J/MNRAS/486/4574ivo://CDS.VizieR/J/MNRAS/486/4574doi:10.26093/cds/vizier.74864574CDSRowan D.M.Tucker M.A.Shappee B.J.Hermes J.J.2024-08-19T20:18:26Z2022-12-09T13:53:30ZCDS support team

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

cds-question@unistra.frwhite-dwarf-starsvariable-starsultraviolet-photometryvisible-astronomyWe search for photometric variability in more than 23000 known and candidate white dwarfs (WDs), the largest ultraviolet survey compiled for a single study of WDs. We use GPHOTON, a publicly available calibration/reduction pipeline, to generate time-series photometry of WDs observed by GALEX. By implementing a system of weighted metrics, we select sources with variability due to pulsations and eclipses. Although GALEX observations have short baselines (=<30min), we identify intrinsic variability in sources as faint as Gaia G=20mag. With our ranking algorithm, we identify 48 new variable WDs in archival GALEX observations. We detect 40 new pulsators: 36 have hydrogen-dominated atmospheres (DAVs), including one possible massive DAV, and four are helium-dominated pulsators (DBVs). We also detect eight new eclipsing systems; five are new discoveries, and three were previously known spectroscopic binaries. We perform synthetic injections of the light curve of WD 1145+017, a system with known transiting debris, to test our ability to recover similar systems. We find that the 3{sigma} maximum occurrence rate of WD 1145+017-like transiting objects is =<0.5 per cent.2019MNRAS.486.4574Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/486/4574CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)J/ApJS/204/5 : SDSS DR7 white dwarf catalog (Kleinman+, 2013)J/MNRAS/446/4078 : New white dwarf stars in SDSS DR10 (Kepler+, 2015)J/MNRAS/455/3413 : New white dwarf and subdwarf stars in SDSS DR12J/MNRAS/469/621 : VST ATLAS white dwarf candidates cat.https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/486/4574https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/486/4574http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/486/4574https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/486/4574https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/486/4574http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/486/4574GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/486/4574/table2 (Information on all detected variable WDs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/486/4574/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/486/4574/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/486/4574/table2?GETtext/xml+votable180.050000true7.4406414.704020.0055555555555555566/1 2227 2663 2778 4152 4285 5124 5244 5883 6091 6495 7171 7281 7285 7503 8244 8247 9336 9465 9513 9822 10492 10939 11093 11492 17308 17490 17970 18041 18555 18586 18753 19021 19161 19319 19753 19755 20060 20074 22365 25569 26255 27304 27537 27712 27905 27962 28157 29969 31402 31692 32702 34145 36612 36653 36795 44771 45846 46588 47217 49020 491311.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/486/4574?format=asciiUVOpticaldefaultJ/MNRAS/486/4574/table2Information on all detected variable WDsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharIDInternal object identifiermeta.idintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainGmagGaia DR2 G-band magnitudemagphot.mag;em.optfloatClassWhite dwarf classificationsrc.classcharSpTypeSpectral type (1)src.spTypecharPeriod? Variability period (2)ssrc.varintnullablee_Period? Error on Perdiod (2)sstat.error;time.periodintnullableNUVamp? NUV amplitude (per cent) (2)src.var.amplitudeintnullablee_NUVamp? Error on NUVamp (2)stat.errorintnullableFUVamp? FUV amplitude (per cent) (2)src.var.amplitudeintnullablee_FUVamp? Error on FUVamp (2)stat.errorintnullablerefReferences for known WD pulsators and binaries detected (3)meta.refchar