J/A+A/623/A114ivo://CDS.VizieR/J/A+A/623/A114doi:10.26093/cds/vizier.36230114CDSLuque R.Nowak G.Palle E.Dai F.Kaminski A.Nagel E.Hidalgo D.,Bauer F.Lafarga M.Livingston J.Barragan O.Hirano T.Fridlund M.,Gandolfi D.Justesen A.B.Hjorth M.Van Eylen V.Winn J.N.Esposito M.,Morales J.C.Albrecht S.Alonso R.Amado P.J.Beck P.Caballero J.A.,Cabrera J.Cochran W.D.Csizmadia Sz.Deeg H.Eigmueller P.Endl M.,Erikson A.Fukui A.Grziwa S.Guenther E.W.Hatzes A.P.Knudstrup E.,Korth J.Lam K.W.F.Lund M.N.Mathur S.Montanes-Rodriguez P.,Narita N.Nespral D.Niraula P.Paetzold M.Persson C.M.,Prieto-Arranz J.Quirrenbach A.Rauer H.Redfield S.Reiners A.,Ribas I.Smith A.M.S.2019-03-21T11:25:22Z2019-03-14T07:38:11ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsphotometryWe present the discovery and characterisation of a new transiting planet from Campaign 17 of the Kepler extended mission K2. The planet K2-292 b is a warm sub-Neptune on a 17-d orbit around a bright (V=9.9mag) solar-like G3 V star with a mass and radius of Ms=1.00+/-0.03M_{sun}_ and Rs=1.09+/-0.03R_{sun}_ respectively. We model simultaneously the K2 photometry and CARMENES spectroscopic data and derive a radius of Rp=2.63_-0.10+^+0.12^R_{earth}_ and mass of Mp=24.5_-4.4_^+4.4^M_{earth}_, yielding a mean density of 7.4_-1.5_^+1.6^g/cm^3^, which makes it one of the densest sub-Neptune planets known to date. We also detect a linear trend in radial velocities of HD 119130 that suggests a long-period companion with a minimum mass on the order of 33M_{earth}_. If confirmed, it would support a formation scenario of K2-292 b by migration caused by Kozai-Lidov oscillations.2019A&A...623A.114Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/623/A114CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/623/A114https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/623/A114http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/623/A114https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/623/A114https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/623/A114http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/623/A114GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/623/A114/table1K2-292 light curve from K2 Campaign 17recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian date of observation (JD-2454833)dtime.epochdoubleFluxRelative fluxphot.flux;arith.ratiodoublee_FluxRelative flux errorstat.error;phot.fluxdouble