ASASSN-15jd: WZ Sge-type star with intermediate superoutburst between single and double ones
We present optical photometry of a WZ Sge-type dwarf nova (DN), ASASSN-15jd. Its light curve showed a small dip in the middle of the superoutburst in 2015 for the first time among WZ Sge-type DNe. The unusual light curve implies a delay in the growth of the 3 : 1 resonance tidal instability. Also, t...
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| Veröffentlicht in: | Publications of the Astronomical Society of Japan 2016-08, Vol.68 (4) |
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| creator | Kimura, Mariko Isogai, Keisuke Kato, Taichi Imada, Akira Kojiguchi, Naoto Sugiura, Yuki Fukushima, Daiki Takeda, Nao Matsumoto, Katsura Dvorak, Shawn Vanmunster, Tonny Dubovsky, Pavol A. Kudzej, Igor Miller, Ian Pavlenko, Elena P. Babina, Julia V. Antonyuk, Oksana I. Baklanov, Aleksei V. Stein, William L. Andreev, Maksim V. Tordai, Tamás Itoh, Hiroshi Pickard, Roger D. Nogami, Daisaku |
| description | We present optical photometry of a WZ Sge-type dwarf nova (DN), ASASSN-15jd. Its light curve showed a small dip in the middle of the superoutburst in 2015 for the first time among WZ Sge-type DNe. The unusual light curve implies a delay in the growth of the 3 : 1 resonance tidal instability. Also, the light curve is similar to those of two other WZ Sge-type stars, SSS J122221.7−311523 and OT J184228.1+483742, which are believed to be the best candidates for period bouncers on the basis of their small values of the mass ratio (q ≡ M
2/M
1). Additionally, the small mean superhump amplitude ( |
| doi_str_mv | 10.1093/pasj/psw054 |
| format | Article |
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2/M
1). Additionally, the small mean superhump amplitude (<0.1 mag) and the long duration of no ordinary superhumps at the early stage of its superoutburst are common to the best candidates for period bouncers. Its average superhump period was P
sh = 0.0649810(78) d and no early superhumps were detected. Although we could not estimate a mass ratio of ASASSN-15jd with high accuracy, this object is expected to be a candidate for a period bouncer—a binary accounting for the missing population of post-period minimum cataclysmic variables—based on the above characteristics.</description><identifier>ISSN: 0004-6264</identifier><identifier>EISSN: 2053-051X</identifier><identifier>DOI: 10.1093/pasj/psw054</identifier><language>eng</language><publisher>Oxford University Press</publisher><ispartof>Publications of the Astronomical Society of Japan, 2016-08, Vol.68 (4)</ispartof><rights>The Author 2016. Published by Oxford University Press on behalf of the Astronomical Society of Japan. All rights reserved. For Permissions, please email: journals.permissions@oup.com . 2016</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c301t-dafc8180165c72ce90dfa5afe04194c59e6871ac6315200758356d9199ecf6983</citedby><cites>FETCH-LOGICAL-c301t-dafc8180165c72ce90dfa5afe04194c59e6871ac6315200758356d9199ecf6983</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,1578,27901,27902</link.rule.ids></links><search><creatorcontrib>Kimura, Mariko</creatorcontrib><creatorcontrib>Isogai, Keisuke</creatorcontrib><creatorcontrib>Kato, Taichi</creatorcontrib><creatorcontrib>Imada, Akira</creatorcontrib><creatorcontrib>Kojiguchi, Naoto</creatorcontrib><creatorcontrib>Sugiura, Yuki</creatorcontrib><creatorcontrib>Fukushima, Daiki</creatorcontrib><creatorcontrib>Takeda, Nao</creatorcontrib><creatorcontrib>Matsumoto, Katsura</creatorcontrib><creatorcontrib>Dvorak, Shawn</creatorcontrib><creatorcontrib>Vanmunster, Tonny</creatorcontrib><creatorcontrib>Dubovsky, Pavol A.</creatorcontrib><creatorcontrib>Kudzej, Igor</creatorcontrib><creatorcontrib>Miller, Ian</creatorcontrib><creatorcontrib>Pavlenko, Elena P.