J/AJ/163/198ivo://CDS.VizieR/J/AJ/163/198doi:10.26093/cds/vizier.51630198CDSEberhardt J.Trifonov T.Kurster M.Stock S.Henning T.Wollbold A.,Reffert S.Lee M.H.Zechmeister M.Rodler F.Zakhozhay O.Heeren P.,Gandolfi D.Barragan O.Tala Pinto M.Wolthoff V.Sarkis P.Brems S.S.2023-12-20T08:29:04Z2022-10-24T06:48:16ZCDS support team

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

cds-question@unistra.frexoplanetsg-starsvisible-astronomyspectroscopyinfrared-astronomyradial-velocityWe present an independent Doppler validation and dynamical orbital analysis of the two-planet system HD107148, which was recently announced in Rosenthal et al. Our detailed analyses are based on literature HIRES data and newly obtained HARPS and CARMENES radial-velocity (RV) measurements as part of our survey in search for additional planets around single-planet systems. We perform a periodogram analysis of the available HIRES and HARPS precise RVs and stellar activity indicators. We do not find any apparent correlation between the RV measurements and the stellar activity indicators, thus linking the two strong periodicities to a moderately compact multiplanet system. We carry out orbital fitting analysis by testing various one- and two-planet orbital configurations and studying the posterior probability distribution of the fitted parameters. Our results solidify the existence of a Saturn-mass planet (HD107148b, discovered first) with a period of Pb~77.2days and a second, eccentric (ec~0.4), Neptune-mass exoplanet (HD107148c) with an orbital period of Pc~18.3days. Finally, we investigate the two- planet system's long-term stability and overall orbital dynamics with the posterior distribution of our preferred orbital configuration. Our N-body stability simulations show that the system is long-term stable and exhibits large secular osculations in eccentricity but in no particular mean motion resonance configuration. The HD107148 system, consisting of a solar-type main-sequence star with two giant planets in a rare configuration, features a common proper-motion white dwarf companion and is therefore a valuable target for understanding the formation and evolution of planetary systems.2022AJ....163..198Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/198CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/337 : Gaia DR1 (Gaia Collaboration, 2016)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/A+A/415/391 : The CORALIE survey for extrasolar planets. XII (Mayor+, 2004)J/ApJ/646/505 : Catalog of nearby exoplanets (Butler+, 2006)J/ApJ/709/168 : Eccentric orbits in exoplanets (Anglada-Escude+, 2010)J/ApJ/719/890 : Keck radial velocities of GJ 876 (Rivera+, 2010)J/AJ/144/102 : Catalog wide companions to Hipparcos stars (Tokovinin+, 2012)J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)J/ApJS/210/5 : The twenty-five year Lick planet search (Fischer+, 2014)J/AJ/153/208 : LCES HIRES/Keck Rvel Exoplanet Survey (Butler+, 2017)J/MNRAS/480/2846 : 95 RV-discovered single-planet systems (Boisvert+, 2018)J/A+A/618/A115 : HD 147379 radial velocities (Kaminski+, 2018)J/A+A/612/A49 : 324 CARMENES M dwarfs velocities (Reiners+, 2018)J/A+A/615/A76 : Spectroscopic parameters of stars (SPECIES). I. (Soto+, 2018)J/A+A/609/A117 : CARMENES radial velocity curves of 7 M-dwarf (Trifonov+, 2018)J/MNRAS/484/L8 : Correcting HIRES/Keck RVs systematic errors (Tal-Or+, 2019)J/A+A/643/A112 : CARMENES VIS RVs of 3 M dwarfs (Stock+, 2020)J/A+A/636/A74 : HARPS radial velocity database (Trifonov+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/163/198https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/163/198http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/163/198https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/163/198https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/163/198http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/163/198GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/163/198/tableaCombined table from original tablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian datedtime.epochdoubleRVelRadial velocitym/sspect.dopplerVelocfloate_RVelError on RVelm/sstat.error;spect.dopplerVelocfloatCRXStellar activity indicators chromatic indexm/sspect.indexfloate_CRXError on CRXm/sstat.errorfloatdLWDifferential line width (m/s*km/s)spect.line.width;arith.difffloate_dLWError on dLWstat.errorfloatHa? H{alpha} indexspect.indexfloatnullablee_Ha? Error on Hastat.errorfloatnullableNaD1? Sodium doublet index, Na D1meta.code.multipfloatnullablee_NaD1? Error on NaD1stat.errorfloatnullableNaD2? Sodium doublet index, Na D2meta.code.multipfloatnullablee_NaD2? Error on NaD2stat.errorfloatnullableFWHM? Full Width at Half Maximumkm/sspect.line.widthfloatnullablee_FWHM? Error on FWHMkm/sstat.error;phys.angSizefloatnullableCont? Contrastphot.flux;arith.ratiofloatnullablee_Cont? Error on Contstat.errorfloatnullableBIS? Cross-correlation function bisector slopephys.velocfloatnullablee_BIS? Negative error on BISstat.errorfloatnullableInstInstrument usedmeta.id;instrchar