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29 March 2024 |
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Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. IX: The Ninth Year (2016-2017) | Taichi Kato
; Keisuke Isogai
; Franz-Josef Hambsch
; Tonny Vanmunster
; Hiroshi Itoh
; Berto Monard
; Tamaas Tordai
; Mariko Kimura
; Yasuyuki Wakamatsu
; Seiichiro Kiyota
; 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
; | Date: |
13 Jun 2017 | Abstract: | 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 statistics of relation between the orbital period and the variation of
superhumps, the relation between period variations and the rebrightening type
in WZ Sge-type objects. We obtained the period minimum of 0.05290(2)d and
confirmed the presence of the period gap above the orbital period ~0.09d. We
note that four objects (NY Her, 1RXS J161659.5+620014, CRTS J033349.8-282244
and SDSS J153015.04+094946.3) have supercycles shorter than 100d but show
infrequent normal outbursts. We consider that these objects are similar to V503
Cyg, whose normal outbursts are likely suppressed by a disk tilt. These four
objects are excellent candidates to search for negative superhumps. DDE 48
appears to be a member of ER UMa-type dwarf novae. We identified a new
eclipsing SU UMa-type object MASTER OT J220559.40-341434.9. We observed 21 WZ
Sge-type dwarf novae during this interval and reported 18 out of them in this
paper. Among them, ASASSN-16js is a good candidate for a period bouncer.
ASASSN-16ia showed a precursor outburst for the first time in a WZ Sge-type
superoutburst. ASASSN-16kg, CRTS J000130.5+050624 and SDSS J113551.09+532246.2
are located in the period gap. We have newly obtained 15 orbital periods,
including periods from early superhumps. | Source: | arXiv, 1706.3870 | Services: | Forum | Review | PDF | Favorites |
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