J/AJ/155/247ivo://CDS.VizieR/J/AJ/155/247doi:10.26093/cds/vizier.51550247CDSHalpern J.P.Thorstensen J.R.Cho P.Collver G.Motsoaledi M.,Breytenbach H.Buckley D.A.H.Woudt P.A.2019-01-30T06:31:50Z2019-01-14T10:12:30ZCDS support team

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

cds-question@unistra.frcataclysmic-variable-starsvariable-starsx-ray-binary-starsradial-velocityWe conducted time-resolved optical spectroscopy and/or time-series photometry of 15 cataclysmic binaries that were discovered in hard X-ray surveys by the Swift Burst Alert Telescope and the International Gamma-Ray Astrophysics Laboratory, with the goal of measuring their orbital periods and searching for spin periods. Four of the objects in this study are new optical identifications: Swift J0535.2+2830, Swift J2006.4+3645, IGR J21095+4322, and Swift J2116.5+5336. Coherent pulsations are detected from three objects for the first time, Swift J0535.2+2830 (1523 s), 2PBC J1911.4+1412 (747 s), and 1SWXRT J230642.7+550817 (464 s), indicating that they are intermediate polars (IPs). We find two new eclipsing systems in time-series photometry: 2PBC J0658.0-1746, a polar with a period of 2.38 hr, and Swift J2116.5+5336, a disk system that has an eclipse period of 6.56 hr. Exact or approximate spectroscopic orbital periods are found for six additional targets. Of note is the long 4.637-day orbit for Swift J0623.9-0939, which is revealed by the radial velocities of the photospheric absorption lines of the secondary star. We also discover a 12.76 hr orbital period for RX J2015.6+3711, which confirms that the previously detected 2.00 hr X-ray period from this star is the spin period of an IP, as inferred by Coti Zelati et al. (2016MNRAS.456.1913C). These results support the conclusion that hard X-ray selection favors magnetic CVs, with IPs outnumbering polars.2018AJ....155..247Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/155/247CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/123 : Catalog of Cataclysmic Variables (Downes+ 2001-2006)I/284 : The USNO-B1.0 Catalog (Monet+ 2003)V/113 : Cataclysmic Binaries, LMXBs, and related objects (Ritter+, 2003)I/322 : UCAC4 Catalogue (Zacharias+, 2012)I/337 : Gaia DR1 (Gaia Collaboration, 2016)J/PASP/122/1285 : Radial-velocities of 20 cataclysmic var. (Thorstensen+, 2010)J/AJ/144/81 : Spectroscopy and photometry of CV candidatesJ/AJ/146/107 : Velocity curves of 10 cataclysmic binariesJ/AJ/149/128 : Radial velocities of 29 CVs (Thorstensen+, 2015)J/AJ/150/170 : Radial velocities of 7 cataclysmic binaries (Halpern+, 2015)J/AJ/152/226 : Radial velocities of 35 cataclysmic variableshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/155/247https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/155/247http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/155/247https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/155/247https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/155/247http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/155/247GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/155/247/table1 (Basic data on stars observed)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/155/247/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/155/247/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/155/247/table1?GETtext/xml+votable180.050000true83.74132528.477005560.0055555555555555566/13998 14187 14637 14641 15451 15459 15465 15669 20805 20847 21338 24462 30698 37087 39213https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/155/247?format=asciidefaultJ/AJ/155/247/table1Basic data on stars observedStarStar namemeta.id;meta.maincharVPVelocity Plotmeta.ref.urlcharVmag[14.1/19.7] Approximate V band magnitudemagphot.mag;em.opt.VfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSNameShort name used in Table 2meta.idcharRAJ2000Hour of Right Ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (1)pos.eq.dec;meta.mainr_Vmag[ABDS] Reference for Vmag (2)meta.ref;pos.framechargmag[14.7/20.1]? Average g magnitude from Pan-STARRSmagphot.mag;em.opt.BfloatnullableDataType(s) of data (3)meta.notecharClassClassification (4)meta.code.classcharl_Porb[~] Limit flag on Porbmeta.code.errorcharPorb[0.099137/4.637]? Orbital perioddtime.perioddoublenullableu_Porb[: ] Uncertainty flag on Porbmeta.code.errorchare_Porb[3e-07/0.019]? Uncertainty in Porbdstat.errordoublenullablePspin[464.452/7196]? Spin periodstime.perioddoublenullablee_Pspin[0.001/11]? Uncertainty in Pspinsstat.errorfloatnullablen_Pspin[P] Denotes a Pspin equal to the Porbmeta.notecharRefReference(s) for periods (5)meta.notecharNrv[23/63]? Number of RV data in Table 2meta.numberintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/155/247/table2Radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarAbbreviated star namemeta.id;meta.maincharBJD[54281.8863/58077.728] Barycentric Julian Date of mid-integration (BJD-2400000.0, UTC)dtime.epochdoubleRVHa[-175/208]? H{alpha} radial velocitykm/sspect.dopplerVelocintnullablee_RVHa[1/45]? Uncertainty in RVHakm/sstat.errorintnullableRVabs[-236/179]? Absorption-line radial velocity (1)km/sspect.dopplerVelocintnullablee_RVabs[9/43]? Uncertainty in RVabskm/sstat.errorintnullable