Survey of period variations of superhumps in SU UMa-type dwarf novae. V. The fifth year (2012–2013)
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- Taichi Kato
- 1Department of Astronomy, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto 606-8502
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- Franz-Josef Hambsch
- 2Groupe Européen d'Observations Stellaires (GEOS), 23 Parc de Levesville, 28300 Bailleau l'Evêque, France
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- Hiroyuki Maehara
- 5Kiso Observatory, Institute of Astronomy, School of Science, The University of Tokyo, 10762-30 Mitake, Kiso-machi, Kiso-gun, Nagano 397-0101
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- Gianluca Masi
- 7The Virtual Telescope Project, Via Madonna del Loco 47, 03023 Ceccano (FR), Italy
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- Francesca Nocentini
- 7The Virtual Telescope Project, Via Madonna del Loco 47, 03023 Ceccano (FR), Italy
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- Pavol A. Dubovsky
- 8Vihorlat Observatory, Mierova 4, Humenne, Slovakia
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- Igor Kudzej
- 8Vihorlat Observatory, Mierova 4, Humenne, Slovakia
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- Kazuyoshi Imamura
- 9Department of Biosphere-Geosphere System Science, Faculty of Informatics, Okayama University of Science, 1-1 Ridai-cho, Okayama, Okayama 700-0005
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- Minako Ogi
- 9Department of Biosphere-Geosphere System Science, Faculty of Informatics, Okayama University of Science, 1-1 Ridai-cho, Okayama, Okayama 700-0005
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- Kenji Tanabe
- 9Department of Biosphere-Geosphere System Science, Faculty of Informatics, Okayama University of Science, 1-1 Ridai-cho, Okayama, Okayama 700-0005
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- Hidehiko Akazawa
- 9Department of Biosphere-Geosphere System Science, Faculty of Informatics, Okayama University of Science, 1-1 Ridai-cho, Okayama, Okayama 700-0005
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- Thomas Krajci
- 10Astrokolkhoz Observatory, Center for Backyard Astrophysics New Mexico, PO Box 1351 Cloudcroft, NM 83117, USA
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- Ian Miller
- 11Furzehill House, Ilston, Swansea, SA2 7LE, UK
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- Enrique de Miguel
- 12Departamento de Física Aplicada, Facultad de Ciencias Experimentales, Universidad de Huelva, 21071 Huelva, Spain
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- Arne Henden
- 14American Association of Variable Star Observers (AAVSO), 49 Bay State Rd., Cambridge, MA 02138, USA
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- Ryo Noguchi
- 15Osaka Kyoiku University, 4-698-1 Asahigaoka, Kashiwara, Osaka 582-8582
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- Takehiro Ishibashi
- 15Osaka Kyoiku University, 4-698-1 Asahigaoka, Kashiwara, Osaka 582-8582
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- Rikako Ono
- 15Osaka Kyoiku University, 4-698-1 Asahigaoka, Kashiwara, Osaka 582-8582
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- Miho Kawabata
- 15Osaka Kyoiku University, 4-698-1 Asahigaoka, Kashiwara, Osaka 582-8582
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- Hiroshi Kobayashi
- 15Osaka Kyoiku University, 4-698-1 Asahigaoka, Kashiwara, Osaka 582-8582
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- Daisuke Sakai
- 15Osaka Kyoiku University, 4-698-1 Asahigaoka, Kashiwara, Osaka 582-8582
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- Hirochika Nishino
- 15Osaka Kyoiku University, 4-698-1 Asahigaoka, Kashiwara, Osaka 582-8582
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- Hisami Furukawa
- 15Osaka Kyoiku University, 4-698-1 Asahigaoka, Kashiwara, Osaka 582-8582
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- Kazunari Masumoto
- 15Osaka Kyoiku University, 4-698-1 Asahigaoka, Kashiwara, Osaka 582-8582
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- Katsura Matsumoto
- 15Osaka Kyoiku University, 4-698-1 Asahigaoka, Kashiwara, Osaka 582-8582
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- Colin Littlefield
- 16Department of Physics, University of Notre Dame, Notre Dame, IN 46556, USA
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- Tomohito Ohshima
- 1Department of Astronomy, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto 606-8502
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- Chikako Nakata
- 1Department of Astronomy, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto 606-8502
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- Satoshi Honda
- 17Gunma Astronomical Observatory, 6860-86 Nakayama, Takayama, Agatsuma, Gunma 377-0702
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- Kenzo Kinugasa
- 17Gunma Astronomical Observatory, 6860-86 Nakayama, Takayama, Agatsuma, Gunma 377-0702
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- Osamu Hashimoto
- 17Gunma Astronomical Observatory, 6860-86 Nakayama, Takayama, Agatsuma, Gunma 377-0702
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- William Stein
- 206025 Calle Paraiso, Las Cruces, NM 88012, USA
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- Roger D. Pickard
