J/AJ/165/167ivo://CDS.VizieR/J/AJ/165/167doi:10.26093/cds/vizier.51650167CDSCherubim C.Cloutier R.Charbonneau D.Stockdale C.Stassun K.G.,Schwarz R.P.Safonov B.Mortier A.Lewin P.Latham D.W.Horne K.,Haywood R.D.Gonzales E.Goliguzova M.V.Collins K.A.Ciardi D.R.,Bieryla A.Belinski A.A.Wohler B.Watson C.A.Vanderspek R.Udry S.,Sozzetti A.Segransan D.Sasselov D.Ricker G.R.Rice K.Poretti E.,Piotto G.Pepe F.Molinari E.Micela G.Mayor M.Lovis C.,Lopez-Morales M.Jenkins J.M.Essack Z.Dumusque X.Doty J.P.,Colon K.D.Cameron A.C.Buchhave L.A.2025-02-06T20:08:46Z2023-09-20T13:34:24ZCDS support team

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

cds-question@unistra.frexoplanetsm-starsvisible-astronomyspectroscopyradial-velocityCharacterizing the bulk compositions of transiting exoplanets within the M-dwarf radius valley offers a unique means to establish whether the radius valley emerges from an atmospheric mass-loss process or is imprinted by planet formation itself. We present the confirmation of such a planet orbiting an early M-dwarf (Tmag=11.0294{+/-}0.0074, Ms=0.513{+/-}0.012M{sun}, Rs=0.515{+/-}0.015R{sun}, and Teff=3690{+/-}50K): TOI-1695b (P=3.13 days and Rp=1.90_-0.14_^+0.16^R{Earth}). TOI-1695b's radius and orbital period situate the planet between model predictions from thermally driven mass loss versus gas depleted formation, offering an important test case for radius valley emergence models around early-M dwarfs. We confirm the planetary nature of TOI-1695b based on five sectors of TESS data and a suite of follow-up observations including 49 precise radial velocity measurements taken with the HARPS-N spectrograph. We measure a planetary mass of 6.36{+/-}1.00M{Earth}, which reveals that TOI-1695b is inconsistent with a purely terrestrial composition of iron and magnesium silicate, and instead is likely a water-rich planet. Our finding that TOI-1695b is not terrestrial is inconsistent with the planetary system being sculpted by thermally driven mass loss. We present a statistical analysis of seven well-characterized planets within the M-dwarf radius valley demonstrating that a thermally driven mass-loss scenario is unlikely to explain this population.2023AJ....165..167Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/165/167CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/335 : Revised catalog of GALEX UV sources (GUVcat_AIS GR6+7) (Bianchi+ 2017)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)J/A+A/468/1115 : Thorium and argon lines in the visible (Lovis+, 2007)J/ApJ/720/1118 : i-band photometry of HAT-P-16 (Buchhave+, 2010)J/ApJS/200/15 : HARPS-TERRA project. I. (Anglada-Escude+, 2012)J/ApJS/208/9 : Intrinsic colors & temperatures of PMS stars (Pecaut+, 2013)J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)J/A+A/575/A119 : HARPS RV and stellar activity (Astudillo-Defru+, 2015)J/ApJ/807/45 : Habitable planets orbiting M dwarfs (Dressing+, 2015)J/ApJ/804/64 : Empirical and model parameters of 183 M dwarfs (Mann+, 2015)J/ApJ/809/77 : Transiting Exoplanet Survey Satellite (Sullivan+, 2015)J/MNRAS/457/2877 : Kepler M dwarf stars revised properties (Gaidos+, 2016)J/ApJ/821/93 : Rotation & Galactic kinematics mid M dwarfs (Newton+, 2016)J/AJ/152/180 : Bolometric fluxes eclipsing binaries Tycho2 (Stassun+, 2016)J/A+A/600/A13 : HARPS Mdwarf magnetic activity (Astudillo-Defru+, 2017)J/AJ/154/109 : California-Kepler Survey. III. Planet radii (Fulton+, 2017)J/AJ/153/71 : Kepler follow-up observation program. I. (Furlan+, 2017)J/AJ/153/136 : Planets & host stars with Gaia parallaxes (Stassun+, 2017)J/AJ/156/264 : California-Kepler Survey. VII. Planet radius (Fulton+, 2018)J/AJ/155/136 : Planets orbiting bright star K2 campaigns 0-10 (Mayo+, 2018)J/AJ/156/18 : APOGEE DR14 Binary comp evolved stars (Price-Whelan+, 2018)J/ApJ/871/63 : How to constrain your M dwarf. II. Nearby bin (Mann+, 2019)J/ApJ/875/29 : Spectroscopic analysis of CKS sample. I. (Martinez+, 2019)J/AJ/160/108 : Gaia-Kepler stellar properties. II. Planets (Berger+, 2020)J/AJ/159/211 : Exoplanets parameters from Kepler and K2 (Cloutier+, 2020)J/AJ/160/22 : TOI1235 Radial velocity & optical spectro (Cloutier+, 2020)J/AJ/159/100 : Flux & RVs of dwarf G9-40 with K2 & HPF (Stefansson+, 2020)J/AJ/162/174 : HARPS radial velocity follow up of GJ 1214 (Cloutier+, 2021)J/AJ/162/79 : HARPS radial velocity follow up of TOI1634 (Cloutier+, 2021)J/ApJS/254/39 : Exoplanet candidates from TESS 1st 2yr obs (Guerrero+, 2021)J/AJ/164/96 : SPIRou and IRD radial velocity of TOI-1452 (Cadieux+, 2022)J/other/Sci/377.1211 : RV and LC of 8 M dwarf stars with planets (Luque+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/165/167https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/165/167http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/165/167https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/165/167https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/165/167http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/165/167GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/165/167/fig5TOI-1695 HARPS-N radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[2459190/2459589] Barycentric Julian Date at TDBdtime.epochdoubleRVel[-15.4/10.6] Radial velocitym/sspect.dopplerVelocdoublee_RVel[1/4] Uncertainty in RVelm/sstat.error;spect.dopplerVelocdouble