J/AJ/155/160ivo://CDS.VizieR/J/AJ/155/160doi:10.26093/cds/vizier.51550160CDSTokovinin A.2019-01-07T08:48:33Z2018-11-20T14:26:46ZCDS support team

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

cds-question@unistra.frmultiple-starsstellar-massesstellar-spectral-typesvisible-astronomytrigonometric-parallaxThis paper draws attention to the class of resolved triple stars with moderate ratios of inner and outer periods (possibly in a mean motion resonance) and nearly circular, mutually aligned orbits. Moreover, stars in the inner pair are twins with almost identical masses, while the mass sum of the inner pair is comparable to the mass of the outer component. Such systems could be formed either sequentially (inside-out) by disk fragmentation with subsequent accretion and migration, or by a cascade hierarchical fragmentation of a rotating cloud. Orbits of the outer and inner subsystems are computed or updated in four such hierarchies: LHS 1070 (GJ 2005, periods 77.6 and 17.25 years), HIP 9497 (80 and 14.4 years), HIP 25240 (1200 and 47.0 years), and HIP 78842 (131 and 10.5 years).2018AJ....155..160Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/155/160CatalogResearchIsServedByTAP 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/337 : Gaia DR1 (Gaia Collaboration, 2016)J/A+AS/121/71 : Orbits of 7 spectroscopic binaries in multiplesJ/PAZh/26/301 : Dynamical stability of triple stars (Orlov+, 2000)J/A+A/384/1030 : Orientation of orbits in triple stars (Sterzik+, 2002)J/MNRAS/389/925 : Triple and quadruple stars (Tokovinin, 2008)J/AJ/139/743 : Speckle interferometry in 2008-09 (Tokovinin+, 2010)J/A+A/545/A85 : LHS1070 photometry and spectroscopy (Rajpurohit+, 2012)J/AJ/151/153 : Speckle interferometry at SOAR in 2015 (Tokovinin+, 2016)J/ApJ/838/54 : Accurate astrometry & RVs of 4 multiple systemsJ/ApJ/844/103 : Orbit alignment in triple stars (Tokovinin, 2017)J/ApJS/235/6 : Updated Multiple Star Catalog (MSC) - May 2018https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/155/160https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/155/160http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/155/160https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/155/160https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/155/160http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/155/160GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/155/160/table1 (Overview of multiple systems)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/155/160/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/155/160/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/155/160/table1?GETtext/xml+votable180.050000true6.184125-27.14005560.0055555555555555566/16502 22882 36396 42889https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/155/160?format=asciiOpticaldefaultJ/AJ/155/160/table3Relative positions and residualsSep[0.083/3.3117] Separationarcsecpos.angDistancefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDSWDS designation (HHMMm+DDMM, J2000)meta.id;meta.maincharm_WDSSubsystem designation (1)meta.code.multipcharDate[1863.21/2017.9338] Date of observationyrtime.epochdoublePA[0.4/359.0] Position angledegpos.posAngfloate_Sep[0.002/2.15] Assumed error on Separcsecstat.errorfloat(O-C)PA[-8.1/11.3] Residual in PAdegstat.fit.residualfloat(O-C)Sep[-0.2715/0.3096] Residual in Separcsecstat.fit.residualfloatRefReference (2)meta.ref;pos.framecharJ/AJ/155/160/table1Overview of multiple systemsSimbadNameSimbad column added by the CDSmeta.idcharHIP? Hipparcos number (NNNNN)meta.idintnullableWDSWDS designation (HHMMm+DDMM, J2000)meta.id;meta.maincharprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintmoreindicates data in Table 3 for this objectmeta.ref.urlcharRAJ2000Simbad Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Simbad Degree of Declination (J2000)pos.eq.dec;meta.mainVmagCombined visual magnitudemagphot.mag;em.opt.VfloatName(O)Outer pair discoverer name (Cat. B/wds)meta.idcharPer(O)Orbital period of the outer pairyrtime.periodfloata(O)Semimajor axis of the outer pairarcsecphys.angSize;srcfloatM1(O)Mass of the primary component of the outer pairsolMassphys.massfloatn_M1(O)[s] Note on M1(O) (s=Mass sum)meta.notecharM2(O)Mass of the secondary component of the outer pairsolMassphys.massfloatn_M2(O)[s] Note on M2(O) (s=Mass sum)meta.notecharPhi1First value of mutual inclination {Phi}degsrc.orbital.inclinationintPhi2Second value of mutual inclination {Phi}degsrc.orbital.inclinationintPlxTrigonometric parallaxmaspos.parallax.trigfloatSpTypeMK spectral type from Simbadsrc.spTypecharName(I)Inner pair discoverer name (Cat. B/wds)meta.idcharPer(I)Orbital period of the inner pairyrtime.periodfloata(I)Semimajor axis of the inner pairarcsecphys.angSize;srcfloatM1(I)Mass of the primary component of the inner pairsolMassphys.massfloatM2(I)Mass of the secondary component of the inner pairsolMassphys.massfloatl_PO/PI[~] Limit flag on PO/PImeta.code.errorcharPO/PIRatio of outer and inner periods Per(O)/Per(I)time.periodfloate_PO/PI? Uncertainty in PO/PIstat.errorfloatnullable