Survey of period variations of superhumps in SU UMa-type dwarf novae. X. The tenth year (2017)

Author:

Kato Taichi1,Isogai Keisuke12,Wakamatsu Yasuyuki1,Hambsch Franz-Josef345,Itoh Hiroshi6,Tordai Tamás7,Vanmunster Tonny8,Dubovsky Pavol A9,Kudzej Igor9,Medulka Tomáš9,Kimura Mariko1,Ohnishi Ryuhei1,Monard Berto1011,Pavlenko Elena P12,Antonyuk Kirill A12,Pit Nikolaj V12,Antonyuk Oksana I12,Babina Julia V12,Baklanov Aleksei V12,Sosnovskij Aleksei A12,Pickard Roger D1314,Miller Ian15,Maeda Yutaka16,de Miguel Enrique1718,Brincat Stephen M19,Licchelli Domenico2021,Cook Lewis M22,Shugarov Sergey Yu2323,Zaostrojnykh Anna M24,Chochol Drahomir23,Golysheva Polina25,Katysheva Natalia25,Zubareva Alexandra M2526,Stone Geoff27,Kasai Kiyoshi28,Starr Peter29,Littlefield Colin30,Kiyota Seiichiro31,Andreev Maksim V3233,Sergeev Alexandr V3233,Ruiz Javier343536,Myers Gordon37,Simon Andrii O38,Vasylenko Volodymyr V38,Soldán Francisco39,Ögmen Yenal40,Nakajima Kazuhiro41,Nelson Peter42,Masi Gianluca43,Menzies Kenneth44,Sabo Richard45,Bolt Greg46,Dvorak Shawn47,Stanek Krzysztof Z48,Shields Joseph V48,Kochanek Christopher S48,Holoien Thomas W-S48,Shappee Benjamin49,Prieto José L5051,Kojima Tadashi52,Nishimura Hideo53,Kaneko Shizuo54,Fujikawa Shigehisa55,Stubbings Rod56,Muyllaert Eddy57,Poyner Gary58,Moriyama Masayuki59,Maehara Hiroyuki60,Schmeer Patrick61,Denisenko Denis25

Affiliation:

1. Department of Astronomy, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto, Kyoto 606-8502, Japan

2. Okayama Observatory, Kyoto University, 3037-5 Honjo, Kamogata-cho, Asakuchi, Okayama 719-0232, Japan

3. Groupe Européen d’Observations Stellaires (GEOS), 23 Parc de Levesville, 28300 Bailleau l’Evêque, France

4. Bundesdeutsche Arbeitsgemeinschaft für Veränderliche Sterne (BAV), Munsterdamm 90, 12169 Berlin, Germany

5. Vereniging Voor Sterrenkunde (VVS), Oude Bleken 12, 2400 Mol, Belgium

6. Variable Star Observers League in Japan (VSOLJ), 1001-105 Nishiterakata, Hachioji, Tokyo 192-0153, Japan

7. Polaris Observatory, Hungarian Astronomical Association, Laborc utca 2/c, 1037 Budapest, Hungary

8. Center for Backyard Astrophysics Belgium, Walhostraat 1A, B-3401 Landen, Belgium

9. Vihorlat Observatory, Mierova 4, 06601 Humenne, Slovakia

10. Bronberg Observatory, Center for Backyard Astrophysics Pretoria, PO Box 11426, Tiegerpoort 0056, South Africa

11. Kleinkaroo Observatory, Center for Backyard Astrophysics Kleinkaroo, Sint Helena 1B, PO Box 281, Calitzdorp 6660, South Africa

12. Federal State Budget Scientific Institution “Crimean Astrophysical Observatory of RAS”, Nauchny, 298409, Republic of Crimea

13. The British Astronomical Association, Variable Star Section (BAA VSS), Burlington House, Piccadilly, London W1J 0DU, UK

