Testing the white dwarf mass-radius relationship with eclipsing binaries

Abstract

We present high precision, model independent, mass and radius measurements for 16 white dwarfs in detached eclipsing binaries and combine these with previously published data to test the theoretical white dwarf mass-radius relationship. We reach a mean precision of 2.4 per cent in mass and 2.7 per cent in radius, with our best measurements reaching a precision of 0.3 per cent in mass and 0.5 per cent in radius. We find excellent agreement between the measured and predicted radii across a wide range of masses and temperatures. We also find the radii of all white dwarfs with masses less than 0.48M${}_{\odot }$ to be fully consistent with helium core models, but they are on average 9 per cent larger than those of carbon-oxygen core models. In contrast, white dwarfs with masses larger than 0.52M${}_{\odot }$ all have radii consistent with carbon-oxygen core models. Moreover, we find that all but one of the white dwarfs in our sample have radii consistent with possessing thick surface hydrogen envelopes ($10^{-5}\ge M_{\mathrm{H}}/M_{\mathrm{WD}}\ge 10^{-4}$), implying that the surface hydrogen layers of these white dwarfs are not obviously affected by common envelope evolution.

Accepted for publication in MNRAS

References in corpus (52)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Accurate masses and radii of normal stars: modern results and applications
• First Results from the Catalina Real-time Transient Survey
• X-shooter, the new wide band intermediate resolution spectrograph at the ESO Very Large Telescope
• The Catalina Surveys Periodic Variable Star Catalog
• Photometric and Spectroscopic Analysis of Cool White Dwarfs with Trigonometric Parallax Measurements
• ULTRACAM: an ultra-fast, triple-beam CCD camera for high-speed astrophysics
• White Dwarf Mass Distribution in the SDSS
• Hubble Space Telescope Astrometry of the Procyon System
• The initial-final mass relationship of white dwarfs revisited: effect on the luminosity function and mass distribution
• A Catalog of Spectroscopically Identified White Dwarf Stars in the First Data Release of the Sloan Digital Sky Survey
• Spectroscopic analysis of DA white dwarfs with 3D model atmospheres
• Detached white dwarf main-sequence star binaries
• Low and intermediate-mass close binary evolution and the initial - final mass relation
• Beaming Binaries - a New Observational Category of Photometric Binary Stars
• Post Common Envelope Binaries from SDSS. I: 101 white dwarf main sequence binaries with multiple SDSS spectroscopy
• Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models
• On the evolutionary status of short period cataclysmic variables
• Physical properties of IP Pegasi: an eclipsing dwarf nova with an unusually cool white dwarf
• Precise mass and radius values for the white dwarf and low mass M dwarf in the pre-cataclysmic binary NN Serpentis
• Hubble Space Telescope Spectroscopy of V471 Tauri: Oversized K Star, Paradoxical White Dwarf
• Grids of white dwarf evolutionary models with masses from M= 0.1 to 1.2 Ms
• Hubble Space Telescope Spectroscopy of the Balmer lines in Sirius B
• Post-common envelope binaries from SDSS - XIV. The DR7 white dwarf-main sequence binary catalogue
• Post-common envelope binaries from SDSS-X: The origin of low-mass white dwarfs
• The Solar Neighborhood. XXI. Parallax Results from the CTIOPI 0.9m Program: 20 New Members of the 25 Parsec White Dwarf Sample
• Cataclysmic Variables below the Period Gap: Mass Determinations of 14 Eclipsing Systems
• New chemical profiles for the asteroseismology of ZZ Ceti stars
• ULTRASPEC: a high-speed imaging photometer on the 2.4-m Thai National Telescope
• The Discovery of a Short Period Double-Degenerate Binary Star
• The SDSS spectroscopic catalogue of white dwarf-main sequence binaries: new identifications from DR9-12
• Post Common Envelope Binaries from SDSS. V: Four eclipsing white dwarf main sequence binaries
• New Insights into the Problem of the Surface Gravity Distribution of Cool DA White Dwarfs
• Eclipsing Post Common Envelope Binaries from the Catalina Surveys
• The Gaia DR1 Mass-Radius Relation for White Dwarfs
• Post Common Envelope Binaries from SDSS. XV: Accurate stellar parameters for a cool 0.4-solar mass white dwarf and a 0.16-solar mass M-dwarf in a 3 hour eclipsing binary
• A precision study of two eclipsing white dwarf plus M dwarf binaries
• Limb-Darkening Coefficients for Eclipsing White Dwarfs
• The mass and radius of the M-dwarf in the short period eclipsing binary RR Caeli
• Precise parameters for both white dwarfs in the eclipsing binary CSS 41177
• Observational Constraints on the Degenerate Mass-Radius Relation
• The shortest period detached white dwarf + main-sequence binary
• An accurate mass and radius measurement for an ultracool white dwarf
• Fourteen new eclipsing white dwarf plus main-sequence binaries from the SDSS and Catalina surveys
• Very low mass white dwarfs with a C-O core
• Hunting For Eclipses: High Speed Observations of Cataclysmic Variables
• The crowded magnetosphere of the post common envelope binary QS Virginis
• Discovery of eclipsing white dwarf systems in a search for Earth-size companions
• Multiple emission line components in detached post-common-envelope binaries
• A large, long-lived structure near the trojan L5 point in the post common-envelope binary SDSS J1021+1744
• Accretion and activity on the post-common-envelope binary RR~Cae

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