Detection of Solar-like Oscillations in the G7 Giant Star xi Hya

Abstract

We report the firm discovery of solar-like oscillations in a giant star. We monitored the star xi Hya (G7III) continuously during one month with the CORALIE spectrograph attached to the 1.2m Swiss Euler telescope. The 433 high-precision radial-velocity measurements clearly reveal multiple oscillation frequencies in the range 50 - 130 uHz, corresponding to periods between 2.0 and 5.5 hours. The amplitudes of the strongest modes are slightly smaller than 2 m/s. Current model calculations are compatible with the detected modes.

4 pages, 4 figures, accepted for publication as a letter in A&A

References in corpus (3)

• Oscillations of alpha UMa and other red giants
• P-mode observations on Alpha Cen A
• Evidence for solar-like oscillations in beta Hydri

Cited by in corpus (96)

• Probing the interior physics of stars through asteroseismology
• Gaia FGK Benchmark Stars: Effective temperatures and surface gravities
• Asteroseismology of red giants from the first four months of Kepler data: Fundamental parameters
• Asteroseismic classification of stellar populations among 13000 red giants observed by Kepler
• Solar-like oscillations in low-luminosity red giants: first results from Kepler
• Red-giant seismic properties analyzed with CoRoT
• The relation between $\Delta \nu$ and ${\nu }_{max}$ for solar-like oscillations
• Characterization of the power excess of solar-like oscillations in red giants with Kepler
• Planets around evolved intermediate-mass stars. I. Two substellar companions in the open clusters NGC 2423 and NGC 4349
• Accurate fundamental parameters for 23 bright solar-type stars
• Theoretical amplitudes and lifetimes of non-radial solar-like oscillations in red giants
• Angular momentum transport in stellar interiors constrained by rotational splittings of mixed modes in red giants
• Asteroseismology of red giants from the first four months of Kepler data: Global oscillation parameters for 800 stars
• Giant star seismology
• The fundamental definition of 'radial velocity'
• Dynamical Mass of the Substellar Benchmark Binary HD 130948BC
• Solar-like Oscillations (Invited Review)
• Asteroseismology and Interferometry
• Pulsating red giant stars in eccentric binary systems discovered from Kepler space-based photometry
• Oscillating K giants with the WIRE satellite: determination of their asteroseismic masses
• Planetary Companions around Three Intermediate-Mass G and K Giants: 18 Del, xi Aql, and HD 81688
• The quest for the solar g modes
• A substellar companion around the intermediate-mass giant star HD 11977
• Precise Radial Velocities of Giant Stars II. Pollux and its Planetary Companion
• Evidence for a sharp structure variation inside a red-giant star
• Seismic diagnostics of red giants: first comparison with stellar models
• Structural glitches near the cores of red giants revealed by oscillations in g-mode period spacings from stellar models
• Interaction Between Convection and Pulsation
• Amplitudes and lifetimes of solar-like oscillations observed by CoRoT* Red-giant versus main-sequence stars
• Planetary companions around the K giant stars 11 UMi and HD 32518
• VLTI/VINCI diameter constraints on the evolutionary status of delta Eri, xi Hya, eta Boo
• Multisite campaign on the open cluster M67. II. Evidence for solar-like oscillations in red giant stars
• Study of KIC 8561221 observed by Kepler: an early red giant showing depressed dipolar modes
• Interferometric diameters of five evolved intermediate-mass planet-hosting stars measured with PAVO at the CHARA Array
• p-mode frequencies in solar-like stars : I. Procyon A
• Oscillation mode lifetimes in ksi Hydrae: Will strong mode damping limit asteroseismology of red giant stars?
• Angular Diameters and Effective Temperatures of Twenty-five K Giant Stars from the CHARA Array
• Pulsations detected in the line profile variations of red giants: Modelling of line moments, line bisector and line shape
• Period-luminosity relations of pulsating M giants in the solar neighbourhood and the Magellanic Clouds
• Solar-like oscillations from the depths of the red-giant star KIC 4351319 observed with Kepler
• Atmospheric parameters and chemical properties of red giants in the CoRoT asteroseismology fields
• Oscillations in Arcturus from WIRE photometry
• Assessing the accuracy of the gravity determination in late-type stars with solar-like pulsators
• Gaussian Process Modelling of Asteroseismic Data
• Simulating stochastically excited oscillations. The mode lifetime of xi Hya
