J/ApJ/829/L9ivo://CDS.VizieR/J/ApJ/829/L9doi:10.26093/cds/vizier.18299009CDSVanderburg A.Bieryla A.Duev D.A.Jensen-Clem R.Latham D.W.,Mayo A.W.Baranec C.Berlind P.Kulkarni S.Law N.M.Nieberding M.N.,Riddle R.Maissa S.2017-06-13T11:09:15Z2017-01-23T13:23:57ZCDS support team

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

cds-question@unistra.frsolar-system-planetsmultiple-starsinfrared-photometryvisible-astronomyphotometryWe report the discovery of two super-Earth-sized planets transiting the bright (V=8.94, K=7.07) nearby late G-dwarf HD 3167, using data collected by the K2 mission. The inner planet, HD 3167 b, has a radius of 1.6R_{Earth}_ and an ultra-short orbital period of only 0.96d. The outer planet, HD 3167 c, has a radius of 2.9R_{Earth}_ and orbits its host star every 29.85 days. At a distance of just 45.8+/-2.2pc, HD3167 is one of the closest and brightest stars hosting multiple transiting planets, making HD 3167 b and c well suited for follow-up observations. The star is chromospherically inactive with low rotational line-broadening, ideal for radial velocity observations to measure the planets' masses. The outer planet is large enough that it likely has a thick gaseous envelope that could be studied via transmission spectroscopy. Planets transiting bright, nearby stars like HD 3167 are valuable objects to study leading up to the launch of the James Webb Space Telescope.2016ApJ...829L...9Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/829/L9CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/224/2 : K2 EPIC stellar properties for 138600 targets (Huber+, 2016)J/ApJS/224/12 : Kepler planetary candidates. VII. 48-month (Coughlin+, 2016)J/ApJS/222/14 : Planetary candidates from 1st yr K2 mission (Vanderburg+, 2016)J/ApJ/822/86 : False positive proba. for Q1-Q17 DR24 KOIs (Morton+, 2016)J/ApJ/809/77 : Transiting Exoplanet Survey Satellite (TESS) (Sullivan+, 2015)J/other/Nat/486.375 : Stellar parameters of KOI stars (Buchhave+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/829/L9https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/829/L9http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/829/L9https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/829/L9https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/829/L9http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/829/L9GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapAssociated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/ApJ/829/L9OpticalInfrareddefaultJ/ApJ/829/L9/fig1K2 light curve of HD 3167recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[2560.7/2637.8] Barycentric Julian Date; BJD-2454833dtime.epochdoubleRFlux[0.9986/1.0009] Relative fluxphot.flux;arith.ratiodoubleJ/ApJ/829/L9/curveRobo-AO contrast curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSep[0.1/1.6] Angular separation from HD 3167arcsecpos.angDistancefloatmag[0.4/6.2] Relative brightness of a nearby star at Sep which can be excluded at 5{sigma} confidence; i-bandmagphot.flux;arith.ratiofloat