Solar-like oscillations in the G8 V star tau Ceti

Abstract

We used HARPS to measure oscillations in the low-mass star tau Cet. Although the data were compromised by instrumental noise, we have been able to extract the main features of the oscillations. We found tau Cet to oscillate with an amplitude that is about half that of the Sun, and with a mode lifetime that is slightly shorter than solar. The large frequency separation is 169 muHz, and we have identified modes with degrees 0, 1, 2, and 3. We used the frequencies to estimate the mean density of the star to an accuracy of 0.45% which, combined with the interferometric radius, gives a mass of 0.783 +/- 0.012 M_sun (1.6%).

arXiv commentaccepted for publication in A&A

References in corpus (26)

• ADIPLS -- the Aarhus adiabatic oscillation package
• Correcting stellar oscillation frequencies for near-surface effects
• Detection Limits from the McDonald Observatory Planet Search Program
• ASTEC -- the Aarhus STellar Evolution Code
• Solar-like oscillations in alpha Centauri B
• Accurate fundamental parameters for Lower Main Sequence Stars
• Solar-like Oscillations (Invited Review)
• Asteroseismology and Interferometry
• The amplitude of solar oscillations using stellar techniques
• Constraining the difference in convective blueshift between the components of alpha Cen with precise radial velocities
• Excitation of solar-like oscillations across the HR diagram
• Oscillation frequencies and mode lifetimes in alpha Centauri A
• Ultra-high-precision velocity measurements of oscillations in alpha Cen A
• Solar-like oscillations in the G2 subgiant beta Hydri from dual-site observations
• On-line determination of stellar atmospheric parameters Teff, log g, [Fe/H] from ELODIE echelle spectra. II - The library of F5 to K7 stars
• A near-infrared interferometric survey of debris disk stars. I. Probing the hot dust content around epsilon Eridani and tau Ceti with CHARA/FLUOR
• Asteroseismology of alpha Cen A. Evidence of rotational splitting
• The complementary roles of interferometry and asteroseismology in determining the mass of solar-type stars
• A near-infrared interferometric survey of debris-disc stars. V. PIONIER search for variability
• Models of alpha Centauri A and B with and without seismic constraints: time dependence of the mixing-length parameter
• Asteroseismology with the Kepler mission
• Solar-like oscillations in the metal-poor subgiant nu Indi: constraining the mass and age using asteroseismology
• Asteroseismology of the visual binary 70 Ophiuchi
• Solar-like oscillations in the metal-poor subgiant nu Indi: II. Acoustic spectrum and mode lifetime
• The Current Status of Asteroseismology
• Observing solar-like oscillations

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• The relation between $\Delta \nu$ and ${\nu }_{max}$ for solar-like oscillations
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• The planet search programme at the ESO CES and HARPS. IV. The search for Jupiter analogues around solar-like stars
• Mode lifetimes of stellar oscillations - Implications for asteroseismology
• Automatic Determination of Stellar Parameters via Asteroseismology of Stochastically Oscillating Stars: Comparison with Direct Measurements
• Signals embedded in the radial velocity noise. Periodic variations in the tau Ceti velocities
• Radial Velocity Fitting Challenge. I. Simulating the data set including realistic stellar radial-velocity signals
• A 20-Second Cadence View of Solar-Type Stars and Their Planets with TESS: Asteroseismology of Solar Analogs and a Re-characterization of pi Men c
• Asteroseismic diagrams from a survey of solar-like oscillations with Kepler
• Effective temperatures, rotational velocities, microturbulent velocities and abundances in the atmospheres of the Sun,. HD1835 and HD10700
• Angular Diameters and Effective Temperatures of Twenty-five K Giant Stars from the CHARA Array
• First Detection of Thermal Radio Emission from Solar-Type Stars with the Karl G. Jansky Very Large Array
• The diameter of the CoRoT target HD 49933. Combining the 3D limb darkening, asteroseismology, and interferometry
• Assessing the accuracy of the gravity determination in late-type stars with solar-like pulsators
• The Chemical Composition of τ Ceti and Possible Effects on Terrestrial Planets
• Predicting radial-velocity jitter induced by stellar oscillations based on Kepler data
• Radii of Rapidly-Rotating Stars, with Application to Transiting-Planet Hosts
• On the interpretation of echelle diagrams for solar-like oscillations. Effect of centrifugal distortion
• Evidence for at least three planet candidates orbiting HD20794
• NPOI Measurements of Ten Stellar Oscillators
• HD 46375: seismic and spectropolarimetric analysis of a young Sun hosting a Saturn-like planet
• The most common habitable planets - atmospheric characterization of the subgroup of fast rotators
• Asteroseismic modelling of the metal-poor star Tau Ceti
• Amplitudes of solar-like oscillations in red-giant stars: Evidences for non-adiabatic effects using CoRoT observations
• Constraints on Magnetic Braking from the G8 Dwarf Stars 61 UMa and $\tau$ Cet
• An Integrated Analysis with Predictions on the Architecture of the tau Ceti Planetary System, Including a Habitable Zone Planet
• Expanding the frontiers of cool-dwarf asteroseismology with ESPRESSO. Detection of solar-like oscillations in the K5 dwarf $\epsilon$ Indi
• OGLE-2017-BLG-1186: first application of asteroseismology and Gaussian processes to microlensing
• Luminaries in the Sky: The TESS Legacy Sample of Bright Stars. I. Asteroseismic detections in naked-eye main-sequence and sub-giant solar-like oscillators
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• Benefits of multiple sites for asteroseismic detections
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• Pushing the Limit of Asteroseismic Detection for Cool Dwarfs using TESS and Deep Learning
• Eighteen Exoplanet Host Stars from the NPOI Data Archive
• Extrasolar Planets Orbiting Active Stars