J/AJ/147/104ivo://CDS.VizieR/J/AJ/147/104doi:10.26093/cds/vizier.51470104CDSKoo J.-R.Lee J.W.Lee B.-C.Kim S.-L.Lee C.-U.Hong K.Lee D.-J.,Rey S.-C.2017-06-21T08:22:04Z2014-09-15T13:32:55ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsradial-velocityvisible-astronomybroad-band-photometryAmong quadruples or higher multiplicity stars, only a few doubly eclipsing binary systems have been discovered. They are important targets for understanding the formation and evolution of multiple stellar systems because we can obtain accurate stellar parameters from photometric and spectroscopic studies. We present the observational results of this kind of rare object, 1SWASP J093010.78+533859.5, for which the doubly eclipsing feature had been detected previously from the SuperWASP photometric archive. Individual point-spread function photometry for two objects with a separation of about 1.9" was performed for the first time in this study. Our time-series photometric data confirms the finding of Lohr et al. that the bright object A is an Algol-type detached eclipsing binary and the fainter B is a W UMa-type contact eclipsing. Using high-resolution optical spectra, we obtained well-defined radial velocity variations of system A. Furthermore, stationary spectral lines were detected that must have originated from a further, previously unrecognized stellar component. It was confirmed by the third object contribution from the light-curve analysis. No spectral feature of system B was detected, probably due to motion blur by long exposure times. We obtained the binary parameters and the absolute dimensions of systems A and B from light-curve synthesis with and without radial velocities, respectively. The primary and secondary components of system A have a spectral type of K1 and K5 main sequences, respectively. Two components of system B have nearly the same type of K3 main sequence. Light variations for both binaries are satisfactorily modeled by using two-spot models with one starspot on each component. We estimated the distances to systems A and B individually. Two systems may have similar distances of about 70 pc and seem to be gravitationally bound with a separation of about 130 AU. In conclusion, we suggest that 1SWASP J093010.78+533859.5 is a quintuple stellar system with a hierarchical structure of a triple system A(ab)c and a binary system B(ab).2014AJ....147..104Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/147/104CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)I/276 : Tycho Double Star Catalogue (TDSC) (Fabricius+ 2002)I/259 : The Tycho-2 Catalogue (Hog+ 2000)J/A+A/549/A86 : Period change for SuperWASP eclipsing binaries (Lohr+, 2013)J/AJ/145/16 : Differential BVRI light curves of NSVS 02502726 (Lee+, 2013)J/AJ/143/95 : Transit light curves of HAT-P-12 (Lee+, 2012)J/A+A/546/A5 : eps CrB radial velocity curve (Lee+, 2012)J/A+AS/124/75 : Multiple star catalogue (MSC) (Tokovinin 1997-1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/147/104https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/147/104http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/147/104https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/147/104https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/147/104http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/147/104GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/147/104/binaries (Positions and periods of J093010A and B)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/147/104/binaries?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/147/104/binaries?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/147/104/binaries?GETtext/xml+votable180.050000true142.544791753.64994440.0055555555555555566/7247https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/147/104?format=asciiOpticaldefaultJ/AJ/147/104/binariesPositions and periods of J093010A and BrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSystemName of the doubly eclipsing multiple systemmeta.id.parentcharCompComponent designation (A or B)meta.code.multipcharNameName of the eclipsing binarymeta.id;meta.maincharRAJ2000Hour of Right Ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (1)pos.eq.dec;meta.mainPerPerioddtime.periodfloatTDSCDetails from the TDSC for this componentmeta.ref.urlcharTyc2Details from Tycho-2 catalog (Hog et al., 2000, cat. I/259)meta.ref.urlcharLVCPlot of loght or velocity curvemeta.ref.urlcharLCShow the light curvesmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/147/104/table2CCD photometric data of J093010A and BFltFilter used (B or V)instr.setup;instr.filtercharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCompComponent designation (A or B)meta.code.multipcharHJDHeliocentric Julian Date (HJD-2456000)dtime.epochdoubleDmagDifferential magnitude in Fltmagphot.mag;arith.difffloate_DmagUncertainty in Dmagmagstat.error;phot.mag;arith.difffloatJ/AJ/147/104/table5Radial velocities for J093010ArecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date (HJD-2456000)dtime.epochdoubleRV1Primary radial velocity ("a" component)km/sspect.dopplerVelocfloate_RV1Uncertainty in RV1km/sstat.errorfloatRV2? Secondary radial velocity ("b" component)km/sspect.dopplerVelocfloatnullablee_RV2? Uncertainty in RV2km/sstat.errorfloatnullableRV3Tertiary radial velocity ("c" component)km/sspect.dopplerVelocfloate_RV3Uncertainty in RV3km/sstat.errorfloat