Dynamical mass of a solar-like oscillator at the main-sequence turnoff from Gaia astrometry & ground-based spectroscopy

Abstract

Asteroseismology is widely used for precise determining of masses of solar-like oscillating stars by performing individual-frequency modeling or applying homological scaling relations. However, these methods lack dynamical validation on the main sequence due to the absence of eclipsing double-lined binary system (SB2) as benchmark objects. By providing the orbital inclination, astrometric binary systems from ESA Gaia DR3 offer an abundant alternative for eclipsing systems. We present KIC693187 as the first SB2, hosting a solar-like oscillating post-main-sequence star with dynamical masses. By combining Gaia astrometry with spectroscopic obtained with the Las Cumbres Observatory network (LCO), we find $M_1^{\mathrm{dyn}}$=0.99$\pm$0.05$M_{\odot }$ and $M_2^{\mathrm{dyn}}$=0.89$\pm$0.04$M_{\odot }$ for the primary and secondary, respectively. Asteroseismic parameters were extracted from photometry of the NASA \Kepler satellite. The mass from individual frequency modeling is $M_1^{\mathrm{IF}}$=0.92$\pm$0.01$M_{\odot }$. Taking into account the systematic uncertainty of 0.04$M_{\odot }$ for best fit models from individual frequency fitting, we find an agreement within 1.2$\sigma$. From scaling relations we obtain a mass range of 0.93 to 0.98$M_{\odot }$ by using the observed large frequency separations (\dnu) in the scaling relations for the primary. By using standard corrections for departures from the asymptotic regime of \dnu, we obtained a mass range of 0.83 to 1.03$M_{\odot }$. The upper ends of both ranges agree well with the dynamical mass of the primary. This approach provides the first empirical validation for main-sequence solar-like oscillators and opens a new window for validating asteroseismology. Through a dedicatded program targeting astrometric SB2 binary systems, ESA's PLATO space mission will provide will enlarge the benchmark sample substantially.

accepted for publication as Letter in Astronomy&Astrophysics (4+5 pages, 5 figures)

References in corpus (58)

• emcee: The MCMC Hammer
• The Gaia mission
• Modules for Experiments in Stellar Astrophysics (MESA)
• Gaia Data Release 3: Summary of the content and survey properties
• The K2 Mission: Characterization and Early results
• Accurate masses and radii of normal stars: modern results and applications
• Las Cumbres Observatory Global Telescope Network
• Mind your Ps and Qs: the Interrelation between Period (P) and Mass-ratio (Q) Distributions of Binary Stars
• Modules for Experiments in Stellar Astrophysics (MESA): Time-Dependent Convection, Energy Conservation, Automatic Differentiation, and Infrastructure
• ADIPLS -- the Aarhus adiabatic oscillation package
• Asteroseismic fundamental properties of solar-type stars observed by the NASA Kepler Mission
• Preparation of Kepler lightcurves for asteroseismic analyses
• Gaia Data Release 3: Stellar multiplicity, a teaser for the hidden treasure
• Asteroseismology of red giants from the first four months of Kepler data: Fundamental parameters
• Determining stellar macroturbulence using asteroseismic rotational velocities from Kepler
• Solar-like oscillations in alpha Centauri B
• Determining global parameters of the oscillations of solar-like stars
• The relation between $\Delta \nu$ and ${\nu }_{max}$ for solar-like oscillations
• Stellar population synthesis based modelling of the Milky Way using asteroseismology of 13000 Kepler red giants
• A uniform asteroseismic analysis of 22 solar-type stars observed by Kepler
• Asteroseismology of the solar analogs 16 Cyg A & B from Kepler observations
• Testing the asteroseismic scaling relations for Red Giants with Eclipsing Binaries Observed by Kepler
• Atomic data for the Gaia-ESO Survey
• Asteroseismology of solar-type stars
• Asteroseismology for "à la carte" stellar age-dating and weighing: Age and mass of the CoRoT exoplanet host HD 52265
• Properties of 42 Solar-type Kepler Targets from the Asteroseismic Modeling Portal
• Asymptotic and measured large frequency separations
• Measuring the vertical age structure of the Galactic disc using asteroseismology and SAGA
• Surface rotation and photometric activity for Kepler targets. II. G and F main-sequence stars, and cool subgiant stars
• The First APOKASC Catalog of Kepler Dwarf and Subgiant Stars
• Impact on asteroseismic analyses of regular gaps in Kepler data
• Gap interpolation by inpainting methods : Application to Ground and Space-based Asteroseismic data
• Atmospheric Parameters of 169 F, G, K and M-type Stars in the Kepler Field
• Characterizing solar-type stars from full-length Kepler data sets using the Asteroseismic Modeling Portal
• Lithium abundances in CEMP stars
• APOKASC-3: The Third Joint Spectroscopic and Asteroseismic catalog for Evolved Stars in the Kepler Fields
• 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
• Mg line formation in late-type stellar atmospheres: II. Calculations in a grid of 1D models
• BACCHUS Analysis of Weak Lines in APOGEE Spectra (BAWLAS)
• Probing the deep end of the Milky Way with \emph{Kepler}: Asteroseismic analysis of 854 faint Red Giants misclassified as Cool Dwarfs
• NLTE line formation for Mg\ione\ and Mg\ii\ in atmospheres of B-A-F-G-K stars
• Asteroseismology of 3,642 Kepler Red Giants: Correcting the Scaling Relations based on Detailed Modeling
• Spectroscopic and seismic analysis of red giants in eclipsing binaries discovered by Kepler
• Kepler Observations of the Asteroseismic Binary HD 176465
• Lithium abundance and rotation of seismic solar analogues - Solar and stellar connection from Kepler and Hermes observations
• A prescription for the asteroseismic surface correction
• Detections of solar-like oscillations in dwarfs and subgiants with Kepler DR25 short-cadence data
• ROOSTER: a machine-learning analysis tool for Kepler stellar rotation periods
• On the Identification of Wide Binaries in the Kepler Field
• High-mass eclipsing binaries: a testbed for models of interior structure and evolution -- Accurate fundamental properties and surface chemical composition for V1034 Sco, GL Car, V573 Car and V346 Cen
• Deciphering stellar chorus: apollinaire, a Python 3 module for Bayesian peakbagging in helio- and asteroseismology
• Influence of magnetic activity on the determination of stellar parameters through asteroseismology
• Kepler meets Gaia DR3: homogeneous extinction-corrected color-magnitude diagram and binary classification
• Mirror principle and the red-giant bump: the battle of entropy in low-mass stars
• A Distant Mirror: Solar Oscillations Observed on Neptune by the Kepler K2 Mission
• Multi-campaign Asteroseismic Analysis of eight Solar-like pulsating stars observed by the K2 mission
• Dealing with large gaps in asteroseismic time series
• Advancing accuracy in age determinations of old-disk stars using an oscillating red giant in an eclipsing binary