J/A+A/687/A305ivo://CDS.VizieR/J/A+A/687/A305doi:10.26093/cds/vizier.36870305CDSMunoz-Giraldo D.Stelzer B.Schwope A.2024-11-29T20:04:06Z2024-07-30T09:41:02ZCDS support team

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

cds-question@unistra.frcataclysmic-variable-starsx-ray-binary-starswhite-dwarf-starsvisible-astronomysloan-photometryinfrared-photometryultraviolet-astronomyCataclysmic variables with degenerate donors which have evolved past the period minimum, also known as period-bouncers, are predicted to make up a great portion of the cataclysmic variable population, between 40% and 70%. However, either due to shortcomings in the models or due to the intrinsic faintness of these strongly evolved systems, only a few have been confidently identified so far. We have compiled a multi-wavelength catalog of period-bouncers and cataclysmic variables around the period minimum (Porb~80min) from the literature in order to provide an in-depth characterization of the elusive subclass of period- bounce CVs that will help in the identification of new candidates. In this study we combine published or archival multi-wavelength data with new X-ray observations from the all-sky surveys carried out with the extended ROentgen Survey with an Imaging Telescope Array (eROSITA) onboard the Spektrum- Roentgen-Gamma spacecraft (SRG). We compiled a scorecard that is able to rate how likely a system is of being a period-bouncer that, together with X-ray selection cuts established from the eROSITA detected known period-bouncers, resulted in the confirmation of 7 systems as new period-bouncers. This brings the population of confirmed period-bouncers to 24 systems, corresponding to a ~40% increase. Our "scorecard" correctly assigns high scores to the already confirmed period-bouncers in our literature catalog and it identifies 80 additional strong period-bounce candidates present in the literature that have not been classified as such. We established two selection cuts based on the X-ray-to-optical flux ratio (-1.21<=log(Fx/Fopt)<=0) and the typical X-ray luminosity (log(Lx,bol)<=30.4[erg/s]) observed from the 8 already confirmed period-bouncers with eROSITA data. These X-ray selection cuts led to the categorization of 5 systems as new period-bouncers, increasing their population number to 22 systems. Our multi-wavelength catalog of cataclysmic variables around the period minimum compiled from the literature together with X-ray data from eROSITA resulted in a ~30% increase in the population of period-bouncers. Both the catalog and "scorecard" that we constructed will aid in future searches for new period-bounce candidates with the goal of resolving the discrepancy between the predicted high number of period-bouncers and the low number of these systems that have been observed to date.2024A&A...687A.305Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/687/A305CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/661/A44 : A first eROSITA view of ultracool dwarfs (Stelzer+, 2022)J/A+A/682/A34 : SRG/eROSITA all-sky survey catalogs (eRASS1) (Merloni+, 2024)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/687/A305https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/687/A305http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/687/A305https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/687/A305https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/687/A305http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/687/A305GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/687/A305/tableb2 (Complete catalog of period-bouncers and CVs around the period