J/A+A/664/A165ivo://CDS.VizieR/J/A+A/664/A165doi:10.26093/cds/vizier.36640165CDSModiano D.Wijnands R.Buckley D.A.H.Gromadzki M.Verberne S.,van Etten M.2023-03-20T14:19:09Z2022-08-25T09:15:40ZCDS support team

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

cds-question@unistra.frcataclysmic-variable-starsnarrow-band-photometryatomic-spectroscopyaccretionspectroscopyWe present the discovery of TUVO-21acq, a new transient which we detected in the UV using data from the UVOT aboard Swift. We detected two separate outbursts and used the UVOT data to constrain source properties, focusing on the amplitudes and timescales of the outbursts. To further characterise the source, we obtained an optical spectrum during quiescence with the Southern African Large Telescope (SALT; Buckley et al., 2006). The spectrum exhibited hydrogen Balmer series and helium emission lines, and a flat overall spectral shape. We confirm the nature of the source as an accreting white dwarf which underwent DN outburst based on photometric and spectroscopic properties.2022A&A...664A.165Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/664/A165CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/664/A165https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/664/A165http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/664/A165https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/664/A165https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/664/A165http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/664/A165GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/664/A165/list (Information on SALT spectrum)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/664/A165/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/664/A165/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/664/A165/list?GETtext/xml+votable180.050000true196.4363333-49.54952780.0055555555555555566/43233https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/664/A165?format=asciidefaultJ/A+A/664/A165/listInformation on SALT spectrumspShow the spectrummeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintblambdaLower value of wavelength interval0.1nmem.wlintBlambdaUpper value of wavelength interval0.1nmem.wlintdlambdaWavelength resolution0.1nmspect.resolutiondoublesizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar