J/PASJ/64/63ivo://CDS.VizieR/J/PASJ/64/63doi:10.26093/cds/vizier/bj-20-1zCDSKato T.Maehara H.Uemura M.2026-03-17T20:05:22Z2012-10-23T13:24:54ZCDS support team

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

cds-question@unistra.frnovaevisible-astronomysloan-photometryWe have developed a method for estimating the orbital periods of dwarf novae from the Sloan Digital Sky Survey (SDSS) colors in quiescence using an artificial neural network. For typical objects below the period gap with sufficient photometric accuracy, we were able to estimate the orbital periods with accuracy to a 1{sigma} error of 22%. The error of the estimation is worse for systems with longer orbital periods. We have also developed a neural-network-based method for categorical classification. This method has proven to be efficient in classifying objects into three categories (WZ Sge type, SU UMa type, and SS Cyg/Z Cam type), and works for very faint objects to a limit of g=21mag. Using this method, we have investigated the distribution of the orbital periods of dwarf novae from a modern transient survey (Catalina Real-Time Survey).2012PASJ...64...63Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/PASJ/64/63CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://nesssi.cacr.caltech.edu/catalina/ : Catalina Real-Time Survey (CRTS)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/PASJ/64/63https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/PASJ/64/63http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/PASJ/64/63https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/PASJ/64/63https://vizier.iucaa.in/viz-bin/votable?-source=J/PASJ/64/63http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/PASJ/64/63GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/PASJ/64/63/dnovae (List of dwarf novae, estimated extinction, and neural-network classification)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/PASJ/64/63/dnovae?https://vizier.iucaa.in/viz-bin/conesearch/J/PASJ/64/63/dnovae?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/PASJ/64/63/dnovae?GETtext/xml+votable180.050000true16.148083341.29938890.0055555555555555566/389 569 575 597 665 935 951 1010 1171 1249 1563 1679 1694 1703 1710 1720 1781 2035 2089 2153 2167 2183 2209 2235 2242 2248 2250 2253 2274 2280 2297 2607 2623 2661 2672 2705 2883 3874 4120 4123 4129-4130 4145 4149 4171 4174 4193 4195-4196 4201 4216 4219 4256 4269 4271 4273 4294 4296 4341 4356 4437 4453 4479 4515 4603 4607 4618 4622 4650 4653 4668 4695 4709 4714 4721 4723 4726 4747 4761 4766 4768-4769 4773 4782 4791 4844 4906 4964 4976 4988 4999 5005 5058 5062 5064 5071 5089 5129 5153 5197 5210 5313 5345 5375 5409 5457 5505 5569 5584 5596 5626 5719 5727 5756 5779 5808 5833 5864 5883 5918 5929 5976 6052 6076 6131 6148-6149 6167 6227 6235 6237 6245 6257-6258 6266-6267 6398 6439 6444 6491 6531 6570 6588 6598-6599 6608 6611 6613 6621 6643 6739 6913 7168 7172-7173 7194 7199 7211 7248 7320 7348 7371 7390 7400 7465 7514 7518 7607 7636 8268-8269 8281 8291 8296 8307 8330 8359 8423 8453 8494 8497 8520 8534 8545 8559 8562 8566 8610 8630 8688 8732 8821 8830 8848 9040 9165 9189 9214 9219 9227 9231 9238 9301 9309 9311 9333 9340 9402 9422 9434 9441 9447 9467 9504 9520 9645 9653 9656 9716 9738 9740 9747 9756 9758 9832 9849 9923 10085 10190 10232 10242 10316 10507 10598 10938 11008 11072 11168 11217 11230 11251 11280 11319 11324 11332-11333 11365 11371 11391 11396 11456 11461 11489 11640 11929 11931 12288-12289 12292 12300 12337 12376 12398 12408 12479 12511 12551 12556 12560 12590 12612 12615 12625 12646 12709 12748 13106 13315 13330 13332 13337 13351 13374-13375 13398 13435 13461 13504 13522 13659 13807 13814 14052 14059-14060 14275 14278 14462 14548 14625 14681 14917 15689 16035 16280 17248 17326 17341 17515 17600 17767 17801 17983 17986 18027 18045 18061 18071 18160 18167 18229 18275 18303 18329 18354 18520 18533 18545 18651 18777 18784 18844 18859 18861 18882 18915 18927 18975 18998 19000 19012 19032 19050 19062 19073 19076 19078 19089 19091-19092 19110 19153 19194 19197 19227 19230 19297 19330 19359 19366 19370 19385 19407 19418 19453 19504 19526 19592 19639 19775 19791 19822 19828 19881 19916 19943 19958 19960 20034 20066 20106 20112 20128 20162 20168 20174 20192 20214 20296 20301 