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%).

accepted for publication in A&A

References in corpus (18)

• 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
• Accurate fundamental parameters for Lower Main Sequence Stars
• Asteroseismology and Interferometry
• The amplitude of solar oscillations using stellar techniques
• Excitation of solar-like oscillations across the HR diagram
• 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
• 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
• Solar-like oscillations in the metal-poor subgiant nu Indi: constraining the mass and age using asteroseismology
• Asteroseismology with the Kepler mission
• 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

Cited by in corpus (17)

• Asteroseismology of solar-type stars
• Color difference makes a difference: four planet candidates around tau Ceti
• A large sample of calibration stars for Gaia: log g from Kepler and CoRoT
• 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
• First Detection of Thermal Radio Emission from Solar-Type Stars with the Karl G. Jansky Very Large Array
• The Chemical Composition of τ Ceti and Possible Effects on Terrestrial Planets
• On the interpretation of echelle diagrams for solar-like oscillations. Effect of centrifugal distortion
• Evidence for at least three planet candidates orbiting HD20794
• HD 46375: seismic and spectropolarimetric analysis of a young Sun hosting a Saturn-like planet
• 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
• 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
• Atmospheric dispersion correction: model requirements and impact on radial velocity measurements
• Eighteen Exoplanet Host Stars from the NPOI Data Archive
• Pushing the Limit of Asteroseismic Detection for Cool Dwarfs using TESS and Deep Learning