TESS discovery of two super-Earths orbiting the M-dwarf stars TOI-6002 and TOI-5713 near the radius valley

Abstract

We present the validation of two TESS super-Earth candidates transiting the mid-M dwarfs TOI-6002 and TOI-5713 every 10.90 and 10.44 days, respectively. The first star (TOI-6002) is located $32.038\pm 0.019$ pc away, with a radius of $0.2409_{-0.0065}^{+0.0066}$ \rsun, a mass of $0.2105_{-0.0048}^{+0.0049}$ \msun, and an effective temperature of $3229_{-57}^{+77}$ K. The second star (TOI-5713) is located $40.946\pm 0.032$ pc away, with a radius of $0.2985_{-0.0072}^{+0.0073}$ \rsun, a mass of $0.2653\pm 0.0061$ \msun, and an effective temperature of $3225_{-40}^{+41}$ K. We validated the planets using TESS data, ground-based multi-wavelength photometry from many ground-based facilities, as well as high-resolution AO observations from Keck/NIRC2. TOI-6002 b has a radius of $1.65_{-0.19}^{+0.22}$ \re\ and receives $1.77_{-0.11}^{+0.16}{S}_{\oplus }$. TOI-5713 b has a radius of $1.77_{-0.11}^{+0.13} \re$ and receives $2.42\pm 0.11S_{\oplus }$. Both planets are located near the radius valley and near the inner edge of the habitable zone of their host stars, which makes them intriguing targets for future studies to understand the formation and evolution of small planets around M-dwarf stars.

References in corpus (84)

