J/AJ/158/185ivo://CDS.VizieR/J/AJ/158/185doi:10.26093/cds/vizier.51580185CDSHong K.Lee J.W.Kim S.-L.Koo J.-R.Park J.-H.Kim C.-H.Lee C.-U.,Kim H.-W.Kim D.-J.Han C.2020-01-14T11:47:18Z2020-01-14T09:43:57ZCDS support team

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

cds-question@unistra.frmagellanic-cloudseclipsing-binary-starsinfrared-photometryvisible-astronomyphotometryradial-velocityWe present the physical properties and apsidal motion elements of three eccentric eclipsing binaries in the Large Magellanic Cloud. The time-series photometric observations were carried out for a total of 41 nights between 2018 November and 2019 February using the KMTNet 1.6 m telescopes installed in South Africa and Australia. The radial velocities of binary components were measured using about 15 spectra per system collected from the ESO Science Archive Facility, which were observed with the Very Large Telescope 8.2 m telescope. The effective temperatures of the more massive binary components were determined to be 19000+/-500 K for OGLE-LMC-ECL-05797, 17000+/-500 K for OGLE-LMC-ECL-05861, and 19000+/-500 K for OGLE-LMC-ECL-06510 by comparing the observed spectra and the stellar atmosphere models obtained from the BOSZ spectral library. The absolute dimensions of each system were derived by analyzing the radial velocity curves together with the light curves obtained from the KMTNet, OGLE, and MACHO observations during about three decades. For the apsidal motion study, new eclipse timings were derived from the KMTNet and survey photometry. The apsidal motion elements of the three binaries were determined from both light curve and eclipse timing analysis. The periods of apsidal motion were 67+/-2 yr for OGLE-LMC-ECL-05797, 124+/-6 yr for OGLE-LMC-ECL-05861, and 39+/-1 yr for OGLE-LMC-ECL-06510 and their internal structure constants (ISCs) were log k_2,obs_=-2.3+/-0.1, -2.4+/-0.1, and -2.1+/-0.1 in the same order. The observed ISCs of OGLE-LMC-ECL-05797 and OGLE-LMC-ECL-05861 showed a good match to the theoretical ISC values, while the value of OGLE- LMC-ECL-06510 was somewhat larger than the theoretical one.2019AJ....158..185Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/158/185CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/247 : Variable Stars in the Large Magellanic Clouds (MACHO, 2001)J/AcA/53/1 : OGLE eclipsing binaries in LMC (Wyrzykowski+, 2003)J/AJ/134/1963 : MACHO r,b light curves of MC eclipsing binariesJ/ApJ/663/249 : LMC eclipsing binaries in the MACHO database (Derekas+, 2007)J/AcA/61/103 : VI light curves of LMC eclipsing binaries (Graczyk+, 2011)J/AcA/66/421 : Eclipsing binaries in the Magellanic System (Pawlak+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/158/185https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/158/185http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/158/185https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/158/185https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/158/185http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/158/185GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/158/185/table1 (Basic parameters of three binary systems)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/158/185/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/158/185/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/158/185/table1?GETtext/xml+votable180.050000true75.6940833-69.08280560.0055555555555555566/33077 33120https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/158/185?format=asciiOpticalInfrareddefaultJ/AJ/158/185/table1Basic parameters of three binary systemsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOGLEIIIOGLE-III&IV identifier (OGLE LMC-ECL-NNNNN in Simbad)meta.id;meta.maincharprimaryOGLEIIOGLE-II identifier (OGLE LMC-SCNN NNNNNN in Simbad)meta.idcharMACHOMACHO identifier (MACHO FFF.NNNNN.NNNN in Simbad)meta.idcharmoreindicates eclipse timings in Table 8 for the binary systemmeta.ref.urlcharRAJ2000Hour