J/MNRAS/502/5668ivo://CDS.VizieR/J/MNRAS/502/5668doi:10.26093/cds/vizier.75025668CDSVogt N.Puebla E.C.Contreras-Quijada A.2024-08-21T20:17:17Z2023-11-16T10:50:41ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frvariable-starsdwarf-starsnovaecataclysmic-variable-starsvisible-astronomySU UMa stars are characterized by 'superoutbursts', which are brighter at maximum light and which last much longer than the more frequent 'ordinary' outbursts of these dwarf novae. Although there are now more than 1180 SU UMa-type dwarf novae catalogued, our knowledge on their superoutburst cycle length C_so_ has hitherto been limited to about 6 per cent of the entire sample of known SU UMa stars. Using public data bases we have determined new C_so_ values for a total of 206 additional SU UMa stars in the range 17d<C_so_<4590d (including some ER UMa and WZ Sge-type representants) within total time intervals between 2 and 57yr, and with an estimated uncertainty of +/-11 per cent. This way, we are increasing our present knowledge of C_so_ values by a factor of ~3.8. Their distribution is characterized by a broad maximum around C_so_~270d, and slowly decreasing numbers up to C_so_~800d. The domain C_so_>450d was unexplored until now; we add here 106 cases (~51 per cent of our total sample) in this range of long cycles, implying a better statistical basis for future studies of their distribution. Our sample contains 16 known WZ Sge stars, and we propose WZ Sge membership for five others hitherto classified as ordinary SU UMa stars. Individual superoutburst timings deviate on average by about +/-7 per cent of the cycle length from their overall linear ephemeris, confirming the pronounced quasi-periodic repeatability of superoutbursts. All relevant parameters are listed with their errors, and a table with individual superoutburst epochs of our targets is given, enabling future researchers to combine our results with other (past or future) observations.2021MNRAS.502.5668Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/502/5668CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-)B/cb : Cataclysmic Binaries, LMXBs, and related objectsII/264 : ASAS Variable Stars in Southern hemisphereJ/ApJ/696/870 : Catalina Real-time Transient Survey (CRTS) (Drake+, 2009)I/345 : Gaia DR2 (Gaia Collaboration, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/502/5668https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/502/5668http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/502/5668https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/502/5668https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/502/5668http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/502/5668GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/502/5668/table1 (New cycle length values of 206 SU UMa-type outbursts)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/502/5668/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/502/5668/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/502/5668/table1?GETtext/xml+votable180.050000true0.102533.4286110.005555555555555556Cone search capability for table J/MNRAS/502/5668/table3 (Data used for our statistical comparison with published information)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/502/5668/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/502/5668/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/502/5668/table3?GETtext/xml+votable180.050000true0.102533.4286110.0055555555555555566/119 457 475 569 901 951 995 1002 1171 1253 1411 1639 1703 2035 2172-2173 2248 2286 2309 2365 2372 2708 2947 2964 3011 3029 3247 3292 3423 3509 3908 4129-4130 4196 4296 4437 4453 4618 4622 4714 4721 4723 4747 4761 4844 4859 4999 5089 5210 5485 5596 5650 5727 5833 5883 5918 6052 6076 6227 6289 6398 6570 6621 7040 7194 7199 7211 7320 7371 7657 7659 7752 8269 8534 8559 8732 8821 8977 9165 9189 9214 9231 9333 9402 9467 9562 9718 10232 10938 11168 11391 11515 12053 12288 12300 12479 12496 12500 12612 12625 12699 12709 12748 12762 12792 12924 12932-12933 12976 12979 13488 13595 13849 13969 13971 14060 14431 14463 14477 14502 14701 14727 14784 14899 14930 14936 15041 15105 15169 15201 15205 15878 15881 15949 16041 16734 17022 17205 17326 17515 17801 18303 18520 18651 18844 19194 19297 19316 19366 19592 19828 19914 19960 20112 20296 20332 20428 20773 20802 21603 21685 21822-21823 22015 22424 22683 22813 22828 22894 22947 23050 23152 23953 23989 24061 24097 24164 24217 24466 25010 25232 25359 25506 25709 25934 26207 26693 26818 26995 27004 27377 27945 28127 28194 28711 28823 29217 29288 29844 30469 30577-30578 30682 30949 30962 31166 31331 31418 31545 31681 31689 31696 31863 32137 32339 32375 32423 32432 32552 32660 32862 33067 33282 33403 33446 33546 34066 34950 34961 36008 36221 36471 36490 36719 36942 37022 37252 37462 37504 37968 38139 38229 38348 39253 40165 40201 40255 40401 40826 41307 41390 41426 41623 42267 42342 42557 42653 42867 42910 43403 43743 43762 43882 44660 45098 45254 45690 45751 46002 46591 46969 47315 47331 48573 48671 48724 48840 48849 48973 49004https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/502/5668?format=asciiOpticaldefaultJ/MNRAS/502/5668/table1New cycle length values of 206 SU UMa-type outburstsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainNNumber of superoutbursts covered within the time interval {Delta}Tmeta.numberintDTTime interval {Delta}Tdtime.intervalintT0Epoch (JD-2450000) of the first superoutburst (1)dtime.epochinte_T0Error on T0dstat.errorfloatCsoSupercycle length (1)dtime.epochfloate_CsoError on Csodstat.errorfloatO-CMean standard deviation of the actual superoutburst epochs from the linear ephemeris equation (1)stat.stdevfloatRemarksRemarks (2)meta.notecharTmaxT_max_ versus E plotmeta.ref.urlcharJ/MNRAS/502/5668/table2New WZ Sge-type candidate starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharONameAlternative namemeta.idcharPorbOrbital perioddtime.periodfloatPsSuperhump perioddtime.periodfloatAmpVOutburst amplitude in the V-bandmagphot.magfloatNNumber of superoutbursts covered within the time interval {Delta}Tmeta.numberintCsoSupercycle lengthdtime.epochintRef? Reference (1)meta.ref;pos.frameintnullableJ/MNRAS/502/5668/table3Data used for our statistical comparison with published informationSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMoreLink to Tables 1, 2 and 4meta.ref.urlcharNameSource namemeta.id;meta.maincharprimaryRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainCn? Cycle length of normal (short) outburstdtime.epochintnullableCsoCycle lengths of superoutburstdtime.epochfloatRefReferences (1)meta.refcharJ/MNRAS/502/5668/table4Cycle count numbers E and epochs T_max_ (JD 2450000) of individual superoutbursts used for the calculation of the parameters in Table 1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharECycle count numbermeta.numberintTmaxEpoch of maximum brightness (JD-2450000)dtime.epochdouble