KIC 4150611: A quadruply eclipsing heptuple star system with a g-mode period-spacing pattern Eclipse modelling of the triple and spectroscopic analysis
arXiv:2406.04131 · doi:10.1051/0004-6361/202450390
Abstract
KIC 4150611 is a high-order multiple composed of a triple system composed of the F1V primary (Aa), which is eclipsed on a 94.2d period by a tight 1.52d binary composed of two dim K/M dwarfs (Ab1, Ab2), which also eclipse each other; an 8.65d eccentric, eclipsing binary composed of two G stars (Ba, Bb); and another faint eclipsing binary composed of two stars of unknown spectral type (Ca and Cb). In addition to its many eclipses, the system is an SB3 spectroscopic multiple (Aa, Ba, and Bb) and the primary (Aa) is a hybrid pulsator. We employ a novel photometric analysis of the complicated eclipse geometry of Aa to obtain orbital and stellar properties of the triple. We acquired 51 TRES spectra at the Fred L. Whipple Observatory, calculating radial velocities and orbital elements of Aa (SB1) and the B binary (SB2). These spectra and radial velocities are used to perform spectral disentangling for Aa, Ba, and Bb. Spectral modelling is applied to the disentangled spectrum of Aa to obtain atmospheric properties. We obtain precise stellar properties of the triple, including the mass ratios (MAa/(MAb1 + MAb2) = 3.61 +/- 0.01, MAb1/MAb2 = 1.113 +/- 0.001), separation ratio (aAab/aAb1Ab2 = 21.81 +/- 0.01), orbital periods (PAab = 94.29486 +/- 0.00008d, PAb1Ab2 = 1.522248 +/- 0.000001d), and stellar radii (RAa = 1.64 +/- 0.06 Rsun, RAb1 = 0.42 +/- 0.01 Rsun, RAb2 = 0.38 +/- 0.01 Rsun). Radial velocity fitting and spectral disentangling arrive at orbital elements for Aa, Ba, and Bb in excellent agreement with each other and with previous results in the literature. Spectral modelling on the disentangled spectrum of Aa provides constraints on the effective temperature (Teff = 7280 +/- 70 K), surface gravity (log(g) = 4.14 +/- 0.18 dex), micro-turbulent velocity (vmicro = 3.61 +/- 0.19 km s-1), rotation velocity (v sin i = 127 +/- 4 km s-1), and metallicity ([M/H] = -0.23 +/- 0.06).
References in corpus (41)
- emcee: The MCMC Hammer
- A new extensive library of PHOENIX stellar atmospheres and synthetic spectra
- REBOUND: An open-source multi-purpose N-body code for collisional dynamics
- IAS15: A fast, adaptive, high-order integrator for gravitational dynamics, accurate to machine precision over a billion orbits
- Kepler Eclipsing Binary Stars. I. Catalog and Principal Characterization of 1879 Eclipsing Binaries in the First Data Release
- Kepler Eclipsing Binary Stars. VII. The Catalog of Eclipsing Binaries Found in the Entire Kepler Data-Set
- Probing the interior physics of stars through asteroseismology
- Physics Of Eclipsing Binaries. II. Towards the Increased Model Fidelity
- Physics of Eclipsing Binaries. V. General Framework for Solving the Inverse Problem
- The interior rotation of a sample of gamma Doradus stars from ensemble modelling of their gravity mode period spacings
- General Cosmography Model with Spatial Curvature
- Internal mixing of rotating stars inferred from dipole gravity modes
- KIC 4544587: an Eccentric, Short Period Binary System with delta Sct Pulsations and Tidally Excited Modes
- FM stars: A Fourier view of pulsating binary stars, a new technique for measuring radial velocities photometrically
- The evolution of stellar triples: The most common evolutionary pathways
- Spectroscopic survey of Kepler stars. I. HERMES/Mercator observations of A- and F-type stars
- Grid Search in Stellar Parameters: a software for spectrum analysis of single stars and binary systems
- Forward asteroseismic modeling of stars with a convective core from gravity-mode oscillations: parameter estimation and stellar model selection
- Physics of Eclipsing Binaries. III. Spin-Orbit Misalignment
- Stellar triples on the edge; Comprehensive overview of the evolution of destabilised triples leading to stellar and binary exotica
- Physics of Eclipsing Binaries. IV. The impact of interstellar extinction on the light curves of eclipsing binaries
- Binary Asteroseismic Modelling: isochrone-cloud methodology and application to Kepler gravity-mode pulsators
- KIC 10080943: a binary star with two Doradus/ Scuti hybrid pulsators. Analysis of the g modes
- Constraining stellar evolution theory with asteroseismology of Doradus stars using deep learning
- Multiple Stellar Evolution: a population synthesis algorithm to model the stellar, binary, and dynamical evolution of multiple-star systems
- Chemical evolution of high-mass stars in close binaries. II. The evolved component of the eclipsing binary V380 Cygni
- TIC 168789840: A Sextuply-Eclipsing Sextuple Star System
- KIC 4142768: An Evolved Gamma Doradus/Delta Scuti Hybrid Pulsating Eclipsing Binary with Tidally Excited Oscillations
- The effect of tides on near-core rotation: analysis of 35 Kepler Doradus stars in eclipsing and spectroscopic binaries
- Six New Compact Triply Eclipsing Triples Found With TESS
- Constrained fitting of disentangled binary spectra: application to V615 Per in the open cluster h Persei
- Algebraic and machine learning approach to hierarchical triple-star stability
- 97 Eclipsing Quadruple Star Candidates Discovered in TESS Full Frame Images
- A comparison of the dynamical and model-derived parameters of the pulsating eclipsing binary KIC9850387
- KIC 4150611: a rare multi-eclipsing quintuple with a hybrid pulsator
- A Study of Nine Triply Eclipsing Triples
- 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
- Tidally perturbed g-mode pulsations in a sample of close eclipsing binaries
- Pandora: A fast open-source exomoon transit detection algorithm
- Dynamical parallax, physical parameters and evolutionary status of the components of the bright eclipsing binary α Draconis
- The near-core rotation of HD 112429: a gamma Doradus star with TESS photometry and legacy spectroscopy