of Right Ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (1)pos.eq.dec;meta.mainVmag[16.806/17.306] V band magnitude (1)magphot.mag;em.opt.Vfloate_Vmag[0.005/0.006] Uncertainty in Vmag (1)magstat.error;phot.mag;em.opt.VfloatV-I[-0.07/0.058] V-I color index (1)magphot.color;em.opt.V;em.opt.IfloatLCsDisplay VI photometric observations for the eclipsing binarymeta.ref.urlcharRVsRadial velocities from Table 5meta.ref.urlcharJ/AJ/158/185/table2VI photometric observations for the eclipsing binary LMC5797recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD-V? Heliocentric Julian Date of V band observationdtime.epochdoublenullableVmag[16.771/17.622]? The V band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag[0.005/0.165]? The one {sigma} error in Vmagmagstat.error;phot.mag;em.opt.VfloatnullableHJD-I? Heliocentric Julian Date of I band observationdtime.epochdoublenullableImag[16.839/17.66]? The I band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag[0.006/0.135]? The one {sigma} error in Imagmagstat.error;phot.mag;em.opt.IfloatnullableJ/AJ/158/185/table3VI photometric observations for the eclipsing binary LMC5861recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD-V? Heliocentric Julian Date of V band observationdtime.epochdoublenullableVmag[16.771/17.622]? The V band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag[0.005/0.165]? The one {sigma} error in Vmagmagstat.error;phot.mag;em.opt.VfloatnullableHJD-I? Heliocentric Julian Date of I band observationdtime.epochdoublenullableImag[16.839/17.66]? The I band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag[0.006/0.135]? The one {sigma} error in Imagmagstat.error;phot.mag;em.opt.IfloatnullableJ/AJ/158/185/table4VI photometric observations for the eclipsing binary LMC6510recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD-V? Heliocentric Julian Date of V band observationdtime.epochdoublenullableVmag[16.771/17.622]? The V band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag[0.005/0.165]? The one {sigma} error in Vmagmagstat.error;phot.mag;em.opt.VfloatnullableHJD-I? Heliocentric Julian Date of I band observationdtime.epochdoublenullableImag[16.839/17.66]? The I band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag[0.006/0.135]? The one {sigma} error in Imagmagstat.error;phot.mag;em.opt.IfloatnullableJ/AJ/158/185/table5RVs of the three eccentric eclipsing binaries (EEBs)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[59.6723/66.8416] Heliocentric Julian Date, HJD-2452900dtime.epochfloatRV1(5797)[142/441] Primary radial velocity for LMC5797km/sphys.veloc;pos.heliocentricinte_RV1(5797)[8/26] Uncertainty in RV1(5797)km/sstat.errorintRV2(5797)[91/459]? Secondary radial velocity for LMC5797km/sphys.veloc;pos.heliocentricintnullablee_RV2(5797)[12/28]? Uncertainty in RV2(5797)km/sstat.errorintnullableRV1(5861)[97/376] Primary radial velocity for LMC5861km/sphys.veloc;pos.heliocentricinte_RV1(5861)[7/36] Uncertainty in RV1(5861)km/sstat.errorintRV2(5861)[93/405]? Secondary radial velocity for LMC6861km/sphys.veloc;pos.heliocentricintnullablee_RV2(5861)[10/37]? Uncertainty in RV2(5861)km/sstat.errorintnullableRV1(6510)[165/402]? Primary radial velocity for LMC6510km/sphys.veloc;pos.heliocentricintnullablee_RV1(6510)[16/33]? Uncertainty in RV1(6510)km/sstat.errorintnullableRV2(6510)[109/487]? Secondary radial velocity for LMC6510km/sphys.veloc;pos.heliocentricintnullablee_RV2(6510)[18/34]? Uncertainty in RV2(6510)km/sstat.errorintnullableJ/AJ/158/185/table8List of eclipse timings of three binary systemsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOGLEIIIOGLE-III&IV identifier (OGLE LMC-ECL-NNNNN in Simbad)meta.id;meta.maincharHJD[49005.6/58476.4] Heliocentric Julian Date, HJD-2400000dtime.epochdoublee_HJD[0.0012/0.028] Uncertainty in HJDdstat.error;time.epochfloatCycle[-1751/2959.5] Cycle numbermeta.idfloatMin[I II] Primary (I) or secondary (II) minimummeta.codecharSourceSource of observationmeta.id;instrchar