J/ApJ/817/L20ivo://CDS.VizieR/J/ApJ/817/L20doi:10.26093/cds/vizier.18179020CDSWright D.J.Wittenmyer R.A.Tinney C.G.Bentley J.S.Zhao J.2017-07-04T07:08:09Z2016-05-17T15:12:54ZCDS support team

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

cds-question@unistra.frradial-velocitymultiple-starssolar-system-planetsWe use archival HARPS spectra to detect three planets orbiting the M3 dwarf Wolf 1061 (GJ 628). We detect a 1.36M_{Earth}_ minimum-mass planet with an orbital period P=4.888days (Wolf 1061b), a 4.25M_{Earth}_ minimum-mass planet with orbital period P=17.867days (Wolf 1061c), and a likely 5.21M_{Earth}_ minimum-mass planet with orbital period P=67.274days (Wolf 1061d). All of the planets are of sufficiently low mass that they may be rocky in nature. The 17.867day planet falls within the habitable zone for Wolf 1061 and the 67.274day planet falls just outside the outer boundary of the habitable zone. There are no signs of activity observed in the bisector spans, cross-correlation FWHMs, calcium H & K indices, NaD indices, or H{alpha} indices near the planetary periods. We use custom methods to generate a cross-correlation template tailored to the star. The resulting velocities do not suffer the strong annual variation observed in the HARPS DRS velocities. This differential technique should deliver better exploitation of the archival HARPS data for the detection of planets at extremely low amplitudes.2016ApJ...817L..20Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/817/L20CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/264 : ASAS Variable Stars in Southern hemisphere (Pojmanski+, 2002-2005)J/ApJ/807/45 : Habitable planets cand. around M dwarfs (Dressing+, 2015)J/A+A/577/A132 : Stellar parameters of early M dwarfs (Maldonado+, 2015)J/A+A/577/A128 : M dwarfs CARMENES input catalog. I (Alonso-Floriano+, 2015)J/MNRAS/432/1203 : Rotation periods of M-dwarf stars (McQuillan+, 2013)J/MNRAS/431/2063 : UV/X-ray activity of M dwarfs within 10pc (Stelzer+, 2013)J/ApJ/767/95 : Improved parameters of smallest KIC stars (Dressing+, 2013)J/A+A/551/L8 : Chromospheric activity of field stars (Pace, 2013)J/A+A/549/A109 : HARPS XXXI. The M-dwarf sample (Bonfils+, 2013)J/MNRAS/421/3189 : CaII and H{alpha} data for dK5/dM4 stars (Houdebine, 2012)J/ApJ/725/875 : Chromospheric activity for CPS stars (Isaacson+, 2010)J/ApJ/704/975 : Rotational velocities for M dwarfs (Jenkins+, 2009)J/ApJ/670/1367 : Gemini Deep Planet Survey (Lafreniere+, 2007)J/A+A/392/215 : CORALIE survey for extrasolar planets. IX. (Santos+ 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/817/L20https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/817/L20http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/817/L20https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/817/L20https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/817/L20http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/817/L20GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/817/L20/table2Wolf 1061 velocities from this work and HARPS, cross-correlation FWHM, bisector spans, and the S-index, Na D and H{alpha} activity indicesJDJulian Datedtime.epochdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRVel[-7.4/7.4] Radial velocity from this paperm/sphys.veloc;pos.heliocentricfloate_NaD[0.02/0.1] Error in NaDstat.errorfloate_RVel[0.4/4.2] Error in RVelm/sstat.error;spect.dopplerVelocfloatHRVel[-6.8/9] HARPS data reduction software (DRS) radial velocitym/sphys.veloc;pos.heliocentricfloate_HRVel[0.3/3.4] Error in HRVelm/sstat.errorfloatFWHM[3394/3436] Full-width-half-maximum of cross-correlation function (CCF)m/sspect.line.widthinte_FWHM[19/27] Error in FWHMm/sstat.error;phys.angSizeintBIS[-11.8/6.1] Bisector of cross-correlation functionm/sphys.velocfloate_BIS[0.9/8] Error in BISm/sstat.errorfloatS[0.01/0.3] S-index valuespect.indexfloate_S[0.0007/0.005] Error in Sstat.errorfloatNaD[4.4/9.6] NaD index valuemeta.code;spect.indexfloatHa[0.076/0.089] H{alpha} index valuespect.index;em.line.Halphadoublee_Ha[0/0.0003] Error in Hastat.errordouble