20304 20318 20332 20335 20346 20365 20384 20428 20860 21823 21831 21850 21862 21879 21883 21911 22001 22010 22012 22015 22166 22344 22356 22384 22443 22485 22716 22745 22752 22828 22869 22888 22894 22911 22947 22955 22958 22978 23050 23127 23152 23192 23217 23278 23400 23488 23544 23861 24061 24164 24348 24895 25060 25223 25310 25506-25507 25567 25683 25690 25839 25934 25944 25952 25990 26126 26157 26171 26207 26226 26305 26315-26316 26358 26554 26588 26979 26995 27004 27115 27206 27208 27254 27291 27325 27343 27384 27386 27419 27426 27446 27455 27480 27482 27499 27591 27612 27626 27671 27945 27982 28104 28127 28194 28333 28370 28485 28501 28616 29406 29787 29969 30041 30577-30578 30682 30770 30962 30970 30973 31109 31145 31166 31309 31317 31321 31331 31336 31355 31373 31380 31423 31464 31521 31545 31586 31618 31626 31634 31642 31652 31681 31684 31689-31690 31696 31699 31715 31770 31802 31904 32179 32290 32294 32314 32408 32417 32423 32432 32436 32442 32472 32493 32501 32505 32552 32677 32764 36521 36531 40959 44517-44518 44737 44792 48938 49004 49097 49100 49118 49120 49129 491512.040811542443644e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/PASJ/64/63?format=asciiOpticaldefaultJ/PASJ/64/63/dnovaeList of dwarf novae, estimated extinction, and neural-network classificationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintf_NameSimbad column added by the CDSmeta.ref.urlcharNameObject namemeta.id;meta.maincharprimaryn_Name[+] Note on Name (G1)meta.notecharumagSDSS u magnitudemagphot.mag;em.opt.Bfloate_umagrms uncertainty on umagmagstat.error;phot.mag;em.opt.Ufloatgmag? SDSS g magnitudemagphot.mag;em.opt.Bfloatnullablee_gmag? rms uncertainty on gmagmagstat.error;phot.mag;em.opt.Bfloatnullablermag? SDSS r magnitudemagphot.mag;em.opt.Bfloatnullablee_rmag? rms uncertainty on rmagmagstat.error;phot.mag;em.opt.Rfloatnullableimag? SDSS i magnitudemagphot.mag;em.opt.Bfloatnullablee_imag? rms uncertainty on imagmagstat.error;phot.mag;em.opt.IfloatnullablezmagSDSS z magnitudemagphot.mag;em.opt.Bfloate_zmagrms uncertainty on zmagmagstat.error;phot.mag;em.opt.IfloatPorb? Orbital perioddtime.periodfloatnullablen_Porb[h] h = Determined from superhump periodmeta.notecharPest? Orbital period estimated with neural networkdtime.periodfloatnullablee_Pest? rms uncertainty on Pestdstat.errorfloatnullableDistDistancepcpos.distance;pos.heliocentricintn_Dist[1/6] Distance estimation method (2)meta.noteintAVAbsorption in V bandmagphot.mag;em.opt.VfloatPU[0/1]? Probability of being of WZ Sge type (ultrashort period P_orb_<0.06d)stat.fit.goodnessfloatnullablee_PU[0/1]? rms uncertainty on PUstat.errorfloatnullablePS[0/1]? Probability of being of SU UMa type (short period, 0.06<=P_orb_<0.10d)stat.fit.goodnessfloatnullablee_PS[0/1]? rms uncertainty on PSstat.errorfloatnullablePL[0/1]? Probability of being of SS Cyg type (long period, P_orb_>=0.10d)stat.fit.goodnessfloatnullablee_PL[0/1]? rms uncertainty PLstat.errorfloatnullableSimbadNameSimbad column added by the CDSmeta.idchar_RAPositions from Simbad or Name (right ascension part)degpos.eq.ra;meta.main_DEPositions from Simbad or Name (declination part)degpos.eq.dec;meta.mainJ/PASJ/64/63/table2Averaged P_orb_ estimates for objects with more SDSS scans than fourrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject namemeta.id;meta.maincharn_Name[+] Note on Name (G1)meta.notecharNNumber of SDSS scansmeta.numberintPestAverage orbital period (P_orb_) estimatedtime.period;stat.meanfloatsdPestStandard deviation of estimated P_orb_0.001dstat.errorinte_PestMean error of neutral network analysis on Pestdstat.errorfloatJ/PASJ/64/63/table5Catalina Real-Time Survey (CRTS) sources for the estimation of the intrinsic P_orb_ distributionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPestEstimated periodmintime.periodfloatf_Pest[~] Limit flag on e_Pestmeta.codechare_Pestrms uncertainty on Pestminstat.errorfloatNNumber of outbursts recorded by CRTS (Catalina Real-Time Survey)meta.numberintu_NUncertainty flag on Nmeta.code.errorcharNameObject namemeta.id;meta.maincharJ/PASJ/64/63/table7Identification list of optical transientsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject namemeta.id;meta.maincharIDIdentification namemeta.idcharDiscDiscovererobs.observerchar