</creatorcontrib><creatorcontrib>Babina, Julia V.</creatorcontrib><creatorcontrib>Antonyuk, Oksana I.</creatorcontrib><creatorcontrib>Baklanov, Aleksei V.</creatorcontrib><creatorcontrib>Stein, William L.</creatorcontrib><creatorcontrib>Andreev, Maksim V.</creatorcontrib><creatorcontrib>Tordai, Tamás</creatorcontrib><creatorcontrib>Itoh, Hiroshi</creatorcontrib><creatorcontrib>Pickard, Roger D.</creatorcontrib><creatorcontrib>Nogami, Daisaku</creatorcontrib><title>ASASSN-15jd: WZ Sge-type star with intermediate superoutburst between single and double ones</title><title>Publications of the Astronomical Society of Japan</title><description>We present optical photometry of a WZ Sge-type dwarf nova (DN), ASASSN-15jd. Its light curve showed a small dip in the middle of the superoutburst in 2015 for the first time among WZ Sge-type DNe. The unusual light curve implies a delay in the growth of the 3 : 1 resonance tidal instability. Also, the light curve is similar to those of two other WZ Sge-type stars, SSS J122221.7−311523 and OT J184228.1+483742, which are believed to be the best candidates for period bouncers on the basis of their small values of the mass ratio (q ≡ M
2/M
1). Additionally, the small mean superhump amplitude (<0.1 mag) and the long duration of no ordinary superhumps at the early stage of its superoutburst are common to the best candidates for period bouncers. Its average superhump period was P
sh = 0.0649810(78) d and no early superhumps were detected. Although we could not estimate a mass ratio of ASASSN-15jd with high accuracy, this object is expected to be a candidate for a period bouncer—a binary accounting for the missing population of post-period minimum cataclysmic variables—based on the above characteristics.</description><issn>0004-6264</issn><issn>2053-051X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp9kEFLwzAYhoMoOOZO_oGcvEjcl6ZJG29j6BSGHqooIpQ0-To7trYkKWP_3o159vS-vDy8h4eQaw53HLSY9iasp33YgUzPyCgBKRhI_nlORgCQMpWo9JJMQmgqSJTOuMrEiHzPillRvDAu1-6efnzRYoUs7nukIRpPd038oU0b0W_RNSYe5qFH3w2xGnyItMK4Q2xpaNrVBqlpHXXdUB1q12K4Ihe12QSc_OWYvD8-vM2f2PJ18TyfLZkVwCNzprY5z4ErabPEogZXG2lqhJTr1EqNKs-4sUpwmQBkMhdSOc21RlsrnYsxuT39Wt-F4LEue99sjd-XHMqjm_Lopjy5OdA3J7ob-n_BX7fAZfA</recordid><startdate>20160801</startdate><enddate>20160801</enddate><creator>Kimura, Mariko</creator><creator>Isogai, Keisuke</creator><creator>Kato, Taichi</creator><creator>Imada, Akira</creator><creator>Kojiguchi, Naoto</creator><creator>Sugiura, Yuki</creator><creator>Fukushima, Daiki</creator><creator>Takeda, Nao</creator><creator>Matsumoto, Katsura</creator><creator>Dvorak, Shawn</creator><creator>Vanmunster, Tonny</creator><creator>Dubovsky, Pavol A.</creator><creator>Kudzej, Igor</creator><creator>Miller, Ian</creator><creator>Pavlenko, Elena P.</creator><creator>Babina, Julia V.</creator><creator>Antonyuk, Oksana I.</creator><creator>Baklanov, Aleksei V.</creator><creator>Stein, William L.</creator><creator>Andreev, Maksim V.</creator><creator>Tordai, Tamás</creator><creator>Itoh, Hiroshi</creator><creator>Pickard, Roger D.</creator><creator>Nogami, Daisaku</creator><general>Oxford University Press</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20160801</creationdate><title>ASASSN-15jd: WZ Sge-type star with intermediate superoutburst between single and double ones</title><author>Kimura, Mariko ; Isogai, Keisuke ; Kato, Taichi ; Imada, Akira ; Kojiguchi, Naoto ; Sugiura, Yuki ; Fukushima, Daiki ; Takeda, Nao ; Matsumoto, Katsura ; Dvorak, Shawn ; Vanmunster, Tonny ; Dubovsky, Pavol A. ; Kudzej, Igor ; Miller, Ian ; Pavlenko, Elena P. ; Babina, Julia V. ; Antonyuk, Oksana I. ; Baklanov, Aleksei V. ; Stein, William L. ; Andreev, Maksim V. ; Tordai, Tamás ; Itoh, Hiroshi ; Pickard, Roger