J/MNRAS/456/2070ivo://CDS.VizieR/J/MNRAS/456/2070doi:10.26093/cds/vizier.74562070CDSTokovinin A.Kiyaeva O.2024-08-15T20:17:21Z2017-06-26T06:42:29ZCDS support team

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

cds-question@unistra.frmultiple-starsA sample of 477 solar-type binaries within 67pc with projected separations larger than 50AU is studied by a new statistical method. Speed and direction of the relative motion are determined from the short observed arcs or known orbits, and their joint distribution is compared to the numerical simulations. By inverting the observed distribution with the help of simulations, we find that average eccentricity of wide binaries is 0.59+/-0.02 and the eccentricity distribution can be modelled as f(e)~1.2e+0.4. However, wide binaries containing inner subsystems, i.e. triple or higher order multiples, have significantly smaller eccentricities with the average e=0.52+/-0.05 and the peak at e~0.5. We find that the catalogue of visual orbits is strongly biased against large eccentricities. A marginal evidence of eccentricity increasing with separation (or period) is found for this sample. Comparison with spectroscopic binaries proves the reality of the controversial period-eccentricity relation. The average eccentricity does increase with binary period, being 0.39 for periods from 10^2^ to 10^3^d and 0.59 for the binaries studied here (10^5^-10^6^d).2016MNRAS.456.2070Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/456/2070CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2014)I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/456/2070https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/456/2070http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/456/2070https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/456/2070https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/456/2070http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/456/2070GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/456/2070/table2 (Wide binaries within 67pc)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/456/2070/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/456/2070/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/456/2070/table2?GETtext/xml+votable180.050000true0.1430847-53.09771360.0055555555555555566/75 320 464 548 601 719 750 765 840 900 989 1001 1077 1227 1247 1288 1381 1412 1415 1550 1590 1603 1613 1642 1698 1762 1904 2027 2042 2348 2535 2747 3020 3060 3118 3199 3280 3363 3370 3500 3551 3644 3678 3757 3864 3888 3914 3920 4164 4227 4336 4344 4540 4591 4597 4640 4734 4808 5091 5108 5154 5166 5172 5304 5378 5498 5533 5680 5689 5833 5907 5924 5929 5985 5994 6003 6066 6147 6278 6313 6408 6410 6607 6979 7063 7176 7187 7238 7595 7604 7645 7665 7925 7946 8297 8342 8345 8366 8429 8496 8584 8614 8711 8788 8843 8896 9032 9294 9430 9442 9503 9857 9881 10004 10090 10480 10485 10517 10570 10697 10747 10771 10786 10945 10954 11011 11075 11118 11274 11309 11403 11436 11500 11709 11888 12046 12062 12120 12228 12303 12405 12526 12592 12637 12702 12704 12798 12856 12899 13075 13161 13177 13214 13257 13297 13311 13383 13663 13752 13802 13931 14144 14393 14456 14459 14850 14908 15093 15102 15144 15147 15154 15174 15330 15522 15590 15760 15799 16170 16302 16338 16692 16715 16862 16930 17083 17301 17409 17441 17462 17494 17504 17563 17588 17590 17721 17730 17734 17752 17783 17890 17929 17955 17996 18127 18326 18345 18379 18441 18463 18647 18749 19029 19113 19237 19320 19323 19389 19401 19462 19658 19663 19703 19778 20005 20043 20078 20103 20310 20378 20428 20476 20479 20637 20691 20701 20998 21013 21047 21056 21060 21076 21228 21477 21519 21577 21696 21753 21792 21829 21905 21987 22010 22043 22263 22380 22419 22479 22518 22537 22679 22777 22882 23017 23095 23137 23191 23201 23213 23284 23319 23342 23527 23536 23575 23636 23738 23826 24102 24167 24587 24628 24743 