Characterization of the Wolf 1061 Planetary System

Abstract

A critical component of exoplanetary studies is an exhaustive characterization of the host star, from which the planetary properties are frequently derived. Of particular value are the radius, temperature, and luminosity, which are key stellar parameters for studies of transit and habitability science. Here we present the results of new observations of Wolf~1061, known to host three super-Earths. Our observations from the Center for High Angular Resolution Astronomy (CHARA) interferometric array provide a direct stellar radius measurement of $0.3207\pm 0.0088$~$R_{\odot }$, from which we calculate the effective temperature and luminosity using spectral energy distribution models. We obtained seven years of precise, automated photometry that reveals the correct stellar rotation period of $89.3\pm 1.8$~days, finds no evidence of photometric transits, and confirms the radial velocity signals are not due to stellar activity. Finally, our stellar properties are used to calculate the extent of the Habitable Zone for the Wolf~1061 system, for which the optimistic boundaries are 0.09--0.23~AU. Our simulations of the planetary orbital dynamics shows that the eccentricity of the Habitable Zone planet oscillates to values as high as $\sim$0.15 as it exchanges angular momentum with the other planets in the system.

arXiv comment11 pages, 10 figures, accepted for publication in the Astrophysical Journal

References in corpus (41)

• Validation of the new Hipparcos reduction
• Habitable Zones Around Main-Sequence Stars: New Estimates
• A terrestrial planet candidate in a temperate orbit around Proxima Centauri
• No planet for HD 166435
• How to Constrain Your M Dwarf: measuring effective temperature, bolometric luminosity, mass, and radius
• Habitable Zones Around Main-Sequence Stars: Dependence on Planetary Mass
• Stellar Diameters and Temperatures II. Main Sequence K & M Stars
• First Results from the CHARA Array. II. A Description of the Instrument
• Revised Stellar Properties of Kepler Targets for the Quarter 1-16 Transit Detection Run
• Metallicity and Temperature Indicators in M dwarf K band Spectra: Testing New & Updated Calibrations With Observations of 133 Solar Neighborhood M dwarfs
• An Earth-sized Planet in the Habitable Zone of a Cool Star
• The rotation and Galactic kinematics of mid M dwarfs in the Solar Neighborhood
• Techniques and Review of Absolute Flux Calibration from the Ultraviolet to the Mid-Infrared
• They are Small Worlds After All: Revised Properties of Kepler M Dwarf Stars and their Planets
• Rotation Velocities for M-dwarfs
• A nearby M star with three transiting super-Earths discovered by K2
• Remote Life Detection Criteria, Habitable Zone Boundaries, and the Frequency of Earthlike Planets around M and Late-K Stars
• Characterizing the Cool Kepler Objects of Interest. New Effective Temperatures, Metallicities, Masses and Radii of Low-Mass Kepler Planet-Candidate Host Stars
• SOAP. A tool for the fast computation of photometry and radial velocity induced by stellar spots
• A Catalog of Kepler Habitable Zone Exoplanet Candidates
• Stellar Diameters and Temperatures V. Eleven Newly Characterized Exoplanet Host Stars
• Stellar Diameters and Temperatures VI. High angular resolution measurements of the transiting exoplanet host stars HD 189733 and HD 209458 and implications for models of cool dwarfs
• Far Infrared Prperties of M Dwarfs
• On the Frequency of Potential Venus Analogs from Kepler Data
• Metallicity of M dwarfs IV. A high-precision [Fe/H] and Teff technique from high-resolution optical spectra for M dwarfs
• Searching for Planets in the Hyades III: The Quest for Short-Period Planets
• Precise Infrared Radial Velocities from Keck/NIRSPEC and the Search for Young Planets
• M-dwarf metallicities - A high-resolution spectroscopic study in the near infrared
• Radial Velocity Planet Detection Biases at the Stellar Rotational Period
• Revised Filter Profiles and Zero Points for Broadband Photometry
• The Impact of Stellar Rotation on the Detectability of Habitable Planets Around M Dwarfs
• Characterizing the Cool KOIs. VI. H- and K-band Spectra of Kepler M Dwarf Planet-Candidate Hosts
• The Habitable Zone and Extreme Planetary Orbits
• A 3D Search for Companions to 12 Nearby M-Dwarfs
• Three planets orbiting Wolf 1061
• The nearby population of M dwarfs with WISE: A search for warm circumstellar dust
• Metallicity determination of M dwarfs - High-resolution IR spectroscopy
• A Potential Super-Venus in the Kepler-69 System
• The Solar Neighborhood XXIX: The Habitable Real Estate of our Nearest Stellar Neighbors
• ExoCat-1: The Nearby Stellar Systems Catalog for Exoplanet Imaging Missions
• Impact of ηearth on the capabilities of affordable space missions to detect biosignatures on extrasolar planets

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• The M-dwarf Ultraviolet Spectroscopic Sample I. Determining Stellar Parameters for Field Stars