv.org/abs/1507.05610
N2  - Continuing the project described by Kato et al. (2009, PASJ, 61, S395), 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 greatly improved the statistics of the distribution of orbital periods, which is a good approximation of the distribution of cataclysmic variables at the terminal evolutionary stage, and has confirmed the presence of a periodminimum at a period of 0.053 d and a period spike just above this period. The number density monotonically decreased toward the longer period and there was no strong indication of a period gap. We detected possible negative superhumps in Z Cha. It is possible that normal outbursts are also suppressed by the presence of a disk tilt in this system. There was no indication of enhanced orbital humps just preceding the superoutburst, and this result favors the thermal-tidal disk instability as the origin of superoutbursts. We detected superhumps in three AM CVn-type dwarf novae. Our observations and recent other detections suggest that 8% of objects showing dwarf nova-type outbursts are AM CVn-type objects. AM CVn-type objects and EI Psc-type objects may be more abundant than previously recognized. OT J213806, a WZ Sge-type object, exhibited remarkably different features between the 2010 and 2014 superoutbursts. Although the 2014 superoutburst was much fainter, the plateau phase was shorter than the 2010 one, and the course of the rebrightening phase was similar. This object indicates that the O-C diagrams of superhumps can indeed be variable, at least in WZ Sge-type objects. Four deeply eclipsing SU UMa-type dwarf novae (ASASSN-13cx, ASASSN-14ag, ASASSN-15bu, and NSV 4618) were identified. We studied long-term trends in supercycles in MM Hya and CY UMa and found systematic variations of supercycles of similar to 20%.
ER  -

KATO, Taichi, 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, Arto OKSANEN, Elena P. PAVLENKO, Oksana I. ANTONYUK, Kirill A. ANTONYUK, Aleksei A. SOSNOVSKIJ, Nikolaj V. PIT, Julia V. BABINA, Aleksandr SKLYANOV, Rudolf NOVÁK, Shawn DVORAK, Raul MICHEL, Gábor ALMÁSI, 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 a Kevin B. PAXSON. Survey of period variations of superhumps in SU UMa-type dwarf novae. VII. The seventh year (2014-2015). \textit{PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN}. OXFORD (ENGLAND): OXFORD UNIV PRESS, 2015, roč.~67, č.~6, s.~''nestránkováno'', 110 s. ISSN~0004-6264. Dostupné z: https://dx.doi.org/10.1093/pasj/psv072.

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