TESS discovery of a super-Earth orbiting the M dwarf star TOI-1680

Abstract

We report the discovery by the TESS mission of a super-Earth on a 4.8-d orbit around an inactive M4.5 dwarf (TOI-1680) validated by ground-based facilities. The host star is located 37.14 pc away, with a radius of 0.2100+/-0.0064 R_sun, mass of 0.1800+/-0.0044 M_sun and an effective temperature of 3211+/-100 K. We validated and characterized the planet using TESS data, ground-based multi-wavelength photometry from TRAPPIST, SPECULOOS, and LCO, as well as high-resolution AO observations from Keck/NIRC2 and Shane. Our analyses have determined the following parameters for the planet: a radius of 1.466+0.063/-0.049 R_earth and an equilibrium temperature of 404+/-14 K, assuming no albedo and perfect heat redistribution. Assuming a mass based on mass-radius relations, this planet is a promising target for atmospheric characterization with the James Webb Space Telescope (JWST).

arXiv commentAccepted in A&A

References in corpus (81)

• Gaia Data Release 2. Summary of the contents and survey properties
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• The Transiting Exoplanet Survey Satellite
• MESA Isochrones and Stellar Tracks (MIST). I: Solar-Scaled Models
• MESA Isochrones and Stellar Tracks (MIST) 0: Methods for the construction of stellar isochrones
• The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
• Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1
• The California-Kepler Survey. III. A Gap in the Radius Distribution of Small Planets
• Las Cumbres Observatory Global Telescope Network
• Planet Occurrence within 0.25 AU of Solar-type Stars from Kepler
• The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
• The false positive rate of Kepler and the occurrence of planets
• Kepler Presearch Data Conditioning II - A Bayesian Approach to Systematic Error Correction
• 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)
• The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope I. Overview of the instrument and its capabilities
• An Infrared Spectroscopic Sequence of M, L and T Dwarfs
• Probabilistic Forecasting of the Masses and Radii of Other Worlds
• Constraining the Age-Activity Relation for Cool Stars: The SDSS DR5 Low-Mass Star Spectroscopic Sample
• A Framework for Prioritizing the TESS Planetary Candidates Most Amenable to Atmospheric Characterization
• Stellar Diameters and Temperatures II. Main Sequence K & M Stars
• 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
• The ASAS-SN Catalog of Variable Stars I: The Serendipitous Survey
• The TESS Objects of Interest Catalog from the TESS Prime Mission
• 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
• The California-Kepler Survey. I. High Resolution Spectroscopy of 1305 Stars Hosting Kepler Transiting Planets
• 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
• Discoveries from a Near-infrared Proper Motion Survey using Multi-epoch 2MASS Data
• 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
• Breeding Super-Earths and Birthing Super-Puffs in Transitional Disks
• The rotation and Galactic kinematics of mid M dwarfs in the Solar Neighborhood
• Make Super-Earths, Not Jupiters: Accreting Nebular Gas onto Solid Cores at 0.1 AU and Beyond
• 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
• Wotan: Comprehensive time-series de-trending in Python
• SOAR TESS Survey. I: Sculpting of TESS planetary systems by stellar companions
• PyTransit: Fast and Easy Exoplanet Transit Modelling in Python
• Evolutionary Analysis of Gaseous Sub-Neptune-Mass Planets with MESA
• Characterizing the Cool KOIs III. KOI-961: A Small Star with Large Proper Motion and Three Small Planets
• The Solar Neighborhood XXXVII: The Mass-Luminosity Relation for Main Sequence M Dwarfs
• 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
• 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
• The California-Kepler Survey. II. Precise Physical Properties of 2025 Kepler Planets and Their Host Stars
• Transit Detection in the MEarth Survey of Nearby M Dwarfs: Bridging the Clean-First, Search-Later Divide
• 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
• SPECULOOS -- Ultracool Dwarf Transit Survey: Target List and Strategy
• 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
• Primordial Radius Gap and Potentially Broad Core Mass Distributions of Super-Earths and Sub-Neptunes
• The Gaia reference frame for bright sources examined using VLBI observations of radio stars
• Two temperate super-Earths transiting a nearby late-type M dwarf
• Optical Spectroscopic Classification and Membership of Young M Dwarfs in Star-Forming Regions
• prose: A Python framework for modular astronomical images processing
• WASP-64b and WASP-72b: two new transiting highly irradiated giant planets
• Discovery of three new transiting hot Jupiters: WASP-161 b, WASP-163 b and WASP-170 b
• Gaia Search for stellar Companions of TESS Objects of Interest
• Pebbles versus planetesimals: the outcomes of population synthesis models
• A planetary system with two transiting mini-Neptunes near the radius valley transition around the bright M dwarf TOI-776
• A Closer Look at Exoplanet Occurrence Rates: Considering the Multiplicity of Stars Without Detected Planets
• Gaia Search for stellar Companions of TESS Objects of Interest II
• SPECULOOS Northern Observatory: searching for red worlds in the northern skies
• Systematics-insensitive periodic signal search with K2
• GJ357: A low-mass planetary system uncovered by precision radial-velocities and dynamical simulations
• Spectral Resolution-linked Bias in Transit Spectroscopy of Extrasolar Planets
• TOI 122b and TOI 237b, two small warm planets orbiting inactive M dwarfs, found by \textit{TESS}
• An Earth-sized Planet around an M5 Dwarf Star at 22 pc

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