Spectroscopic and photometric observations of dwarf nova superoutbursts by the 3.8 m telescope Seimei and the Variable Star Network

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dc.authoridBelinski, Alexander A./0000-0003-3469-0989
dc.authoridBurgaz, Umut/0000-0003-0126-3999
dc.authoridTampo, Yusuke/0000-0003-0196-3936
dc.authoridOtsuka, Masaaki/0000-0001-7076-0310
dc.authoridDubovsky, Pavol/0000-0001-5541-2836
dc.authorscopusid57216928597
dc.authorscopusid57040818700
dc.authorscopusid57041361000
dc.authorscopusid12789888300
dc.authorscopusid57203264146
dc.authorscopusid7405278291
dc.authorscopusid56893033400
dc.authorwosidBelinski, Alexander A./AAN-7241-2020
dc.authorwosidAntoniuk, Oksana/AAX-9086-2021
dc.authorwosidBurgaz, Umut/AAI-9565-2021
dc.contributor.authorTampo, Yusuke
dc.contributor.authorIsogai, Keisuke
dc.contributor.authorKojiguchi, Naoto
dc.contributor.authorMaehara, Hiroyuki
dc.contributor.authorTaguchi, Kenta
dc.contributor.authorKato, Taichi
dc.contributor.authorKimura, Mariko
dc.date.accessioned2023-01-12T20:00:33Z
dc.date.available2023-01-12T20:00:33Z
dc.date.issued2021
dc.departmentN/A/Departmenten_US
dc.description.abstractWe present spectroscopic and photometric observations of 17 dwarf-nova superoutbursts obtained by KOOLS-IFU mounted on the 3.8 m telescope Seimei at the Okayama Observatory of Kyoto University and through the Variable Star Network collaboration (VSNET). Our spectroscopic observations for six outbursts were performed within 1d of their optical peak. 11 objects (TCP J00590972+3438357, ASASSN-19ado, TCP J06073081-0101501, ZTF20aavnpug, ASASSN-19ady, MASTER OT J061642.05+435617.9, TCP J20034647+1335125, ASASSN-20kv, ASASSN-20kw, MASTER OT J213908.79+161240.2, and ASASSN-20mf) were previously unknown systems, and our observations enabled quick classification of their transient type. These results illustrate that the Seimei telescope has the capability to conduct quick follow-up observations of unknown transients. Our photometric observations yielded that 11 of the objects are WZ Sge-type dwarf novae and their candidates, and the other six are SU UMa-type dwarf novae and their candidates. The Heii 4686 angstrom emission line was clearly detected among ASASSN-19ado, TCP J06073081-0101501 and MASTER OT J213908.79+161240.2, the association of which with a spiral arm structure in an accretion disk has been suggested in previous studies. Our result suggests that a higher-inclination system shows a stronger emission line of Heii 4686 angstrom, as well as larger-amplitude early superhumps.en_US
dc.description.sponsorshipJapan Society for the Promotion of Science (JSPS) KAKENHI [JP18H05223, JP20H00174, JP20H04737]; Turkish Scientific and Technical Research Council [TUBITAK-2211C, 2214A]; Slovak Research and Development Agency [APVV-15-0458]; Slovak Academy of Sciences grant VEGA [2/0030/21]; Interdisciplinary Scientific and Educational School of Moscow University; National Science Foundation [AST1440341]; Caltech; IPAC; Weizmann Institute for Science; Oskar Klein Center at Stockholm University; University of Maryland; University of Washington; Deutsches Elektronen-Synchrotron; Humboldt University; Los Alamos National Laboratories; TANGO Consortium of Taiwan; University of Wisconsin at Milwaukee; Lawrence Berkeley National Laboratories; UKRI Science and Technology Facilities Council; University of Edinburgh [ST/N002512/1]; Queen's University Belfast [ST/N002520/1]; UK Science Consortiumen_US
dc.description.sponsorshipWe thank world-wide professional and amateur observers who have shared data with VSNET and VSOLJ. Keiichi Maeda acknowledges support from the Japan Society for the Promotion of Science (JSPS) KAKENHI grant JP18H05223, JP20H00174, and JP20H04737. Umut Burgaz acknowledges the support provided by the Turkish Scientific and Technical Research Council (TUBITAK-2211C and 2214A). This work was supported by the project APVV-15-0458 Interacting binaries-Key for the Understanding of the Universe. This work was supported by the Slovak Research and Development Agency under the contract No. APVV-15-0458 and by the Slovak Academy of Sciences grant VEGA No. 2/0030/21. The authors from Sternberg institute thank the Program of Development of Lomonosov MSU Leading Scientific Schools. Alexandr A. Belinski, Natalia P. Ikonnikova and Marina A. Burlak (SAI MSU) are supported by the Interdisciplinary Scientific and Educational School of Moscow University Fundamental and Applied Space Research. We acknowledge ESA Gaia, DPAC and the Photometric Science Alerts Team ~http://gsaweb.ast.cam.ac.uk/alerts.Based on observations obtained with the Samuel Oschin 48-inch Telescope at the Palomar Observatory as part of the Zwicky Transient Facility project. ZTF is supported by the National Science Foundation under Grant No. AST1440341 and a collaboration including Caltech, IPAC, the Weizmann Institute for Science, the Oskar Klein Center at Stockholm University, the University of Maryland, the University of Washington, Deutsches Elektronen-Synchrotron and Humboldt University, Los Alamos National Laboratories, the TANGO Consortium of Taiwan, the University of Wisconsin at Milwaukee, and Lawrence Berkeley National Laboratories. Operations are conducted by COO, IPAC, and UW. Lasair is supported by the UKRI Science and Technology Facilities Council and is a collaboration between the University of Edinburgh (grant ST/N002512/1) and Queen's University Belfast (grant ST/N002520/1) within the LSST:UK Science Consortium. This research has made use of the Aladin sky atlas developed at CDS, Strasbourg Observatory, France (Bonnarel et al. 2000; Boch & Fernique 2014).en_US
dc.identifier.doi10.1093/pasj/psab036
dc.identifier.endpage771en_US
dc.identifier.issn0004-6264
dc.identifier.issn2053-051X
dc.identifier.issn0004-6264en_US
dc.identifier.issn2053-051Xen_US
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-85109005063en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage753en_US
dc.identifier.urihttps://doi.org/10.1093/pasj/psab036
dc.identifier.urihttps://hdl.handle.net/11454/77355
dc.identifier.volume73en_US
dc.identifier.wosWOS:000671559500024en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherOxford Univ Pressen_US
dc.relation.ispartofPublications Of The Astronomical Society Of Japanen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectaccretionen_US
dc.subjectaccretion disksen_US
dc.subjectnovaeen_US
dc.subjectcataclysmic variablesen_US
dc.subjectstars: dwarf novaeen_US
dc.subjectTime-Resolved Spectroscopyen_US
dc.subjectWz Sgeen_US
dc.subjectPeriod Variationsen_US
dc.subjectCataclysmic Variablesen_US
dc.subjectAccretion Disksen_US
dc.subjectUrsae Majorisen_US
dc.subjectSpiral Shocksen_US
dc.subjectU-Geminorumen_US
dc.subjectEg Cancrien_US
dc.subjectSs-Cygnien_US
dc.titleSpectroscopic and photometric observations of dwarf nova superoutbursts by the 3.8 m telescope Seimei and the Variable Star Networken_US
dc.typeArticleen_US

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