J/AJ/157/33ivo://CDS.VizieR/J/AJ/157/33doi:10.26093/cds/vizier.51570033CDSMawet D.Hirsch L.Lee E.J.Ruffio J.-B.Bottom M.Fulton B.J.,Absil O.Beichman C.Bowler B.Bryan M.Choquet E.Ciardi D.,Christiaens V.Defrere D.Gomez Gonzalez C.A.Howard A.W.Huby E.,Isaacson H.Jensen-Clem R.Kosiarek M.Marcy G.Meshkat T.Petigura E.,Reggiani M.Ruane G.Serabyn E.Sinukoff E.Wang J.Weiss L.Ygouf M.2019-06-06T05:35:48Z2019-05-31T09:30:35ZCDS support team

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

cds-question@unistra.frdwarf-starsk-starsspectroscopyradial-velocityexoplanetsWe present the most sensitive direct imaging and radial velocity (RV) exploration of {epsilon} Eridani to date. {epsilon} Eridani is an adolescent planetary system, reminiscent of the early solar system. It is surrounded by a prominent and complex debris disk that is likely stirred by one or several gas giant exoplanets. The discovery of the RV signature of a giant exoplanet was announced 15 yr ago, but has met with scrutiny due to possible confusion with stellar noise. We confirm the planet with a new compilation and analysis of precise RV data spanning 30 yr, and combine it with upper limits from our direct imaging search, the most sensitive ever performed. The deep images were taken in the Ms band (4.7 {mu}m) with the vortex coronagraph recently installed in W.M. Keck Observatory's infrared camera NIRC2, which opens a sensitive window for planet searches around nearby adolescent systems. The RV data and direct imaging upper limit maps were combined in an innovative joint Bayesian analysis, providing new constraints on the mass and orbital parameters of the elusive planet. {epsilon} Eridani b has a mass of 0.78_-0.12_^+0.38^ M_Jup_ and is orbiting {epsilon} Eridani at about 3.48+/-0.02 au with a period of 7.37+/-0.07 yr. The eccentricity of {epsilon} Eridani b's orbit is 0.07_-0.05_^+0.06^, an order of magnitude smaller than early estimates and consistent with a circular orbit. We discuss our findings from the standpoint of planet-disk interactions and prospects for future detection and characterization with the James Webb Space Telescope.2019AJ....157...33Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/157/33CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/612/481 : Optical brightness of {epsilon} Eri dust ringJ/ApJ/700/1647 : Search for planetary companions with Spitzer/IRACJ/ApJ/744/138 : Calibrated visibilities of {epsilon} Eri (Baines+, 2012)J/A+A/552/A78 : Solar like stars radial velocities (Zechmeister+, 2013)J/ApJ/763/L26 : SMARTS observations of eps Eridani (Metcalfe+, 2013)J/AJ/154/245 : Imaging survey of Spitzer-detected debris diskshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/157/33https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/157/33http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/157/33https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/157/33https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/157/33http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/157/33GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/AJ/157/33/RVsCombined table from original tablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument usedmeta.id;instrcharJD[2455110.97985/2457830.71979] Julian Datedtime.epochdoubleRV[-24.97/32.35] Radial velocity (1)m/sphys.veloc;pos.heliocentricfloate_RV[0.51/18.79] The 1{sigma} uncertainty in RV (2)m/sstat.errorfloatSHK[0/0.604] The S_HK_ value (3)spect.indexfloat