The Physical Parameters of the Retired A Star HD185351

Abstract

We report here an analysis of the physical stellar parameters of the giant star HD185351 using Kepler short-cadence photometry, optical and near infrared interferometry from CHARA, and high-resolution spectroscopy. Asteroseismic oscillations detected in the Kepler short-cadence photometry combined with an effective temperature calculated from the interferometric angular diameter and bolometric flux yield a mean density, rho_star = 0.0130 +- 0.0003 rho_sun and surface gravity, logg = 3.280 +- 0.011. Combining the gravity and density we find Rstar = 5.35 +- 0.20 Rsun and Mstar = 1.99 +- 0.23 Msun. The trigonometric parallax and CHARA angular diameter give a radius Rstar = 4.97 +- 0.07 Rsun. This smaller radius,when combined with the mean stellar density, corresponds to a stellar mass Mstar = 1.60 +- 0.08 Msun, which is smaller than the asteroseismic mass by 1.6-sigma. We find that a larger mass is supported by the observation of mixed modes in our high-precision photometry, the spacing of which is consistent only for Mstar =~ 1.8 Msun. Our various and independent mass measurements can be compared to the mass measured from interpolating the spectroscopic parameters onto stellar evolution models, which yields a model-based mass M_star = 1.87 +- 0.07 Msun. This mass agrees well with the asteroseismic value,but is 2.6-sigma higher than the mass from the combination of asteroseismology and interferometry. The discrepancy motivates future studies with a larger sample of giant stars. However, all of our mass measurements are consistent with HD185351 having a mass in excess of 1.5 Msun.

arXiv commentApJ accepted

References in corpus (87)

