J/AJ/158/48ivo://CDS.VizieR/J/AJ/158/48doi:10.26093/cds/vizier.51580048CDSTokovinin A.Mason B.D.Mendez R.A.Horch E.P.Briceno C.2019-09-17T14:07:07Z2019-09-17T14:42:02ZCDS support team

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

cds-question@unistra.frmultiple-starsorbitsinterferometryinfrared-photometryvisible-astronomyphotometrystellar-associationsThe results of speckle interferometric observations at the 4.1 m Southern Astrophysical Research Telescope (SOAR) in 2018 are given, totaling 3097 measurements of 2427 resolved pairs with separations from 11 mas to 5.9" (median 0.15", magnitude difference up to 7 mag) and nonresolutions of 624 targets. This work continues our long-term speckle program. Its main goal is to monitor orbital motion of close binaries, including members of high-order hierarchies and Hipparcos pairs in the solar neighborhood. Also, pre-main-sequence stars in the Orion OB1 association were surveyed, resolving 26 out of 118 targets. In addition, we report the discovery of 35 new companions among field visual multiples (some of which are likely optical) and first-time resolutions of another 31 pairs. By combining the measurements given here with the published ones, we computed 76 orbits for the first time and updated orbital elements of 34 visual binaries. Their periods range from 0.65 to 1100 yr, and their quality varies from first tentative solutions of grade 5 to accurate elements of grades 1 and 2. Finally, a list of 53 spurious pairs discovered by various techniques and unresolved at SOAR is given.2019AJ....158...48Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/158/48CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/239 : The Hipparcos and Tycho Catalogues (ESA 1997)B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2014)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/AJ/139/743 : Speckle interferometry in 2008-09 (Tokovinin+, 2010)J/AJ/143/42 : Speckle interferometry with SOAR in 2010 + 2011J/AJ/144/56 : Speckle interferometry at SOAR in 2012 (Tokovinin+, 2012)J/AJ/147/123 : Speckle interferometry with SOAR in 2012-2013 (Tokovinin+, 2014)J/AJ/150/50 : Speckle interferometry at SOAR in 2014 (Tokovinin+, 2015)J/AJ/151/153 : Speckle interferometry at SOAR in 2015 (Tokovinin+, 2016)J/AJ/152/138 : Orbits based on speckle interferometry at SOAR (Tokovinin, 2016)J/AJ/154/110 : Orbits based on SOAR speckle interferometry. II.J/AJ/155/235 : Speckle interferometry at SOAR in 2016 and 2017https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/158/48https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/158/48http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/158/48https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/158/48https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/158/48http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/158/48GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/158/48/table2 (Measurements of double stars at SOAR)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/158/48/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/158/48/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/158/48/table2?GETtext/xml+votable180.050000true0.200616.9890.005555555555555556Cone search capability for table J/AJ/158/48/table3 (Unresolved stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/158/48/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/158/48/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/158/48/table3?GETtext/xml+votable180.050000true0.0764-23.45270.005555555555555556Cone search capability for table J/AJ/158/48/table8 (Spurious pairs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/158/48/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/158/48/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/158/48/table8?GETtext/xml+votable180.050000true0.5829583-29.72044440.0055555555555555565/5715 5720 10745 6/7 9 28 38 42 49 59 65 81 112 114 144 177 188 206 233 238 246 262 275 288 292 312 321 326 336 340 359 368 377 408 411 419 439 500 598 612 647 654 725 781 851 1024 1060 1064 1074 1088 1103 1125 1178 4099 4104 4118 4122 4128 4129 4143 4158 4161 4184 4189 4206 4223 4228 4240 4241 4297 4316 4344 4358 4405 4427 4428 4465 4503 4566 4640 4670 4698 4699 4708 4730 4797 5170 6146 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49068 49113 49121 49122https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/158/48?format=asciiInfraredOpticaldefaultJ/AJ/158/48/table2Measurements of double stars at SOARSimbadNameSimbad column added by the CDSmeta.idcharONameOther namemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS identification (HHMMm+DDMM, J2000)meta.id;meta.maincharprimaryDiscDiscoverer codemeta.idcharCompComponents designationmeta.code.multipcharmoreindicates data in Tables 4-7 for this systemmeta.ref.urlcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainEpoch[2016.0423/2018.9756] Epoch of observation (expressed as a fractional Julian year)yrtime.epochdoubleFilt[VRIy] Filter usedinstr.setup;instr.filtercharNobs[1/7] Number of observation(s) usedmeta.numberintPA[0/359.7] Position angle {theta}degpos.posAngfloaterr[0/65.7] Internal error in tangential directionmasstat.errorfloatSep[0.0119/5.9253] Separation {rho}arcsecpos.angDistancefloate_Sep[0/65.7] The 1{sigma} uncertainty in Sepmasstat.errorfloatDm[-0.4/7.4] Magnitude difference of pair {Delta}mmagphot.mag;arith.difffloatf_Dm[*:q] Flag on Dm (1)meta.codechar(O-C)PA[-70.8/268.7]? The (O-C) in PAdegstat.fit.residualfloatnullable(O-C)Sep[-0.291/0.953]? The (O-C) in Separcsecstat.fit.residualfloatnullableRefOrbit reference code (see refs.dat file) (G1)pos.framecharJ/AJ/158/48/table3Unresolved starsSimbadNameSimbad column added by the CDSmeta.idcharDiscDiscoverer codemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS identification (HHMMm+DDMM, J2000)meta.id;meta.maincharCompComponents designationmeta.code.multipcharONameOther namemeta.idcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainEpoch[2016.0424/2018.9754] Epoch of observation (expressed as a fractional Julian year)yrtime.epochdoubleFilt[Iy] Filter usedinstr.setup;instr.filtercharNobs[1/8] Number of observation(s) usedmeta.numberintSepmin[0.028/0.129] Angular resolution {rho}_min_arcsecpos.angResolutionfloatDm0.15[0/5.41] The 5{sigma} magnitude difference at 0.15"magphot.mag;arith.difffloatDm1[0/6.58] The 5{sigma} magnitude difference at 1"magphot.mag;arith.difffloatJ/AJ/158/48/table4New pairs in Orion OB1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS identification (HHMMm+DDMM, J2000)meta.id;meta.maincharCVSO[7/2001] CVSO numbermeta.idintSep[0.086/3.72] Separation {rho}arcsecpos.angDistancefloatPA[32.1/328.6] Position angle {theta}degpos.posAngfloatDImag[0/4.6] Magnitude difference in the I band {Delta}Imagphot.mag;em.opt.IfloatConf[*] Indicates subsequent confirmation in 2017-2018meta.codecharJ/AJ/158/48/table5New visual multiple systemsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS identification (HHMMm+DDMM, J2000)meta.id;meta.maincharDiscDiscoverer codemeta.idcharCompOutComponents designation of the outer pairmeta.code.multipcharFlagOut[*] Indicates new subsystemmeta.code.errorcharSepOut[0.21/625] Outer separation {rho}_out_arcsecpos.angDistancefloatCompInComponents designation of the inner pairmeta.code.multipcharFlagIn[*] Indicates new subsystemmeta.code.errorcharSepIn[0.04/1.34] Inner separation {rho}_in_arcsecpos.angDistancefloatJ/AJ/158/48/table6New double starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS identification (HHMMm+DDMM, J2000)meta.id;meta.maincharONameOther namemeta.idcharSep[0.04/1.63] Separation {rho}arcsecpos.angDistancefloatDm[0/5.6] Magnitude difference {Delta}mmagphot.mag;arith.difffloatProgObserving program code (1)meta.codecharJ/AJ/158/48/table7Visual orbitsf_omega[f] f for fixedmeta.codecharf_i[f] f for fixedmeta.codecharGrade[1/5] Provisional grade of orbit (1 for accurate orbit)meta.codeintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS identification (HHMMm+DDMM, J2000)meta.id;meta.maincharDiscDiscoverer codemeta.idcharCompComponents designationmeta.code.multipcharHIP[4448/116384]? Hipparcos numbermeta.idintnullablePer[0.652/1100] Periodyrtime.perioddoublee_Per[0.001/57]? Uncertainty in Peryrstat.errorfloatnullablef_Per[f] f for fixedmeta.codecharT[1908.67/2092.6] Time of periastron passageyrsrc.orbital.periastrondoublee_T[0.021/9.3]? Uncertainty in Tyrstat.errorfloatnullablee[0/0.98] Eccentricitysrc.orbital.eccentricityfloate_e[0.003/0.159]? Uncertainty in estat.errorfloatnullablef_e[f] f for fixedmeta.codechara[0.0321/1.603] Semi-major axisarcsecphys.angSize.smajAxis;src.orbitalfloate_a[0.0006/0.067]? Uncertainty in aarcsecstat.errorfloatnullableOmega[0.1/345.4] Longitude of ascending node {Omega}degsrc.orbital.nodefloate_Omega[0.3/25]? Uncertainty in Omegadegstat.errorfloatnullableomega[-1.1/352.3] Argument of periastron {omega}degsrc.orbital.periastronfloate_omega[0.4/67.8]? Uncertainty in omegadegstat.errorfloatnullablei[0/192.3] Inclinationdegsrc.orbital.inclinationfloate_i[0.3/19.4]? Uncertainty in idegstat.errorfloatnullableRefReference to previous orbit (see refs.dat file) (G1)meta.ref;pos.framecharFlag[*] Indicates orbits where radial velocities from the literature are used jointly with position measuresmeta.code.errorcharJ/AJ/158/48/table8Spurious pairsSimbadNameSimbad column added by the CDSmeta.idcharDiscDiscoverer codemeta.idcharCompComponents designationmeta.code.multipcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS identification (HHMMm+DDMM, J2000)meta.id;meta.maincharSep[0.02/3] Separationarcsecpos.angDistancefloatTechMeasurement technique (1)meta.code;obscharYear1r[1897/2015]? First year when the pair was resolvedyrtime.epochintnullableYear2r[1927/2016]? Second year when the pair was resolvedyrtime.epochintnullableYear1nr[1976/2018]? First year of nonresolution at SOARyrtime.epochintnullableYear2nr[2017/2018]? Second year of nonresolution at SOARyrtime.epochintnullableNoteAdditional hint coded by letters (2)meta.notechar_RAPosition from the WDS catalog (Cat. B/wds) (right ascension part)degpos.eq.ra;meta.mainnullable_DEPosition from the WDS catalog (Cat. B/wds) (declination part)degpos.eq.dec;meta.mainnullableJ/AJ/158/48/refsList of referencesComCommentmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.note;meta.maincharprimaryAutAuthor's name(s)meta.bib.authorcharBibcodeBibcode of the referencemeta.bib.bibcodechar