Tidally Induced Pulsations in Kepler Eclipsing Binary KIC 3230227

Abstract

KIC 3230227 is a short period ($P\approx 7.0$ days) eclipsing binary with a very eccentric orbit ($e=0.6$). From combined analysis of radial velocities and {\it Kepler} light curves, this system is found to be composed of two A-type stars, with masses of $M_1=1.84\pm 0.18M_{\odot }$, $M_2=1.73\pm 0.17M_{\odot }$ and radii of $R_1=2.01\pm 0.09R_{\odot }$, $R_2=1.68\pm 0.08R_{\odot }$ for the primary and secondary, respectively. In addition to an eclipse, the binary light curve shows a brightening and dimming near periastron, making this a somewhat rare eclipsing heartbeat star system. After removing the binary light curve model, more than ten pulsational frequencies are present in the Fourier spectrum of the residuals, and most of them are integer multiples of the orbital frequency. These pulsations are tidally driven, and both the amplitudes and phases are in agreement with predictions from linear tidal theory for $l=2,m=-2$ prograde modes.

ApJ accepted

References in corpus (28)

• The chemical composition of the Sun
• Modules for Experiments in Stellar Astrophysics (MESA)
• Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars
• Kepler Eclipsing Binary Stars. I. Catalog and Principal Characterization of 1879 Eclipsing Binaries in the First Data Release
• GYRE: An open-source stellar oscillation code based on a new Magnus Multiple Shooting Scheme
• Kepler Eclipsing Binary Stars. VII. The Catalog of Eclipsing Binaries Found in the Entire Kepler Data-Set
• Kepler Eclipsing Binary Stars. II. 2165 Eclipsing Binaries in the Second Data Release
• The Kepler characterization of the variability among A- and F-type stars. I. General overview
• A Class of Eccentric Binaries with Dynamic Tidal Distortions Discovered with Kepler
• KOI-54: The Kepler Discovery of Tidally-Excited Pulsations and Brightenings in a Highly Eccentric Binary
• KIC 4544587: an Eccentric, Short Period Binary System with delta Sct Pulsations and Tidally Excited Modes
• Dynamical Tides in Eccentric Binaries and Tidally-Excited Stellar Pulsations in KEPLER KOI-54
• Pulsating red giant stars in eccentric binary systems discovered from Kepler space-based photometry
• A heuristic derivation of the uncertainty of the frequency determination in time series data
• Tidal asteroseismology: Kepler's KOI-54
• Spectroscopic survey of Kepler stars. I. HERMES/Mercator observations of A- and F-type stars
• Tidal Excitation of Modes in Binary Systems with Applications to Binary Pulsars
• Discovery and analysis of p-mode and g-mode oscillations in the A-type primary of the eccentric binary HD 209295
• Surface Activity and Oscillation Amplitudes of Red Giants in Eclipsing Binaries
• Red Giants in Eclipsing Binary and Multiple-Star Systems: Modeling and Asteroseismic Analysis of 70 Candidates from Kepler Data
• A Catalogue of Temperatures for Kepler Eclipsing Binary Stars
• HD 174884: a strongly eccentric, short-period early-type binary system discovered by CoRoT
• Radial velocity monitoring of Kepler heartbeat stars
• An instability due to the nonlinear coupling of p-modes to g-modes: Implications for coalescing neutron star binaries
• KIC 3749404: A heartbeat Star with Rapid Apsidal Advance Indicative of a Tertiary Component
• Kepler Eclipsing Binaries with $\delta$ Scuti/$\gamma$ Doradus Pulsating Components 1: KIC 9851944
• It takes a village to raise a tide: nonlinear multiple-mode coupling and mode identification in KOI-54
• Photometric mode identification methods of nonradial pulsations in eclipsing binaries I. -- Dynamic Eclipse Mapping

Cited by in corpus (27)

• Probing the interior physics of stars through asteroseismology
• The mass discrepancy in intermediate- and high-mass eclipsing binaries: the need for higher convective core masses
• The Most Massive Heartbeat: An In-depth Analysis of ι Orionis
• KIC 4142768: An Evolved Gamma Doradus/Delta Scuti Hybrid Pulsating Eclipsing Binary with Tidally Excited Oscillations
• Massive heartbeat stars from TESS. I. TESS sectors 1-16
• KIC 8262223: A Post-Mass Transfer Eclipsing Binary Consisting of a Delta Scuti Pulsator and a Helium White Dwarf Precursor
• Gravity Modes Reveal the Internal Rotation of a Post-mass Transfer Gamma Doradus/Delta Scuti Hybrid Pulsator in Kepler Eclipsing Binary KIC 9592855
• Tidally Excited Oscillations in Heartbeat Binary Stars: Pulsation Phases and Mode Identification
• Accelerated Tidal Circularization Via Resonance Locking in KIC 8164262
• Tango of celestial dancers: A sample of detached eclipsing binary systems containing g-mode pulsating components. A case study of KIC9850387
• $\epsilon$ Lupi: measuring the heartbeat of a doubly-magnetic massive binary with BRITE-Constellation
• A New Window to Tidal Asteroseismology: Non-linearly Excited Stellar Eigenmodes and the Period Spacing Pattern in KOI-54
• Tidal Asteroseismology: Possible Evidence of Non-linear Mode Coupling in an Equilibrium State in Kepler Eclipsing Binary KIC 3230227
• Four bright eclipsing binaries with gamma Doradus pulsating components: CM Lac, MZ Lac, RX Dra and V2077 Cyg
• BRITE-Constellation reveals evidence for pulsations in the enigmatic binary $\eta$ Carinae
• Tidally Perturbed Oblique Pulsations in the Hierarchical Triple System V1031 Orionis
• Statistical view of orbital circularisation with 14 000 characterised TESS eclipsing binaries
• KOI-3890: A high mass-ratio asteroseismic red-giant$+$M-dwarf eclipsing binary undergoing heartbeat tidal interactions
• Study of Chemically Peculiar Stars-I : High-resolution Spectroscopy and K2 Photometry of Am Stars in the Region of M44
• V456 Cyg: An eclipsing binary with tidally perturbed g-mode pulsations
• Stellar rotation rates in Kepler eccentric (heartbeat) binaries obtained from r-mode signatures
• Detection of Tidally Excited Oscillations in Kepler Heartbeat Stars
• Multiple variability time-scales of the early nitrogen-rich Wolf-Rayet star WR7
• Twenty-three New Heartbeat Star Systems Discovered Based on TESS Data
• KIC 7914906: An Eclipsing Heartbeat Star with Tidally Excited Oscillations and Gamma Doradus/Delta Scuti Hybrid Pulsations
• Heartbeat Stars Recognition Based on Recurrent Neural Networks: Method and Validation
• Detailed Characterization of Heartbeat Stars and their Tidally Excited Oscillations