• Modules for Experiments in Stellar Astrophysics (MESA)
• Validation of the new Hipparcos reduction
• Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars
• Direct Imaging of Multiple Planets Orbiting the Star HR 8799
• A large stellar evolution database for population synthesis studies. I. Scaled solar models and isochrones
• Kepler Mission Design, Realized Photometric Performance, and Early Science
• A giant planet imaged in the disk of the young star Beta Pictoris
• On the Unique Solution of Planet and Star Parameters from an Extrasolar Planet Transit Light Curve
• Kepler Input Catalog: Photometric Calibration and Stellar Classification
• Giant Planet Occurrence in the Stellar Mass-Metallicity Plane
• Gravity modes as a way to distinguish between hydrogen- and helium-burning red giant stars
• Stellar Diameters and Temperatures II. Main Sequence K & M Stars
• First Results from the CHARA Array. II. A Description of the Instrument
• Fast core rotation in red-giant stars revealed by gravity-dominated mixed modes
• Planet formation around stars of various masses: The snow line and the frequency of giant planets
• Revised Stellar Properties of Kepler Targets for the Quarter 1-16 Transit Detection Run
• Spin down of the core rotation in red giants
• Core-Accretion Model Predicts Few Jovian-Mass Planets Orbiting Red Dwarfs
• Testing Scaling Relations for Solar-Like Oscillations from the Main Sequence to Red Giants using Kepler Data
• Seismic evidence for a rapidly rotating core in a lower-giant-branch star observed with Kepler
• Structure and Evolution of Nearby Stars with Planets II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog
• Asteroseismology of old open clusters with Kepler: direct estimate of the integrated RGB mass loss in NGC6791 and NGC6819
• A Planetary Companion to gamma Cephei A
• Fundamental Properties of Kepler Planet-Candidate Host Stars using Asteroseismology
• Improved spectroscopic parameters for transiting planet hosts
• Improving Stellar and Planetary Parameters of Transiting Planet Systems: The Case of TrES-2
• A New Planet Around an M Dwarf: Revealing a Correlation Between Exoplanets and Stellar Mass
• Stellar Spin-Orbit Misalignment in a Multiplanet System
• Calculating asteroseismic diagrams for solar-like oscillations
• Retired A Stars and Their Companions: Exoplanets Orbiting Three Intermediate-Mass Subgiants
• Fundamental Properties of Stars using Asteroseismology from Kepler & CoRoT and Interferometry from the CHARA Array
• Probing the core structure and evolution of red giants using gravity-dominated mixed modes observed with Kepler
• Asteroseismic classification of stellar populations among 13000 red giants observed by Kepler
• Stellar Diameters and Temperatures III. Main Sequence A, F, G, & K Stars: Additional high-precision measurements and empirical relations
• Precise radial velocities of giant stars. III. Spectroscopic stellar parameters
• Planets around evolved intermediate-mass stars. I. Two substellar companions in the open clusters NGC 2423 and NGC 4349
• The relation between $\Delta \nu$ and ${\nu }_{max}$ for solar-like oscillations
• Red-giant seismic properties analyzed with CoRoT
• The underlying physical meaning of the ${\nu }_{\max }-{\nu }_{\mathrm{c}}$ relation
• Stellar Parameters and Elemental Abundances of Late-G Giants
• Retired A Stars and Their Companions. III. Comparing the Mass-Period Distributions of Planets Around A-Type Stars and Sun-Like Stars
• Stellar Diameters and Temperatures I. Main Sequence A, F, & G Stars
• Mixed modes in red-giant stars observed with CoRoT
• Age and helium content of the open cluster NGC 6791 from multiple eclipsing binary members. II. age dependencies and new insights
• Characteristics of solar-like oscillations in red giants observed in the CoRoT exoplanet field
• Verifying asteroseismically determined parameters of Kepler stars using hipparcos parallaxes: self-consistent stellar properties and distances
• SearchCal: a Virtual Observatory tool for searching calibrators in optical long baseline interferometry. I: The bright object case
• A precise asteroseismic age and radius for the evolved Sun-like star KIC 11026764
• The Gemini NICI Planet-Finding Campaign: The Frequency of Giant Planets around Young B and A Stars
• Asymptotic and measured large frequency separations
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• An Eccentric Hot Jupiter Orbiting the Subgiant HD 185269
• 55 Cancri: Stellar Astrophysical Parameters, a Planet in the Habitable Zone, and Implications for the Radius of a Transiting Super-Earth
• Bayesian peak-bagging of solar-like oscillators using MCMC: A comprehensive guide
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• Solar-like oscillations in red giants observed with Kepler: comparison of global oscillation parameters from different methods
• A Planetary Mass Companion to the K0 Giant HD 17092
• Astrophysical Parameters and Habitable Zone of the Exoplanet Hosting Star GJ 581
• HD 181068: A Red Giant in a Triply-Eclipsing Compact Hierarchical Triple System
• The GJ 436 System: Directly Determined Astrophysical Parameters of an M-Dwarf and Implications for the Transiting Hot Neptune
• The radius and mass of the close solar twin 18 Sco derived from asteroseismology and interferometry
• KIC 8410637: a 408-day period eclipsing binary containing a pulsating red giant
• The COBE DIRBE Point Source Catalog
• "Retired" Planet Hosts: Not So Massive, Maybe Just Portly After Lunch
• A fresh look at the seismic spectrum of HD49933: analysis of 180 days of CoRoT photometry
• Discovery of a red giant with solar-like oscillations in an eclipsing binary system from Kepler space-based photometry
• The Mass Distribution of Subgiant Planet Hosts
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• The N2K Consortium VI: Doppler Shifts Without Templates and Three New Short-Period Planets
• Properties of oscillation modes in subgiant stars observed by Kepler
• Estimates of the Planet Yield from Ground-Based High-Contrast Imaging Observations as a Function of Stellar Mass
• The Age of the Oldest Stars in the Local Galactic Disk From Hipparcos Parallaxes of G and K Subgiants
• Solar-like oscillations from the depths of the red-giant star KIC 4351319 observed with Kepler
• Retired A Stars: The Effect of Stellar Evolution on the Mass Estimates of Subgiants
• Optical Interferometry of early-type stars with PAVO@CHARA. I. Fundamental stellar properties
• Masses of subgiant stars from asteroseismology using the coupling strengths of mixed modes
• The Discovery of Stellar Oscillations in the K Giant $\iota$ Dra
• Modeling Kepler Observations of Solar-like Oscillations in the Red-giant Star HD 186355
• The Mass of the Planet-hosting Giant Star Beta Geminorum Determined from its p-mode Oscillation Spectrum
• New asteroseismic scaling relations based on Hayashi track relation applied to red-giant branch stars in NGC 6791 and NGC 6819
• Stellar Parameters and Chemical Abundances of G Giants
• Fundamental Parameters of the Exoplanet Host K Giant Star iota Draconis from the CHARA Array
• Rotation and lithium abundance of solar-analog stars. Theoretical analysis of observations

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