J/ApJ/709/168ivo://CDS.VizieR/J/ApJ/709/168doi:10.26093/cds/vizier.17090168CDSAnglada-Escude G.Lopez-Morales M.Chambers J.E.2017-12-07T07:27:51Z2012-03-29T09:34:04ZCDS support team

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

cds-question@unistra.frsolar-system-planetsorbitsmultiple-starsThe Doppler technique measures the reflex radial motion of a star induced by the presence of companions and is the most successful method to detect exoplanets. If several planets are present, their signals will appear combined in the radial motion of the star, leading to potential misinterpretations of the data. Specifically, two planets in 2:1 resonant orbits can mimic the signal of a single planet in an eccentric orbit. We quantify the implications of this statistical degeneracy for a representative sample of the reported single exoplanets with available data sets, finding that (1) around 35% of the published eccentric one-planet solutions are statistically indistinguishable from planetary systems in 2:1 orbital resonance, (2) another 40% cannot be statistically distinguished from a circular orbital solution, and (3) planets with masses comparable to Earth could be hidden in known orbital solutions of eccentric super-Earths and Neptune mass planets.2010ApJ...709..168Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/709/168CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/eso : ESO Science Archive Catalog (ESO, 2012)J/MNRAS/414/1278 : Eccentricities of transiting planets (Pont+, 2011)J/ApJS/182/97 : Radial velocities of multi-planet systems (Wittenmyer+,J/A+A/485/871 : Transiting planet HD 17156b (Gillon+, 2008)J/A+A/426/695 : Radial velocities of HD 41004A/B (Zucker+, 2004)http://exoplanet.eu/ : The extrasolar planets encyclopaediahttp://oklo.org/ : Systemic project web page maintained by G. Laughlinhttp://exoplanetarchive.ipac.caltech.edu/ : NASA Exoplanet archive (NStEDhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/709/168https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/709/168http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/709/168https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/709/168https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/709/168http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/709/168GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/709/168/table3 (Statistical comparison of circular, resonant, and eccentric orbital solutions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/709/168/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/709/168/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/709/168/table3?GETtext/xml+votable180.050000true97.696283358.16263360.005555555555555556Cone search capability for table J/ApJ/709/168/table2 (List of eccentric planets and the amplitudes of their correspondent eccentric harmonics)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/709/168/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/709/168/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/709/168/table2?GETtext/xml+votable180.050000true229.8617708-7.72228030.0055555555555555566/311 341 431 679 748 871 1597 2110 2312 2416 2472 3118 3344 3876 3932 3979 4136 4429 4528 4762 5009 5067 5522 5718 5815 6219 6760 6791 6821 6831 7136 7240 7746 7760 8357 8825 8843 9403 9459 9483 9662 9753 9811 9843 11087 11326 11352 11473 12030 12146 12465 12482 12612 12644 12899 12983 13569 13643 13702 14412 14416 14419 14434 14466 14525 14548 14825 14896 15174 15273 16035 16213 16627 16652 16823 16947 17341 17496 17730 17731 17954 18028 18496 18614 18666 18821 19904 19912 20145 20557 20746 21003 21531 21838 21906 21956 22036 22252 22590 22878 23013 23201 23646 23681 24019 24178 24227 24409 25939 26183 26242 26575 26706 26707 26901 26978 26997 27018 27088 27164 27616 27750 27881 27975 28130 28548 28763 29291 29513 29541 30015 30170 30419 30526 30541 30707 31374 31494 31813 31821 31860 32561 32848 32930 33243 33258 33377 33456 33630 33717 33923 34069 34905 34951 35079 35317 35362 35442 35532 35907 35954 35968 36506 36697 36956 37018 37461 37573 37954 37955 38545 38728 39257 39280 39364 39446 39591 39646 39675 39926 40066 40101 40442 40513 40692 40985 41167 41446 41607 41724 42044 42248 42290 42318 42333 42386 42510 42570 42760 42934 43012 43022 43228 43677 43813 43818 43893 43911 44243 44398 44740 44921 45168 45364 45717 45865 46111 46297 46306 46632 46800 46843 46967 47550 47590 48105 48545https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/709/168?format=asciidefaultJ/ApJ/709/168/table3Statistical comparison of circular, resonant, and eccentric orbital solutionsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_NameNumber of planets described in table2intnullableNameStar namemeta.id;meta.mainf_Name[c] Individual notes (1)meta.codecharchi.c({chi}^2^)^0.5^ of circular orbital solutionstat.fit.chi2floatchi.r({chi}^2^)^0.5^ of resonant orbital solutionstat.fit.chi2floatchi.e({chi}^2^)^0.5^ of eccentric orbital solutionstat.fit.chi2floatConfConfidence level (2)%stat.fit.goodnessfloatNobsNumber of observationsmeta.numberintl_Nreq[+] Limit flag on Nreqmeta.code.errorcharNreq? Estimated number of required observations to detect the second harmonic (3)meta.numberintnullablef_Nreq[ab] Flag on Nreq (1)meta.codecharPrefPreferred solution (Circular, Eccentric or Resonant)meta.id;stat.fitcharu_FAP[~] Uncertainty flag on FAPmeta.code.errorcharFAP? False alarm probability (FAP) of the favored solution%statfloatnullableQual[U* ] Significance of the solution (4)stat.fit.goodnesschar_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/ApJ/709/168/table2List of eccentric planets and the amplitudes of their correspondent eccentric harmonicsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_NameSimbad column added by the CDSintnullableNameStar namemeta.id;meta.mainm_Name[b-f] Planet designationphys.masscharmsin(i)Planet sin(i) massphys.massfloatPPlanet orbital perioddtime.periodfloatePlanet eccentricitysrc.orbital.eccentricityfloatKPlanet radial velocity semi-amplitudem/sphys.size;src.orbitalfloatKeSemi-amplitude of first eccentric harmonicm/sphys.size;src.orbitalfloatKe2Semi-amplitude of second order harmonicm/sphys.size;src.orbitalfloatmhsin(i)Mass of the possible inner companion(5.97236x10+24kg)phys.massfloat_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.main