J/MNRAS/518/2068ivo://CDS.VizieR/J/MNRAS/518/2068doi:10.26093/cds/vizier.75182068CDSGajdos P.Vanko M.2024-11-06T20:34:38Z2022-11-30T15:22:52ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsastronomical-modelsHere we present an initial look at the dynamics and stability of 178 multiplanetary systems which are already confirmed and listed in the NASA Exoplanet Archive. To distinguish between the chaotic and regular nature of a system, the value of the MEGNO indicator for each system was determined. Almost three-quarters of them could be labelled as long-term stable. Only 45 studied systems show chaotic behaviour. We consequently investigated the effects of the number of planets and their parameters on the system stability. A comparison of results obtained using the MEGNO indicator and machine-learning algorithm SPOCK suggests that the SPOCK could be used as an effective tool for reviewing the stability of multiplanetary systems. A similar study was already published by Laskar and Petit. We compared their analysis based on the AMD criterion with our results. The possible discrepancies are discussed.2023MNRAS.518.2068Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/518/2068CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/605/A72 : Planetary systems AMD-stability (Laskar+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/518/2068https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/518/2068http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/518/2068https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/518/2068https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/518/2068http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/518/2068GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/518/2068/table1 (Chaos indicator MEGNO and Lyapunov time as a result of the simulation of individual systems and probability of stability based on SPOCK classifier)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/518/2068/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/518/2068/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/518/2068/table1?GETtext/xml+votable180.050000true155.8682075-0.90224810.0055555555555555566/250 431 546 748 2152 4136 4321 4441 4698 5420 5488 5522 5572 6237 7208 7487 8357 9483 9651 9934 10079 10701 11035 11589 11636 11923 12306 13143 14278 14548 14584 14591 14734-14735 14750-14751 14753 14757 14762 14768 14774 14779 14794 14824-14826 14923-14924 14929-14930 14932-14933 14935-14937 14959 14966 14971 15060 15104 15107 15109-15110 15118 15121 15127 15134 15137 15141 15145-15146 15149 15155 15158 15169-15172 15174 15792 16472 16847 17149 18028 18147 18350 18496 18726 18785-18786 18821 18881 19904 20338 20557 20593 20667 20746 20973 21121 21221 21223 21473 22065 22078 22169 22351 23681 24178 24587 25424 25427 26183 26278 26555 26790 26977 27018 27060 27085 27220 27358 27682 28130 28571 28763 29541 29589 29838 30526 31689 32433 32986 33145 33210 33212 33386 33608 33923 33972 34448 36015 36506 38975 39280 39646 39807 39926 40442 40513 40692 41432 41752 41941 42044 42248 42318 42986 43203 43631 43840 44243 44317 44431 44474 44518 44921 45717 46215 48274https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/518/2068?format=asciidefaultJ/MNRAS/518/2068/table1Chaos indicator MEGNO and Lyapunov time as a result of the simulation of individual systems and probability of stability based on SPOCK classifierSimbadNameSimbad column added by the CDSmeta.idcharnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the systemmeta.id;meta.maincharNplNumber of planetsmeta.numberintMEGNOValue of MEGNO indicatorstat.fit.paramdoubleLyaTimeLyapunov time in yearsyrtime.epochdoubleLyaTime-PLyapunov time in orbital periodstime.epochdoubleSPOCK[0/1]? SPOCK probabilitystat.fit.goodnessdoublenullable