14. 3 The Birches, Shobdon, Leominster, Herefordshire, HR6 9NG, UK

15. Furzehill House, Ilston, Swansea, SA2 7LE, UK

16. 12-14 Kaminishiyama-machi, Nagasaki, Nagasaki 850-0006, Japan

17. Departamento de Ciencias Integradas, Facultad de Ciencias Experimentales, Universidad de Huelva, 21071 Huelva, Spain

18. Center for Backyard Astrophysics, Observatorio del CIECEM, Parque Dunar, Matalascañas, 21760 Almonte, Huelva, Spain

19. Flarestar Observatory, San Gwann SGN 3160, Malta

20. R. P. Feynman Observatory, Gagliano del Capo, 73034, Italy

21. Center for Backyard Astrophysics – Gagliano del Capo, 73034, Italy

22. Center for Backyard Astrophysics Concord, 1730 Helix Ct. Concord, CA 94518, USA

23. Astronomical Institute of the Slovak Academy of Sciences, 05960 Tatranska Lomnica, Slovakia

24. Institute of Physics, Kazan Federal University, Ulitsa Kremlevskaya 16a, Kazan 420008, Russia

25. Sternberg Astronomical Institute, Lomonosov Moscow State University, Universitetsky Ave., 13, Moscow 119992, Russia

26. Institute of Astronomy, Russian Academy of Sciences, Moscow 119017, Russia

27. American Association of Variable Star Observers, 49 Bay State Rd., Cambridge, MA 02138, USA

28. Baselstrasse 133D, CH-4132 Muttenz, Switzerland

29. Warrumbungle Observatory, Tenby, 841 Timor Rd., Coonabarabran, NSW 2357, Australia

30. Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN 46556, USA

31. Variable Star Observers League in Japan, 7-1 Kitahatsutomi, Kamagaya, Chiba 273-0126, Japan

32. Terskol Branch of Institute of Astronomy, Russian Academy of Sciences, 361605, Peak Terskol, Kabardino-Balkaria Republic, Russia

33. International Center for Astronomical, Medical and Ecological Research of NASU, Ukraine 27 Akademika Zabolotnoho Str. 03680 Kyiv, Ukraine

34. Observatorio de Cántabria, Ctra. de Rocamundo s/n, Valderredible, 39220 Cantabria, Spain

35. Instituto de Física de Cantabria (CSIC-UC), Avenida Los Castros s/n, E-39005 Santander, Cantabria, Spain

36. Agrupación Astronómica Cántabria, Apartado 573, 39080, Santander, Spain

37. Center for Backyard Astrophysics San Mateo, 5 Inverness Way, Hillsborough, CA 94010, USA

38. Astronomy and Space Physics Department, Taras Shevshenko National University of Kyiv, Volodymyrska str. 60, Kyiv, 01601, Ukraine

39. Observatorio Amanecer de Arrakis, Alcalá de Guadaíra, Petrarca 6, 1A 41006 Seville, Spain

40. Green Island Observatory, Geçitkale, Magosa, via Mersin, North Cyprus

41. Variable Star Observers League in Japan, 124 Teradani, Isato-cho, Kumano, Mie 519-4673, Japan

42. 1105 Hazeldean Rd., Ellinbank, VIC 3820, Australia

43. The Virtual Telescope Project, Via Madonna del Loco 47, 03023 Ceccano (FR), Italy

44. Center for Backyard Astrophysics (Framingham), 318A Potter Road, Framingham, MA 01701, USA

45. 2336 Trailcrest Dr., Bozeman, MT 59718, USA

46. Camberwarra Drive, Craigie, Western Australia 6025, Australia

47. Rolling Hills Observatory, 1643 Nightfall Drive, Clermont, FL 34711, USA

48. Department of Astronomy, The Ohio State University, Columbia, OH 43210, USA

49. Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101, USA

50. Núcleo de Astronomía de la Facultad de Ingeniería, Universidad Diego Portales, Av. Ejército 441, Santiago, Chile

51. Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA

52. Kanbara, Tsumagoi-mura, Agatsuma-gun, Gunma 377-1524, Japan

53. 302-6 Miyawaki, Kakegawa, Shizuoka 436-0086, Japan

54. 14-7 Kami-Yashiki, Kakegawa, Shizuoka 436-0049, Japan

55. 107 Iseki, Oonohara-cho, Kannonji, Kagawa 769-1621, Japan

56. Tetoora Observatory, 2643 Warragul-Korumburra Road, Tetoora Road, Victoria 3821, Australia

57. Vereniging Voor Sterrenkunde (VVS), Moffelstraat 13 3370 Boutersem, Belgium

58. BAA Variable Star Section, 67 Ellerton Road, Kingstanding, Birmingham, B44 0QE, UK

59. 290-383 Ogata-cho, Sasebo, Nagasaki 858-0926, Japan

60. Subaru Telescope Okayama Branch Office, National Astronomical Observatory of Japan, NINS, 3037-5 Honjo, Kamogata, Asakuchi, Okayama 719-0232, Japan

61. Bischmisheim, Am Probstbaum 10, 66132 Saarbrücken, Germany

Abstract

Abstract 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 2017 season, and characterized these objects. WZ Sge-type stars identified in this study are PT And, ASASSN-17ei, ASASSN-17el, ASASSN-17es, ASASSN-17fn, ASASSN-17fz, ASASSN-17hw, ASASSN-17kd, ASASSN-17la, PNV J20205397$+$2508145, and TCP J00332502$-$3518565. We obtained new mass ratios for seven objects using growing superhumps (stage A). ASASSN-17gf is an EI Psc-type object below the period minimum. CRTS J080941.3$+$171528 and DDE 51 are objects in the period gap, and both showed a long-lasting phase of stage A superhumps. We also summarize the recent advances in understanding of SU UMa-type and WZ Sge-type dwarf novae.

Funder

VEGA

NSF

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

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