minimum)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/687/A305/tableb2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/687/A305/tableb2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/687/A305/tableb2?GETtext/xml+votable180.050000true183.038782164530031.607714232640.0055555555555555566/119 799 951 1002 1021 2035 2250 2365 2401 2409 2463 2681 2708 2785 3423 3440 3886 4120 4130 4618 4658 4999 5062 5120 5153 5191 5313 5457 5505 5650 5932 6042 6198 6245 6350 6398 6534 6643 6719 6762 6791 7199 7320 7534 7715 7781 7924 8267 8359 8549 8821 8830 9150 9165 9219 9562 9694 9723 11072 11168 11280 11319 11456 12116 12859 12976 12983 13019 13078 13335 13643 14463 14936 14951 14953 15063 15091 15205 15373 15497 15515 15630 15689 15764 15878 16041 16394 16734 16973 17767 17983 18027 18275 18927 19385 19460 19574 19619 19914 20332 20494 20678 20802 22344 22424 22828 22894 23451 23759 24655 25415 26157 26207 26287 26645 27115 27332 27377 27419 27667 27671 27811 27945 27956 28082 28118 28127 28333 28897 29184 29226 30469 30597 30682 30814 30863 31085 31571 31642 31701 32203 32248 32322 32432 32633 32651 32725 32757 33434 33498 33933 34161 34267 35198 35905 36221 36234 36743 36750 37252 37462 38348 38373 38674 38954 40037 40802 40826 41426 42342 43762 43940 43976 44077 44245 44326 44612 44893 46400 46767 46868 46871 46978 46999 47309 47457 47964 48628 48849 49120 491337.952274030004205e-20 1.4134638842407062e-18https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/687/A305?format=asciiX-rayUVOpticalInfrareddefaultJ/A+A/687/A305/tableb2Complete catalog of period-bouncers and CVs around the period minimumSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSystemObject namemeta.id;meta.maincharGaiaDR3? Gaia ID from data release 3meta.idnullableRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPorb? Orbital period of the systemhtime.perioddoublenullableMdonor1? Donor masssolMassphys.massdoublenullableMdonor2? Donor masssolMassphys.massdoublenullableDist? Distance to the system (3)pcpos.distancedoublenullableTwd? White dwarf temperatureKphys.temperaturedoublenullableMwd? White dwarf masssolMassphys.massfloatnullableWISE1? Infrared magnitude in WISE1-bandmagphot.mag;em.IR.3-4umfloatnullablee_WISE1? Magnitude error in WISE1-bandmagstat.errorfloatnullableWISE2? Infrared magnitude in WISE2-bandmagphot.mag;em.IR.4-8umfloatnullablee_WISE2? Magnitude error in WISE2-bandmagstat.errorfloatnullableWISE3? Infrared magnitude in WISE3-bandmagphot.flux.density;em.IR.8-15umfloatnullablee_WISE3? Magnitude error in WISE3-bandmagstat.errorfloatnullableWISE4? Infrared magnitude in WISE4-bandmagphot.flux.density;em.IR.15-30umfloatnullablee_WISE4? Magnitude error in WISE4-bandmagstat.errorfloatnullable2MASSJ? Infrared magnitude in 2MASS J-bandmagphot.mag;em.IR.Jfloatnullablee_2MASSJ? Magnitude error in 2MASS J-bandmagstat.errorfloatnullable2MASSH? Infrared magnitude in 2MASS H-bandmagphot.mag;em.IR.Hfloatnullablee_2MASSH? Magnitude error in 2MASS H-bandmagstat.errorfloatnullable2MASSK? Infrared magnitude in 2MASS K-bandmagphot.mag;em.IR.Kfloatnullablee_2MASSK? Magnitude error in 2MASS K-bandmagstat.errorfloatnullableUKIDSSY? Infrared magnitude in UKIDSS Y-bandmagphot.mag;em.IR.Jfloatnullablee_UKIDSSY? Magnitude error in UKIDSS Y-bandmagstat.errorfloatnullableUKIDSSJ? Infrared magnitude in UKIDSS J-bandmagphot.mag;em.IR.Jfloatnullablee_UKIDSSJ? Magnitude error in UKIDSS J-bandmagstat.errorfloatnullableUKIDSSH? Infrared magnitude in UKIDSS H-bandmagphot.mag;em.IR.Hfloatnullablee_UKIDSSH? Magnitude error in UKIDSS H-bandmagstat.errorfloatnullableUKIDSSK? Infrared magnitude in UKIDSS K-bandmagphot.mag;em.IR.Kfloatnullablee_UKIDSSK? Magnitude error