- 21The British Astronomical Association, Variable Star Section (BAA VSS), Burlington House, Piccadilly, London, W1J 0DU, UK
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- Seiichiro Kiyota
- 23Variable Star Observers League in Japan (VSOLJ), 7-1 Kitahatsutomi, Kamagaya, Chiba 273-0126
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- Elena P. Pavlenko
- 24Crimean Astrophysical Observatory, Kyiv Shevchenko National University, 98409, Nauchny, Crimea, Ukraine
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- Oksana I. Antonyuk
- 24Crimean Astrophysical Observatory, Kyiv Shevchenko National University, 98409, Nauchny, Crimea, Ukraine
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- Aleksei V. Baklanov
- 24Crimean Astrophysical Observatory, Kyiv Shevchenko National University, 98409, Nauchny, Crimea, Ukraine
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- Kirill Antonyuk
- 24Crimean Astrophysical Observatory, Kyiv Shevchenko National University, 98409, Nauchny, Crimea, Ukraine
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- Denis Samsonov
- 24Crimean Astrophysical Observatory, Kyiv Shevchenko National University, 98409, Nauchny, Crimea, Ukraine
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- Nikolaj Pit
- 24Crimean Astrophysical Observatory, Kyiv Shevchenko National University, 98409, Nauchny, Crimea, Ukraine
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- Aleksei Sosnovskij
- 24Crimean Astrophysical Observatory, Kyiv Shevchenko National University, 98409, Nauchny, Crimea, Ukraine
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- Arto Oksanen
- 25Hankasalmi Observatory, Jyvaskylan Sirius ry, Vertaalantie 419, FI-40270 Palokka, Finland
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- Caisey Harlingten
- 26Searchlight Observatory Network, The Grange, Erpingham, Norfolk, NR11 7QX, UK
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- Jenni Tyyskä
- 27Jyväskylän Lyseo Upper Secondary School, IB Section, Yliopistonkatu 13, FI-40101 Jyväskylä, Finland
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- Berto Monard
- 28Bronberg Observatory, Center for Backyard Astronomy Pretoria, PO Box 11426, Tiegerpoort 0056, South Africa
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- Sergey Yu. Shugarov
- 30Sternberg Astronomical Institute, Lomonosov Moscow University, Universitetsky Ave., 13, Moscow 119992, Russia
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- Drahomir Chochol
- 31Astronomical Institute of the Slovak Academy of Sciences, 05960, Tatranska Lomnica, The Slovak Republic
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- Kiyoshi Kasai
- 32Baselstrasse 133D, CH-4132 Muttenz, Switzerland
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- Yutaka Maeda
- 3312-14 Kaminishiyama-machi, Nagasaki, Nagasaki 850-0006
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- Kenji Hirosawa
- 34216-4 Maeda, Inazawa-cho, Inazawa, Aichi 492-8217
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- Hiroshi Itoh
- 35VSOLJ, 1001-105 Nishiterakata-machi, Hachioji, Tokyo 192-0153
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- Richard Sabo
- 362336 Trailcrest Dr., Bozeman, MT 59718, USA
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- Joseph Ulowetz
- 37Center for Backyard Astrophysics Illinois, Northbrook Meadow Observatory, 855 Fair Ln, Northbrook, IL 60062, USA
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- Etienne Morelle
- 389 rue Vasco de GAMA, 59553 Lauwin Planque, France
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- Raúl Michel
- 39Instituto de Astronomía UNAM, Apartado Postal 877, 22800 Ensenada B.C., México
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- Genaro Suárez
- 39Instituto de Astronomía UNAM, Apartado Postal 877, 22800 Ensenada B.C., México
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- Nick James
- 4011 Tavistock Road, Chelmsford, Essex, CM1 6JL, UK
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- Shawn Dvorak
- 41Rolling Hills Observatory, 1643 Nightfall Drive, Clermont, FL 34711, USA
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- Irina B. Voloshina
- 30Sternberg Astronomical Institute, Lomonosov Moscow University, Universitetsky Ave., 13, Moscow 119992, Russia
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- Michael Richmond
- 42Physics Department, Rochester Institute of Technology, Rochester, NY 14623, USA
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- Bart Staels
- 14American Association of Variable Star Observers (AAVSO), 49 Bay State Rd., Cambridge, MA 02138, USA
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- David Boyd
- 44Silver Lane, West Challow, Wantage, OX12 9TX, UK
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- Maksim V. Andreev
- 45Institute of Astronomy, Russian Academy of Sciences, 361605 Peak Terskol, Kabardino-Balkaria, Russia
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- Nikolai Parakhin
- 45Institute of Astronomy, Russian Academy of Sciences, 361605 Peak Terskol, Kabardino-Balkaria, Russia
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- Natalia Katysheva
- 30Sternberg Astronomical Institute, Lomonosov Moscow University, Universitetsky Ave., 13, Moscow 119992, Russia
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- Atsushi Miyashita
