A beta Cephei pulsator and a changing orbital inclination in the high-mass eclipsing binary system VV Orionis
arXiv:2012.03947 · doi:10.1093/mnrasl/slaa197
Abstract
We present an analysis of the high-mass eclipsing binary system VV Ori based on photometry from the TESS satellite. The primary star (B1V, 9.5 Msun) shows beta Cephei pulsations and the secondary (B7V, 3.8 Msun) is possibly a slowly-pulsating B star. We detect 51 significant oscillation frequencies, including two multiplets with separations equal to the orbital frequency, indicating that the pulsations are tidally perturbed. We analyse the TESS light curve and published radial velocities to determine the physical properties of the system. Both stars are only the second of their pulsation type with a precisely-measured mass. The orbital inclination is also currently decreasing, likely due to gravitational interactions with a third body.
Accepted for publication as a Letter in MNRAS. 5 pages, 3 colour figures, 1 table
References in corpus (15)
- The Transiting Exoplanet Survey Satellite
- Binary interaction dominates the evolution of massive stars
- Pre-Supernova Evolution of Massive Single and Binary Stars
- A distance to the Large Magellanic Cloud that is precise to one per cent
- Homogeneous studies of transiting extrasolar planets. I. Light curve analyses
- An asteroseismic study of the beta Cephei star theta Ophiuchi: constraints on global stellar parameters and core overshooting
- A unifying explanation of complex frequency spectra of gamma Dor, SPB and Be stars: combination frequencies and highly non-sinusoidal light curves
- Heartbeat Stars, Tidally Excited Oscillations, and Resonance Locking
- Variability of OB stars from TESS southern Sectors 1-13 and high-resolution IACOB and OWN spectroscopy
- Diverse Variability of O and B Stars Revealed from 2-minute Cadence Light Curves in Sectors 1 and 2 of the TESS Mission: Selection of an Asteroseismic Sample
- The single-sided pulsator CO~Camelopardalis
- Discovery of Cep pulsations in the eclipsing binary V453 Cygni
- Tidally Trapped Pulsations in Binary Stars
- Observational studies of early-type binary stars: VV Orionis
- BRITE-Constellation photometry of $\bpi^5$ Orionis, an ellipsoidal SPB variable
Cited by in corpus (14)
- An all-sky sample of intermediate- to high-mass OBA-type eclipsing binaries observed by TESS
- Gaia Data Release 3: Cross-match of Gaia sources with variable objects from the literature
- High-mass pulsators in eclipsing binaries observed using TESS
- Eclipsing Systems with Pulsating Components (Types β Cep, δ Sct, γ Dor or Red Giant) in the Era of High-Accuracy Space Data
- Tidally Tilted Pulsations in HD 265435, a subdwarf B Star with a Close White Dwarf Companion
- Tidally perturbed g-mode pulsations in a sample of close eclipsing binaries
- Four bright eclipsing binaries with gamma Doradus pulsating components: CM Lac, MZ Lac, RX Dra and V2077 Cyg
- Tidally Perturbed Oblique Pulsations in the Hierarchical Triple System V1031 Orionis
- Analysis of high-resolution FEROS spectroscopy for a sample of variable B-type stars assembled from TESS photometry
- Statistical view of orbital circularisation with 14 000 characterised TESS eclipsing binaries
- Tidal perturbations and eclipse mapping in the pulsations in the hierarchical triple system U~Gru
- Absolute Parameters of Young Stars: V Puppis
- V456 Cyg: An eclipsing binary with tidally perturbed g-mode pulsations
- New Massive Contact Twin Binary in a Radio-quiet HII Region Associated with the M17 Complex