in UKIDSS K-bandmagstat.errorfloatnullableVHSY? Infrared magnitude in VHS Y-bandmagphot.mag;em.IR.Jfloatnullablee_VHSY? Magnitude error in VHS Y-bandmagstat.errorfloatnullableVHSJ? Infrared magnitude in VHS J-bandmagphot.mag;em.IR.Jfloatnullablee_VHSJ? Magnitude error in VHS J-bandmagstat.errorfloatnullableVHSH? Infrared magnitude in VHS H-bandmagphot.mag;em.IR.Hfloatnullablee_VHSH? Magnitude error in VHS H-bandmagstat.errorfloatnullableVHSKs? Infrared magnitude in VHS Ks-bandmagphot.mag;em.IR.Kfloatnullablee_VHSKs? Magnitude error in VHS Ks-bandmagstat.errorfloatnullableGaiaG? Optical magnitude in Gaia G-bandmagphot.mag;em.optdoublenullablee_GaiaG? Magnitude error in Gaia G-bandmagstat.errordoublenullableGaiaBP? Optical magnitude in Gaia BP-bandmagphot.mag;em.opt.Bdoublenullablee_GaiaBP? Magnitude error in Gaia BP-bandmagstat.errordoublenullableGaiaRP? Optical magnitude in Gaia RP-bandmagphot.mag;em.opt.Rdoublenullablee_GaiaRP? Magnitude error in Gaia RP-bandmagstat.errordoublenullableSDSSu? Optical magnitude in SDSS u-bandmagphot.mag;em.opt.Ufloatnullablee_SDSSu? Magnitude error in SDSS u-bandmagstat.errorfloatnullableSDSSg? Optical magnitude in SDSS g-bandmagphot.mag;em.opt.Bfloatnullablee_SDSSg? Magnitude error in SDSS g-bandmagstat.errorfloatnullableSDSSr? Optical magnitude in SDSS r-bandmagphot.mag;em.opt.Rfloatnullablee_SDSSr? Magnitude error in SDSS r-bandmagstat.errorfloatnullableSDSSi? Optical magnitude in SDSS i-bandmagphot.mag;em.opt.Ifloatnullablee_SDSSi? Magnitude error in SDSS i-bandmagstat.errorfloatnullableSDSSz? Optical magnitude in SDSS z-bandmagphot.mag;em.opt.Ifloatnullablee_SDSSz? Magnitude error in SDSS z-bandmagstat.errorfloatnullableGALEXFUV? Ultraviolet magnitude in GALEX FUV-bandmagphot.mag;em.UVfloatnullablee_GALEXFUV? Magnitude error in GALEX FUV-bandmagstat.errorfloatnullableGALEXNUV? Ultraviolet magnitude in GALEX NUV-bandmagphot.mag;em.UVfloatnullableE_GALEXNUV? Magnitude error in GALEX NUV-bandmagstat.error;stat.maxfloatnullableMethod1[EM RV GR SED SH/] Method used to determine the donor mass (1)meta.notecharMassRatio1[x] Donor mass was obtained from a mass ratiophys.mass;arith.ratiocharMethod2[EM RV SH] Method used to determine the donor mass (2)meta.notecharMassRatio2[x] Donor mass was obtained from a mass ratiophys.mass;arith.ratiocharSpTdonorDonor spectral typesrc.spTypecharMethod[MPS] Method used to determine the donor spectral type (2)meta.notecharWDmagnet[M M? nM] Magnetism of the white dwarf (4)meta.codecharRefsLiterature references for the system, in refs.dat filemeta.ref;pos.framecharJ/A+A/687/A305/refsReferencesRefReference codemeta.noteintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintbibCodeBibCodemeta.bib.bibcodecharAutAuthors' namemeta.id;meta.maincharComCommentsmeta.notecharJ/A+A/687/A305/table3Scorecard rating a system's likelihood of being a period-bouncerrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSpTDonor[0/9]? Score for spectral type of donor (1)meta.codeintnullableMassDonor[0/3]? Score for donor mass (2)meta.codefloatnullablePorb[0/3]? Score for orbital period (3)meta.codeintnullableTWD[0/3]? Score for white dwarf temperature (4)meta.codeintnullableVarGaia[0/3]? Score for Gaia variability (5)meta.codeintnullableGaiaColors[0/3]? Score for Gaia colors (6)meta.codeintnullableSDSSColors[0/3]? Score for SDSS colors (7)meta.codeintnullableUVColors[0/3]? Score for ultraviolet colors (8)meta.codeintnullableIRColors[0/3]? Score for infrared colors (9)meta.codeintnullableExcess[0/3]? Score for infrared excess (10)meta.codeintnullableFinalSocre? Final percentage score%meta.codefloatnullableSystemObject namemeta.id;meta.mainchar