The White Dwarf Binary Pathways Survey -- VIII: a post common envelope binary with a massive white dwarf and an active G-type secondary star

Abstract

The white dwarf binary pathways survey is dedicated to studying the origin and evolution of binaries containing a white dwarf and an intermediate-mass secondary star of the spectral type A, F, G, or K (WD+AFGK). Here we present CPD-65\,264, a new post common envelope binary with an orbital period of 1.37\,days that contains a massive white dwarf ($0.86\pm 0.06{\mathrm{M}}_{\odot }$) and an intermediate-mass ($1.00\pm 0.05{\mathrm{M}}_{\odot }$) main-sequence secondary star. We characterized the secondary star and measured the orbital period using high-resolution optical spectroscopy. The white dwarf parameters are determined from HST spectroscopy. In addition, TESS observations revealed that up to 19 per cent of the surface of the secondary is covered with starspots. Small period changes found in the light curve indicate that the secondary is the second example of a G-type secondary star in a post-common envelope binary with latitudinal differential rotation. Given the relatively large mass of the white dwarf and the short orbital period, future mass transfer will be dynamically and thermally stable and the system will evolve into a cataclysmic variable. The formation of the system can be understood assuming common envelope evolution without contributions from energy sources besides orbital energy. CPD-65\,264 is the seventh post-common envelope binaries with intermediate-mass secondaries that can be understood assuming a small efficiency in the common envelope energy equation, in agreement with findings for post-common envelope binaries with M-dwarf or sub-stellar companions.

arXiv comment10 pages, 10 figures, 3 tables. Accepted for publication in MNRAS

References in corpus (48)

• emcee: The MCMC Hammer
• Modules for Experiments in Stellar Astrophysics (MESA)
• The Transiting Exoplanet Survey Satellite
• A grid of MARCS model atmospheres for late-type stars I. Methods and general properties
• Comprehensive analytic formulae for stellar evolution as a function of mass and metallicity
• Automated data reduction workflows for astronomy
• Determining stellar atmospheric parameters and chemical abundances of FGK stars with iSpec
• The RAdial Velocity Experiment (RAVE): Fourth data release
• Gaia-2MASS 3D maps of Galactic interstellar dust within 3 kpc
• A Spectroscopic Survey & Analysis of Bright, Hydrogen-Rich White Dwarfs
• On the Spectral Evolution of Hot White Dwarf Stars. I. A Detailed Model-Atmosphere Analysis of Hot White Dwarfs from SDSS DR12
• Limb and gravity-darkening coefficients for the TESS satellite at several metallicities, surface gravities, and microturbulent velocities
• Post-common-envelope binaries from SDSS. IX: Constraining the common-envelope efficiency
• Post-common-envelope binaries from SDSS. XI: The white dwarf mass distributions of CVs and pre-CVs
• Three-dimensional mapping of the local interstellar medium with composite data
• CERES: A Set of Automated Routines for Echelle Spectra
• Prospects for detection of detached double white dwarf binaries with Gaia, LSST and LISA
• Do Kepler superflare stars really include slowly-rotating Sun-like stars ? - Results using APO 3.5m telescope spectroscopic observations and Gaia-DR2 data -
• Beaming Binaries - a New Observational Category of Photometric Binary Stars
• Post-common envelope binaries from SDSS - VII: A catalogue of white dwarf-main sequence binaries
• Post common envelope binaries from SDSS. XII: The orbital period distribution
• The delay time distribution of type Ia supernovae: a comparison between theory and observation
• Post-common envelope binaries from SDSS - XIV. The DR7 white dwarf-main sequence binary catalogue
• Monte Carlo simulations of post-common-envelope white dwarf + main sequence binaries: comparison with the SDSS DR7 observed sample
• Common Envelope Evolution Redux
• The ESO supernovae type Ia progenitor survey (SPY)
• On the Formation of Double White Dwarfs through Stable Mass Transfer and a Common Envelope
• HATS-4b: A Dense Hot-Jupiter Transiting a Super Metal-Rich G Star
• The SDSS spectroscopic catalogue of white dwarf-main sequence binaries: new identifications from DR9-12
• The Galaxy Evolution Explorer (GALEX). Its legacy of UV surveys, and science highlights
• Superflares and Variability in Solar-Type Stars with $TESS$ in the Southern Hemisphere
• Monte Carlo simulations of post-common-envelope white dwarf + main sequence binaries: The effects of including recombination energy
• Rotation Period Evolution in Low-Mass Binary Stars: The Impact of Tidal Torques and Magnetic Braking
• The White Dwarf Binary Pathways Survey I: A sample of FGK stars with white dwarf companions
• Close detached white dwarf + brown dwarf binaries: further evidence for low values of the common envelope efficiency
• WD 1856 b: a close giant planet around a white dwarf that could have survived a common-envelope phase
• Post-common envelope binaries from SDSS - XVI. Long orbital period systems and the energy budget of CE evolution
• Discovery of three self-lensing binaries from Kepler
• A comparison of DA white dwarf temperatures and gravities from FUSE Lyman line and ground-based Balmer line observations
• Triage of Astrometric Binaries - how to find triple systems and dormant black-hole secondaries in the Gaia orbits
• M dwarf companions to white dwarfs I: relating magnetic activity, rotation and age
• The white dwarf binary pathways survey - II. Radial velocities of 1453 FGK stars with white dwarf companions from LAMOST DR4
• The White Dwarf Binary Pathways Survey IV: Three close white dwarf binaries with G-type secondary stars
• Rotation Distributions around the Kraft Break with TESS and Kepler: The Influences of Age, Metallicity, and Binarity
• The White Dwarf Binary Pathways Survey VI: two close post common envelope binaries with TESS light curves
• The first pre-supersoft X-ray binary
• A gap in the double white dwarf separation distribution caused by the common-envelope evolution: astrometric evidence from Gaia
• The White Dwarf Binary Pathways Survey VII: Evidence for a bi-modal distribution of post mass transfer systems?

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• Binary Stars in the New Millennium
• Wide post-common envelope binaries from Gaia: orbit validation and formation models
• Reversing the verdict: Cataclysmic variables could be the dominant progenitors of AM CVn binaries after all
• The White Dwarf Binary Pathways Survey -- IX. Three long period white dwarf plus subgiant binaries
• Formation of long-period post-common-envelope binaries I. No extra energy is needed to explain oxygen-neon white dwarfs paired with AFGK-type main-sequence stars
• Formation of long-period post-common-envelope binaries II. Explaining the self-lensing binary KOI 3278
• The first catalog of candidate white dwarf-main sequence binaries in open star clusters: A new window into common envelope evolution
• Hunting Down White Dwarf--Main Sequence Binaries Using Multi-Wavelength Observations
• White dwarf -- red giant star binaries as Type Ia supernova progenitors: with and without magnetic confinement
• Common envelope evolution and triple dynamics as potential pathways to form the inner white dwarf + brown dwarf binary of the triple star system Gaia 0007-1605
• A post-common-envelope binary with double-peaked Balmer emission lines from TMTS
• From Main Sequence Binary to Blast: MESA Modeling of the Double-Detonation Progenitor PTF1~J2238+7430
• Two unseen massive white dwarf candidates in close binaries
• Direct detections of white dwarfs in four WD+dM post-common envelope binaries within 20 pc