- 47Seikei Meteorological Observatory, Seikei High School, 3-3-1 Kichijoji-Kita-machi, Musashino, Tokyo 180-8633
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- Kazuhiro Nakajima
- 48Variable Star Observers League in Japan (VSOLJ), 124 Teradani, Isato-cho, Kumano, Mie 519-4673
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- Greg Bolt
- 49Camberwarra Drive, Craigie, Western Australia 6025, Australia
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- Stefano Padovan
- 14American Association of Variable Star Observers (AAVSO), 49 Bay State Rd., Cambridge, MA 02138, USA
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- Peter Nelson
- 501105 Hazeldean Rd, Ellinbank 3820, Australia
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- Donn R. Starkey
- 51DeKalb Observatory, H63, 2507 County Road 60, Auburn, IN 46706, USA
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- Denis Buczynski
- 52Conder Brow Observatory, Fell Acre, Conder Brow, Little Fell Lane, Scotforth, Lancashire, LA2 0RQ, UK
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- Peter Starr
- 53Warrumbungle Observatory, Tenby, 841 Timor Rd, Coonabarabran NSW 2357, Australia
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- William N. Goff
- 5413508 Monitor Ln., Sutter Creek, CA 95685, USA
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- Denis Denisenko
- 55Space Research Institute (IKI), Russian Academy of Sciences, Moscow, Russia
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- Christopher S. Kochanek
- 56Department of Astronomy, The Ohio State University, Columbia, OH 43210, USA
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- Benjamin Shappee
- 56Department of Astronomy, The Ohio State University, Columbia, OH 43210, USA
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- Krzysztof Z. Stanek
- 56Department of Astronomy, The Ohio State University, Columbia, OH 43210, USA
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- José L. Prieto
- 57Department of Astrophysical Sciences, Princeton University, NJ 08544, USA
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- Koh-ichi Itagaki
- 58Itagaki Astronomical Observatory, Teppo-cho, Yamagata, Yamagata 990-2492
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- Shizuo Kaneko
- 5914-7 Kami-Yashiki, Kakegawa, Shizuoka 436-0049
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- Rod Stubbings
- 60Tetoora Observatory, Tetoora Road, Victoria, Australia
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- Eddy Muyllaert
- 61Vereniging Voor Sterrenkunde (VVS), Moffelstraat 13, 3370 Boutersem, Belgium
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- Jeremy Shears
- 62“Pemberton”, School Lane, Bunbury, Tarporley, Cheshire, CW6 9NR, UK
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- Patrick Schmeer
- 63Bischmisheim, Am Probstbaum 10, 66132 Saarbrücken, Germany
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- Gary Poyner
- 64BAA Variable Star Section, 67 Ellerton Road, Kingstanding, Birmingham, B44 0QE, UK
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- Miguel Rodríguez-Marco
- 65Alberdi, 42, 2F 28029 Madrid, Spain
Description
<jats:title>Abstract</jats:title><jats:p>Continuing the project described in Kato et al. (2009, PASJ, 61, S395), 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 MASTER J212624) having strongly positive period derivatives despite the long orbital period (Porb). By using the period of growing stage (stage A) superhumps, we obtained mass ratios for six objects. We characterized nine new WZ Sge-type dwarf novae. We made a pilot survey of the decline rate in the slowly fading parts of SU UMa-type and WZ Sge-type outbursts. The decline time scale was found to generally follow an expected $P_{\rm orb}^{1/4}$ dependence, and WZ Sge-type outbursts also generally follow this trend. There are some objects which show slower decline rates, and we consider these objects good candidates for period bouncers. We also studied unusual behavior in some objects, including BK Lyn which made a transition from an ER UMa-type state to a novalike (standstill) state in 2013, and unusually frequent occurrences of superoutbursts in NY Ser and CR Boo. We applied the least absolute shrinkage and selection operator (Lasso) power spectral analysis, which has been proven to be very effective in analyzing the Kepler data, to the ground-based photometry of BK Lyn, and detected a dramatic disappearance of the signal of negative superhumps in 2013. We suggested that the mass-transfer rates did not strongly vary between the ER UMa-type state and novalike state in BK Lyn, and this transition was less likely caused by a systematic variation of the mass-transfer rate.</jats:p>
Journal
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- Publications of the Astronomical Society of Japan
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Publications of the Astronomical Society of Japan 66 (2), 30-, 2014-04-01
Oxford University Press (OUP)
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Details 詳細情報について
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- CRID
- 1360283692627437440
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- ISSN
- 2053051X
- 00046264
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- Data Source
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- Crossref
- KAKEN