• Astropy: A Community Python Package for Astronomy
• Gaia Data Release 2. Summary of the contents and survey properties
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
• The Transiting Exoplanet Survey Satellite
• Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
• MESA Isochrones and Stellar Tracks (MIST) 0: Methods for the construction of stellar isochrones
• Local Kinematics and the Local Standard of Rest
• The California-Kepler Survey. III. A Gap in the Radius Distribution of Small Planets
• Las Cumbres Observatory Global Telescope Network
• Kepler Presearch Data Conditioning II - A Bayesian Approach to Systematic Error Correction
• Gaia Early Data Release 3: Parallax bias versus magnitude, colour, and position
• A box-fitting algorithm in the search for periodic transits
• Kepler Presearch Data Conditioning I - Architecture and Algorithms for Error Correction in Kepler Light Curves
• Kepler planets: a tale of evaporation
• The Infrared Telescope Facility (IRTF) Spectral Library: Cool Stars
• How to Constrain Your M Dwarf: measuring effective temperature, bolometric luminosity, mass, and radius
• AstroImageJ: Image Processing and Photometric Extraction for Ultra-Precise Astronomical Light Curves
• AstroImageJ: Image Processing and Photometric Extraction for Ultra-Precise Astronomical Light Curves (Expanded Edition)
• An Infrared Spectroscopic Sequence of M, L and T Dwarfs
• Constraining the Age-Activity Relation for Cool Stars: The SDSS DR5 Low-Mass Star Spectroscopic Sample
• petitRADTRANS: a Python radiative transfer package for exoplanet characterization and retrieval
• The Transiting Exoplanet Survey Satellite: Simulations of planet detections and astrophysical false positives
• An asteroseismic view of the radius valley: stripped cores, not born rocky
• The Role of Core Mass in Controlling Evaporation: the Kepler Radius Distribution and the Kepler-36 Density Dichotomy
• Core-powered mass loss and the radius distribution of small exoplanets
• Metallicity and Temperature Indicators in M dwarf K band Spectra: Testing New & Updated Calibrations With Observations of 133 Solar Neighborhood M dwarfs
• How to Constrain Your M dwarf II: the mass-luminosity-metallicity relation from 0.075 to 0.70$M_{\odot }$
• Planetary population synthesis coupled with atmospheric escape: a statistical view of evaporation
• M-Subdwarfs: Spectroscopic Classification and the Metallicity Scale
• Kepler Data Validation I -- Architecture, Diagnostic Tests, and Data Products for Vetting Transiting Planet Candidates
• Limb and gravity-darkening coefficients for the TESS satellite at several metallicities, surface gravities, and microturbulent velocities
• Understanding The Effects Of Stellar Multiplicity On The Derived Planet Radii From Transit Surveys: Implications for Kepler, K2, and TESS
• Density, not radius, separates rocky and water-rich small planets orbiting M dwarf stars
• Low-Mass Dwarf Template Spectra from the Sloan Digital Sky Survey
• Super-Earth Atmospheres: Self-Consistent Gas Accretion and Retention
• Planetary nebulae seen with TESS: Discovery of new binary central star candidates from Cycle 1
• The Kepler Follow-Up Observation Program. I. A Catalog of Companions to Kepler Stars from High-Resolution Imaging
• Kepler Data Validation II -- Transit Model Fitting and Multiple-Planet Search
• Transit Least Squares: Optimized transit detection algorithm to search for periodic transits of small planets
• How to Characterize Habitable Worlds and Signs of Life
• SOAR TESS Survey. I: Sculpting of TESS planetary systems by stellar companions
• Wotan: Comprehensive time-series de-trending in Python
• PyTransit: Fast and Easy Exoplanet Transit Modelling in Python
• Evolutionary Analysis of Gaseous Sub-Neptune-Mass Planets with MESA
• VULCAN: an Open-Source, Validated Chemical Kinetics Python Code for Exoplanetary Atmospheres
• Revised metallicity classes for low-mass stars: dwarfs (dM), subdwarfs (sdM), extreme subdwarfs (esdM), and ultra subdwarfs (usdM)
• Prospecting in late-type dwarfs: a calibration of infrared and visible spectroscopic metallicities of late-K and M dwarfs spanning 1.5 dex
• PALM-3000: Exoplanet Adaptive Optics for the 5-meter Hale Telescope
• Spectroscopy of New High Proper Motion Stars in the Northern Sky. I. New Nearby Stars, New High Velocity Stars, and an Enhanced Classification Scheme for M Dwarfs
• Evolution of the radius valley around low mass stars from $Kepler$ and $K2$
• Vetting of 384 TESS Objects of Interest with TRICERATOPS and Statistical Validation of 12 Planet Candidates
• How formation time-scales affect the period dependence of the transition between rocky super-Earths and gaseous sub-Neptunes and implications for ${\eta }_{\oplus }$
• The Factory and The Beehive II. Activity and Rotation in Praesepe and the Hyades
• The Ages of the Thin Disk, Thick Disk, and the Halo from Nearby White Dwarfs
• The 10 parsec sample in the Gaia era
• The Solar Neighborhood XLIV: RECONS Discoveries within 10 Parsecs
• On the Frequency of Potential Venus Analogs from Kepler Data
• A super-Earth and a sub-Neptune orbiting the bright, quiet M3 dwarf TOI-1266
• Prospecting in Ultracool Dwarfs: Measuring the Metallicities of Mid- and Late-M Dwarfs
• Multicolour photometry for exoplanet candidate validation
• Primordial Radius Gap and Potentially Broad Core Mass Distributions of Super-Earths and Sub-Neptunes
• The runaway greenhouse radius inflation effect - An observational diagnostic to probe water on Earth-size planets and test the Habitable Zone concept
• Detection of Potential Transit Signals in the First Three Quarters of Kepler Mission Data
• Two temperate super-Earths transiting a nearby late-type M dwarf
• Optical Spectroscopic Classification and Membership of Young M Dwarfs in Star-Forming Regions
• WASP-64b and WASP-72b: two new transiting highly irradiated giant planets
• Transmission spectrum of Venus as a transiting exoplanet
• A fading radius valley towards M-dwarfs, a persistent density valley across stellar types
• Discovery of three new transiting hot Jupiters: WASP-161 b, WASP-163 b and WASP-170 b
• A revised planetary nebula luminosity function distance to NGC 628 using MUSE
• Gaia Search for stellar Companions of TESS Objects of Interest
• GJ 273: On the formation, dynamical evolution and habitability of a planetary system hosted by an M dwarf at 3.75 parsec
• Gaia Search for stellar Companions of TESS Objects of Interest II
• A super-Earth and a mini-Neptune near the 2:1 MMR straddling the radius valley around the nearby mid-M dwarf TOI-2096
• The Demographics of Terrestrial Planets in the Venus Zone
• Systematics-insensitive periodic signal search with K2
• TOI-1695 b: A Water World Orbiting an Early M Dwarf in the Planet Radius Valley
• The SHERLOCK pipeline: new exoplanet candidates in the WASP-16, HAT-P-27, HAT-P-26, and TOI-2411 systems
• Finding Signs of Life on Earth-like Planets: High-resolution Transmission Spectra of Earth through time around FGKM stars
• TESS discovery of a super-Earth orbiting the M dwarf star TOI-1680
• A Venus in the Making? Predictions for JWST Observations of the Ultracool M-Dwarf planet LP 890-9 c
• Hot Earth or Young Venus? A nearby transiting rocky planet mystery
• Surface pressure impact on nitrogen-dominated USP super-Earth atmospheres

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