J/ApJ/821/74ivo://CDS.VizieR/J/ApJ/821/74doi:10.26093/cds/vizier.18210074CDSJohnson M.C.Endl M.Cochran W.D.Meschiari S.Robertson P.,MacQueen P.J.Brugamyer E.J.Caldwell C.Hatzes A.P.Ramirez I.,Wittenmyer R.A.2017-06-20T13:16:03Z2016-08-24T07:45:38ZCDS support team

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

cds-question@unistra.frmultiple-starsradial-velocityThe nearby (6.5pc) star HD219134 was recently shown by Motalebi+ (2015, J/A+A/584/A72) and Vogt+ (2015ApJ...814...12V) to host several planets, the innermost of which is transiting. We present 27yr of radial velocity (RV) observations of this star from the McDonald Observatory Planet Search program, and 19yr of stellar activity data. We detect a long-period activity cycle measured in the CaII SHK index, with a period of 4230+/-100d (11.7yr), very similar to the 11yr solar activity cycle. Although the period of the Saturn-mass planet HD219134h is close to half that of the activity cycle, we argue that it is not an artifact due to stellar activity. We also find a significant periodicity in the SHK data due to stellar rotation with a period of 22.8d. This is identical to the period of planet f identified by Vogt+ (2015ApJ...814...12V), suggesting that this RV signal might be caused by rotational modulation of stellar activity rather than a planet. Analysis of our RVs allows us to detect the long-period planet HD219134h and the transiting super-Earth HD219134b. Finally, we use our long time baseline to constrain the presence of longer period planets in the system, excluding to 1{sigma} objects with Msini>0.36M_J_ at 12yr (corresponding to the orbital period of Jupiter) and Msini>0.72M_J_ at a period of 16.4yr (assuming a circular orbit for an outer companion).2016ApJ...821...74Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/821/74CatalogResearchIsServedByTAP VizieR generic servicerelated-toIII/185 : Search for Jupiter-Mass Companions (Walker+, 1995)J/ApJS/224/12 : Kepler planetary candidates. VII. 48-month (Coughlin+, 2016)J/ApJ/818/34 : Radial velocity monitoring of 5 FGK stars (Endl+, 2016)J/ApJ/817/104 : Keck/HIRES radial velocity obs. of HD32963 (Rowan+, 2016)J/A+A/585/A134 : HD1461, HD40307, and HD204313 radial velocities (Diaz+, 2016)J/A+A/584/A72 : A rocky planet at 6.5pc from the Sun (Motalebi+ 2015)J/ApJ/784/45 : Kepler's multiple planet candidates. III. (Rowe+, 2014)J/A+A/552/A78 : Solar like stars radial velocities (Zechmeister+, 2013)J/A+A/552/A27 : Stellar activity and kinematics of FGK stars (Murgas+, 2013)J/ApJ/764/3 : H{alpha} indices in M low-mass stars (Robertson+, 2013)J/ApJ/725/875 : Chromospheric activity for CPS stars (Isaacson+, 2010)J/A+A/521/A12 : Radial velocities of nearby late-type stars (Maldonado+, 2010)J/A+A/520/A79 : FGK stars chromospheric activity (Martinez-Arnaiz+, 2010)J/A+A/514/A97 : High-resolution sp. of Late-type stars (Lopez-Santiago+ 2010)J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008)J/ApJS/168/297 : Stellar parameters of nearby cool stars (Takeda+, 2007)J/ApJS/159/141 : Spectroscopic properties of cool stars. I. (Valenti+, 2005)J/ApJS/141/503 : Radial Velocities for 889 late-type stars (Nidever+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/821/74https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/821/74http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/821/74https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/821/74https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/821/74http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/821/74GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/821/74/table2Keck/HIRES radial velocities and S-index datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCCDCCD used in the observation (1)meta.id;instrcharSeqRunning sequence numbermeta.id;meta.mainintBJDBarycentric Julian Datedtime.epochdoubledRV[-14/31]? Differential radial velocity (G1)m/sphys.veloc;arith.difffloatnullablee_dRV[3/7]? Uncertainty in dRVm/sstat.errorfloatnullableSHK[0.13/0.35]? The S_HK_ indexspect.indexfloatnullablee_SHK[0.004/0.03]? Uncertainty in SHKstat.errorfloatnullableJ/ApJ/821/74/table1HJST radial velocities and S-index datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPhasePhase of observational program (1)meta.id;instrcharSeqRunning sequence numbermeta.id;meta.mainintBJDBarycentric Julian Datedtime.epochdoubledRV[-58/45] Differential radial velocity (G1)m/sphys.veloc;arith.difffloate_dRV[3/11]? Uncertainty in dRV (2)m/sstat.errorfloatnullableSHK[0.16/0.5]? The S_HK_ indexspect.indexfloatnullablee_SHK[0.01/0.05]? Uncertainty in SHKstat.errorfloatnullable