J/AJ/160/81ivo://CDS.VizieR/J/AJ/160/81doi:10.26093/cds/vizier.51600081CDSKane S.R.Turnbull M.C.Fulton B.J.Rosenthal L.J.Howard A.W.,Isaacson H.Marcy G.W.Weiss L.M.2021-09-22T07:25:33Z2020-11-05T07:41:20ZCDS support team

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

cds-question@unistra.frexoplanetsg-starsradial-velocityvisible-astronomyUncovering the occurrence rate of terrestrial planets within the habitable zone (HZ) of their host stars has been a particular focus of exoplanetary science in recent years. The statistics of these occurrence rates have largely been derived from transiting planet discoveries, and have uncovered numerous HZ planets in compact systems around M-dwarf host stars. Here we explore the width of the HZ as a function of spectral type, and the dynamical constraints on the number of stable orbits within the HZ for a given star. We show that, although the Hill radius for a given planetary mass increases with larger semimajor axis, the width of the HZ for earlier-type stars allows for more terrestrial planets in the HZ than late-type stars. In general, dynamical constraints allow ~6 HZ Earth-mass planets for stellar masses >~0.7M{sun}, depending on the presence of farther out giant planets. As an example, we consider the case of Beta CVn, a nearby bright solar-type star. We present 20yr of radial velocities (RV) from the Keck/High Resolution Echelle Spectrometer (HIRES) and Automated Planet Finder (APF) instruments and conduct an injection-recovery analysis of planetary signatures in the data. Our analysis of these RV data rule out planets more massive than Saturn within 10 au of the star. These system properties are used to calculate the potential dynamical packing of terrestrial planets in the HZ and show that such nearby stellar targets could be particularly lucrative for HZ planet detection by direct imaging exoplanet missions.2020AJ....160...81Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/160/81CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/159/141 : Spectroscopic properties of cool stars. I. (Valenti+, 2005)J/ApJ/694/1085 : Radii of exoplanet host stars (van Belle+, 2009)J/ApJ/716/1336 : Stability analysis of single-planet (Kopparapu+, 2010)J/ApJ/723/954 : HIRES radial velocities of GJ 581 (Vogt+, 2010)J/ApJ/746/101 : Diameters and temperatures of AFG stars (Boyajian+, 2012)J/A+A/537/A147 : Optimizing exoplanet transit searches (Herrero+, 2012)J/A+A/556/A126 : GJ667C Doppler & activity measurements (Anglada-Escude+, 2013)J/A+A/549/A109 : HARPS XXXI. The M-dwarf sample (Bonfils+, 2013)J/A+A/556/A110 : HARPS radial velocities of GJ 163 (Bonfils+, 2013)J/ApJ/767/95 : Stellar parameters of smallest KIC stars (Dressing+, 2013)J/ApJ/770/90 : Candidate planets in the habitable zones (Gaidos, 2013)J/A+A/552/A78 : Solar like stars radial velocities (Zechmeister+, 2013)J/ApJ/795/64 : Catalog exoplanet physical parameters (Foreman-Mackey+, 2014)J/ApJ/807/45 : Potentially habitable planets, M dwarfs (Dressing+, 2015)J/A+A/618/A115 : HD 147379 radial velocities (Kaminski+, 2018)J/ApJ/855/75 : 24 years monitoring of Sun and Sun-like stars (Radick+, 2018)J/AJ/155/48 : California-Kepler Survey. V. Masses and radii (Weiss+, 2018)J/A+A/627/A49 : Teegarden's Star RV and H{alpha} curves (Zechmeister+, 2019)J/ApJ/874/L8 : The TESS Habitable Zone Star Catalog (Kaltenegger+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/160/81https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/160/81http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/160/81https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/160/81https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/160/81http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/160/81GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/160/81/table1Beta CVn Radial VelocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument used (1)instr.setupcharBJD[1551/8919] Barycentric Julian Date; BJD-2450000dtime.epochdoubleRVel[-25.3/242] Radial velocitym/sphys.veloc;pos.heliocentricfloate_RVel[0.91/59] Uncertainty in RVelm/sstat.error;spect.dopplerVelocfloat