D. ; Nogami, Daisaku</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c301t-dafc8180165c72ce90dfa5afe04194c59e6871ac6315200758356d9199ecf6983</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kimura, Mariko</creatorcontrib><creatorcontrib>Isogai, Keisuke</creatorcontrib><creatorcontrib>Kato, Taichi</creatorcontrib><creatorcontrib>Imada, Akira</creatorcontrib><creatorcontrib>Kojiguchi, Naoto</creatorcontrib><creatorcontrib>Sugiura, Yuki</creatorcontrib><creatorcontrib>Fukushima, Daiki</creatorcontrib><creatorcontrib>Takeda, Nao</creatorcontrib><creatorcontrib>Matsumoto, Katsura</creatorcontrib><creatorcontrib>Dvorak, Shawn</creatorcontrib><creatorcontrib>Vanmunster, Tonny</creatorcontrib><creatorcontrib>Dubovsky, Pavol A.</creatorcontrib><creatorcontrib>Kudzej, Igor</creatorcontrib><creatorcontrib>Miller, Ian</creatorcontrib><creatorcontrib>Pavlenko, Elena P.</creatorcontrib><creatorcontrib>Babina, Julia V.</creatorcontrib><creatorcontrib>Antonyuk, Oksana I.</creatorcontrib><creatorcontrib>Baklanov, Aleksei V.</creatorcontrib><creatorcontrib>Stein, William L.</creatorcontrib><creatorcontrib>Andreev, Maksim V.</creatorcontrib><creatorcontrib>Tordai, Tamás</creatorcontrib><creatorcontrib>Itoh, Hiroshi</creatorcontrib><creatorcontrib>Pickard, Roger D.</creatorcontrib><creatorcontrib>Nogami, Daisaku</creatorcontrib><collection>CrossRef</collection><jtitle>Publications of the Astronomical Society of Japan</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kimura, Mariko</au><au>Isogai, Keisuke</au><au>Kato, Taichi</au><au>Imada, Akira</au><au>Kojiguchi, Naoto</au><au>Sugiura, Yuki</au><au>Fukushima, Daiki</au><au>Takeda, Nao</au><au>Matsumoto, Katsura</au><au>Dvorak, Shawn</au><au>Vanmunster, Tonny</au><au>Dubovsky, Pavol A.</au><au>Kudzej, Igor</au><au>Miller, Ian</au><au>Pavlenko, Elena P.</au><au>Babina, Julia V.</au><au>Antonyuk, Oksana I.</au><au>Baklanov, Aleksei V.</au><au>Stein, William L.</au><au>Andreev, Maksim V.</au><au>Tordai, Tamás</au><au>Itoh, Hiroshi</au><au>Pickard, Roger D.</au><au>Nogami, Daisaku</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>ASASSN-15jd: WZ Sge-type star with intermediate superoutburst between single and double ones</atitle><jtitle>Publications of the Astronomical Society of Japan</jtitle><date>2016-08-01</date><risdate>2016</risdate><volume>68</volume><issue>4</issue><issn>0004-6264</issn><eissn>2053-051X</eissn><abstract>We present optical photometry of a WZ Sge-type dwarf nova (DN), ASASSN-15jd. Its light curve showed a small dip in the middle of the superoutburst in 2015 for the first time among WZ Sge-type DNe. The unusual light curve implies a delay in the growth of the 3 : 1 resonance tidal instability. Also, the light curve is similar to those of two other WZ Sge-type stars, SSS J122221.7−311523 and OT J184228.1+483742, which are believed to be the best candidates for period bouncers on the basis of their small values of the mass ratio (q ≡ M
2/M
1). Additionally, the small mean superhump amplitude (<0.1 mag) and the long duration of no ordinary superhumps at the early stage of its superoutburst are common to the best candidates for period bouncers. Its average superhump period was P
sh = 0.0649810(78) d and no early superhumps were detected. Although we could not estimate a mass ratio of ASASSN-15jd with high accuracy, this object is expected to be a candidate for a period bouncer—a binary accounting for the missing population of post-period minimum cataclysmic variables—based on the above characteristics.</abstract><pub>Oxford University Press</pub><doi>10.1093/pasj/psw054</doi><oa>free_for_read</oa></addata></record> |
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| title | ASASSN-15jd: WZ Sge-type star with intermediate superoutburst between single and double ones |
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