• PEPSI deep spectra. II. Gaia benchmark stars and other M-K standards
• Asteroseismic masses of retired planet-hosting A-stars using SONG
• Photometric Oscillations of Low Luminosity Red Giant Stars
• Surface convection and red giants radii measurements
• How accurate are stellar ages based on stellar models? II. The impact of asteroseismology
• Beyond the Main Sequence: Testing the accuracy of stellar masses predicted by the PARSEC evolutionary tracks
• Stellar oscillations. II The non-adiabatic case
• The Discovery of Stellar Oscillations in the K Giant $\iota$ Dra
• The Discovery of Stellar Oscillations in the Planet Hosting Giant Star Beta Geminorum
• Asteroseismology
• Solar-like oscillations in a metal-poor globular cluster with the HST
• Asteroseismology of red giants: photometric observations of Arcturus by SMEI
• Precise radial velocities of giant stars VI. A possible 2:1 resonant planet pair around the K giant star $\eta$ Cet
• Modeling Kepler Observations of Solar-like Oscillations in the Red-giant Star HD 186355
• Detection of solar-like oscillations in the bright red giant stars $\gamma$ Psc and ${\theta }^1$ Tau from a 190-day high-precision spectroscopic multisite campaign
• Modeling beta Virginis using seismological data
• New asteroseismic scaling relations based on Hayashi track relation applied to red-giant branch stars in NGC 6791 and NGC 6819
• Amplitudes of solar-like oscillations in red-giant stars: Evidences for non-adiabatic effects using CoRoT observations
• Asteroseismology and interferometry of the red giant star epsilon Oph
• HD-TESS: An Asteroseismic Catalog of Bright Red Giants within TESS Continuous Viewing Zones
• Multi-site campaign on the open cluster M67. I. Observations and photometric reductions
• CORALIE radial-velocity search for companions around evolved stars (CASCADES). I. Sample definition and first results: Three new planets orbiting giant stars
• CoRoT and Kepler results: Solar-like oscillators
• A search for solar-like oscillations in K giants in the globular cluster M4
• Asteroseismic masses of four evolved planet-hosting stars using SONG and TESS: resolving the retired A-star mass controversy
• Convection and oscillations
• Stellar masses from granulation and oscillations of 23 bright red giants observed by BRITE - Constellation
• The effects of stellar population synthesis on the distributions of the asteroseismic observables ν_max and Δν of red-clump stars
• Constraining the core-rotation rate in red-giant stars from Kepler space photometry
• Asteroseismic modelling strategies in the PLATO era I. Mean density inversions and direct treatment of the seismic information
• Line-profile variations of stochastically excited oscillations in four evolved stars
• The discovery of a planetary candidate around the evolved low-mass Kepler giant star HD 175370
• Asteroseismology of red giant stars
• Coralie radial-velocity search for companions around evolved stars (CASCADES) III. A new Jupiter host-star: in-depth analysis of HD 29399 using TESS data
• Asteroseismology of evolved stars with EGGMiMoSA I. Theoretical mixed-mode patterns from the subgiant to the RGB phase
• Characteristics of solar-like oscillations of secondary red clump stars
• Spectroscopic and Interferometric Measurements of Nine K Giant Stars
• Inference from adiabatic analysis of solar-like oscillations in Red giants
• Using Asteroseismology to Calibrate the Physical Parameters of Confirmed Exoplanets and Their Evolved Host Stars
• Asteroseismic Inversions for Internal Sound Speed Profiles of Main-sequence Stars with Radiative Cores
• Radial oscillations of boson stars made of ultralight repulsive dark matter
• Observations and interpretation of solar-like oscillations in red-giant stars
• The stellar activity-rotation-age relationship under the lens of asteroseismology
• Acoustic modes of pulsating axion stars: Non-radial oscillations
• Red giant seismology: observations
• An observer's view on the future of asteroseismology
• Asteroseismic modelling of main-sequence solar-like stars and Kepler exoplanet host stars with the FICO procedure I. Catalogue of fundamental stellar properties
• Companions to Kepler giant stars: A long-period eccentric substellar companion to KIC 3526061 and a stellar companion to HD 187878
• Impact of rotational mixing on the global and asteroseismic properties of red giants
• Aspects of observational red giant population seismology
• A line profile analysis of the pulsating red giant star epsilon Ophiuchi (G9.5III)