24778 24790 24951 24971 24989 25139 25192 25360 25397 25409 25466 25575 25713 25860 25930 26024 26081 26091 26148 26468 26563 26610 26669 26774 26926 27082 27268 27422 27456 27623 27676 27712 27875 27879 27973 27975 28019 28101 28179-28180 28186 28198 28258 28484 28510 28582 28655 28696 28943 28947 28968 29001 29082 29291 29472 29479 29554 29633 29636 29640 29653 29800 30001 30123 30167 30325 30383 30484 30550 30576 30716 30859 30915 30962 31029 31133 31328 31416 31433 31621 31640 31720 31760 31813 31998 32058 32244 32380 32520 32585 32645 32815 32930 33252 33273 33340-33341 33442 33498 33552 33849 33922 33930 33937 33943 33945 34011 34058 34079 34258 34295 34331 34376 34464 34480 34519 34691 34740 34883 34889 34896 34904 35128 35260 35291 35330 35351 35361-35362 35398 35434 35564 35796 35808 35872 35948 36009 36069 36072 36274 36396 36748 36755 36834 36889 37074 37207 37305 37319 37337 37573 37595 37714 37902 37969 38047 38065 38191 38198 38356 38421 38434 38500 38675 38724 38855 38864 38985 39023 39025 39464 39487 39500 39562 39569 39668 39709 39730 39744 39808 39921 40146 40199 40271 40386 40713 40869 41429 41446 41941 42024 42034 42053 42093 42216 42285 42342 42344 42420 42615 42666 42700 42780 42903 43023 43062 43101 43277 43398 43498 43797 43803 43851-43852 43856 43911 44010 44078 44113 44127 44150 44228 44258 44436 44494 44639 44753 44887 44917 44920 44999 45029 45062 45165 45175 45272 45382 45549 45602 45678 45799 45874 45927 45929 45934 45988 46024 46028 46080 46203 46245 46247 46300 46320 46327 46482 46488 46510 46744 47054 47107 47188 47235 47245 47377 47381 47463 47568 47606 47689 47754 47777 47791 47907 48015 48176 48249 48283 48405 48579 48846 48915 48923 49060 49089 49121https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/456/2070?format=asciidefaultJ/MNRAS/456/2070/table2Wide binaries within 67pcrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHipparcos number of primary componentmeta.idintprimaryLMPsindicates LMPS in table3meta.ref.urlcharWDSWDS J2000 codemeta.id;meta.maincharDiscDiscoverer code and components 1obs.observercharPlxHipparcos-2 parallaxmaspos.parallaxfloatSepProjected separationAUpos.angDistancefloatM1Mass of the primary componentsolMassphys.massfloatM2Mass of the secondary componentsolMassphys.massfloatmu*Characteristic speed of relative motionmas/yrphys.veloc;arith.difffloatType[CLOM ] Type of motionmeta.codecharTag[MEme] Sample tagsrc.samplecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition of primary (right ascension part)degpos.eq.ra;meta.main_DEPosition of primary (declination part)degpos.eq.dec;meta.mainJ/MNRAS/456/2070/table3LMPs of binariesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHipparcos number of primary componentmeta.numberintType[LCO] Type of motion from Table 2meta.codechart0Reference epoch (1)yrmeta.ref;time.epochfloattheta0Position angle at moment t0degpos.posAngfloate_theta0? rms uncertainty on theta0 (1)degstat.errorfloatnullabletheta1Speed of angular motiondeg/yrpos.pm;phys.veloc.angfloate_theta1? rms uncertainty on theta1 (1)deg/yrstat.errorfloatnullablerho0Separation at moment t0arcsecpos.angDistance;src.orbitalfloate_rho0? rms uncertainty on rho0 (1)arcsecstat.errorfloatnullablerho1Speed of radial motionarcsec/yrpos.angDistance;src.orbitalfloate_rho1? rms uncertainty on rho1 (1)arcsec/yrstat.errorfloatnullablemuSpeed of relative motionmas/yrphys.veloc;src.orbital.meanMotionfloate_mu? rms uncertainty on mu (1)mas/yrstat.errorfloatnullablegammaAngle of relative motion w.r.t. radiusdegpos.posAngfloate_gamma? rms uncertainty on gamma (1)degstat.errorfloatnullablemu1Normalized relative motion (1)phys.veloc;arith.difffloatDeltaT? Time span (1)yrtime.intervalfloatnullableresgamma? rms residual in angle (1)degstat.fit.residual;pos.posAngfloatnullableresrho? rms residual in separation (1)arcsecstat.fit.residual;pos.angDistancefloatnullable