The cooling of CO white dwarfs: influence of the internal chemical distribution

Abstract

In this paper we compute detailed evolutionary models providing chemical profiles for white dwarfs having progenitors in the mass range from 1.0 to $7 M_{\sun}$ and we examine the influence of such profiles in the cooling process. The influence of the process of separation of carbon and oxygen during crystallization is decreased as a consequence of the initial stratification, but it is still important and cannot be neglected. As an example, the best fit to the luminosity functions of Liebert et al. (1988) and Oswalt et al. (1996) gives and age of the disk of 9.3 and 11.0 Gyr, respectively, when this effect is taken into account, and only 8.3 and 10.0 Gyrs when it is neglected.

Accepted for publication in ApJ (26 pages, 7 figures, aasms4)

Cited by in corpus (115)

• Evolutionary and pulsational properties of white dwarf stars
• Sub-luminous type Ia supernovae from the mergers of equal-mass white dwarfs with M~0.9 M_sun
• Detonations in Sub-Chandrasekhar Mass C+O White Dwarfs
• Pulsating White Dwarf Stars and Precision Asteroseismology
• Super and massive AGB stars - IV. Final fates - Initial to final mass relation
• New cooling sequences for old white dwarfs
• Tidal disruption and ignition of white dwarfs by moderately massive black holes
• Constraints from gravitational wave detections of binary black hole mergers on the ${}^{12}\mathrm{C}{\left(\alpha ,\gamma \right)}^{16}\mathrm{O}$ rate
• The Imprint of Nova Nucleosynthesis in Presolar Grains
• A Dusty Disk Around GD 362, a White Dwarf With a Uniquely High Photospheric Metal Abundance
• Axions and the cooling of white dwarf stars
• Cooling Models for Old White Dwarfs
• Super-AGB Stars and their role as Electron Capture Supernova progenitors
• Intermediate-mass star models with different helium and metal contents
• Evolution of 3-9 Mo Stars for Z=0.001 - 0.03 and Metallicity Effects on Type Ia Supernovae
• The chemical composition of White Dwarfs as a test of convective efficiency during core He-burning
• Semi-empirical white dwarf initial-final mass relationships: a thorough analysis of systematic uncertainties due to stellar evolution models
• Toward ensemble asteroseismology of ZZ Ceti stars with fully evolutionary models
• A large stellar evolution database for population synthesis studies: VI. White dwarf cooling sequences
• The ages of very cool hydrogen-rich white dwarfs
• The 12C(alpha,gamma)16O Reaction Rate and the Evolution of Stars in the Mass Range 0.8 < M/M(sun) < 25
• Testing White Dwarf Crystallization Theory with Asteroseismology of the Massive Pulsating DA Star BPM 37093
• The Dark Universe
• Reaching the End of the White Dwarf Cooling Sequence in NGC 6791
• Nuclear-dominated accretion and subluminous supernovae from the merger of a white dwarf with a neutron star or black hole
• Astromaterial Science and Nuclear Pasta
• The age and colors of massive white dwarf stars
• Cooling sequences and color-magnitude diagrams for cool white dwarfs with hydrogen-atmospheres
• Measurements of Physical Parameters of White Dwarfs: A Test of the Mass-Radius Relation
• Crystallization of Carbon Oxygen Mixtures in White Dwarf Stars
• An Initial Survey of White Dwarfs in the Sloan Digital Sky Survey
• Carbon-Oxygen White Dwarfs Accreting CO-Rich Matter I: A Comparison Between Rotating and Non-Rotating Models
• Measuring ^{12}C(&alpha,&gamma)^{16}O from White Dwarf Asteroseismology
• New chemical profiles for the asteroseismology of ZZ Ceti stars
• The Physics of Crystallization from Globular Cluster White Dwarf Stars in NGC 6397
• Is Galactic Dark Matter White ?
• The energetics of crystallizing white dwarfs revisited again
• The core/envelope symmetry in pulsating stars
• A new white dwarf constraint on the rate of change of the gravitational constant
• On the helium flash in low-mass Population III Red Giant stars
• Evolutionary calculations of phase separation in crystallizing white dwarf stars
• Calibration of White Dwarf cooling sequences: theoretical uncertainty
• Seismological studies of ZZ Ceti stars. I. The model grid and the application to individual stars
• Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models
• Evolution of white dwarf stars with high-metallicity progenitors: the role of 22Ne diffusion
• Fe emission and ionized excess absorption in the luminous quasar 3C109 with XMM-Newton
• Preliminary Constraints on 12C(alpha,gamma)16O from White Dwarf Seismology
• The halo white dwarf population
• The updated BaSTI stellar evolution models and isochrones. III. White Dwarfs
• Isochrones and Luminosity Functions for Old White Dwarfs
• The age-metallicity dependence for white dwarfs
• Diffusion of Neon in White Dwarf Stars
• He-detonation in sub-Chandrasekhar CO white dwarfs: a new insight into energetics and p-process nucleosynthesis
• Axions and the white dwarf luminosity function
• Genetic-Algorithm-based Asteroseismological Analysis of the DBV White Dwarf GD 358
• Properties of Carbon-Oxygen White Dwarfs From Monte Carlo Stellar Models
• Strong limits on the DFSZ axion mass with G117-B15A
• KIC 4552982: Outbursts and Asteroseismology from the Longest Pseudo-Continuous Light Curve of a ZZ Ceti
• Fine Grid Asteroseismology of R548 and G117-B15A
• New phase diagrams for dense carbon-oxygen mixtures and white dwarf evolution
• The White Dwarf Cooling Age of the Open Cluster NGC 2420
• The Age of the Universe
• Evolutionary sequences for hydrogen-deficient white dwarfs
• The white dwarf luminosity function
• Asteroseismology of ZZ Ceti stars with fully evolutionary white dwarf models: I. The impact of the uncertainties from prior evolution on the period spectrum
• The explosion of supernova 2011fe in the frame of the core-degenerate scenario
• Buoyant crystals halt the cooling of white dwarf stars
• Axion Astrophysics
• Asymptotic Giant Branch predictions: theoretical uncertainties
• New evolutionary models for massive ZZ Ceti stars. II. The effects of crystallization on their pulsational properties
• Pulsations of massive ZZ Ceti stars with carbon/oxygen and oxygen/neon cores
• The Age and Stellar Parameters of the Procyon Binary System
• The white dwarf mass-radius relation and its dependence on the hydrogen envelope
• Pulsation properties of ultra-massive DA white dwarf stars with ONe cores
• Simulating Gaia performances on white dwarfs
• The white dwarf population of NGC 6397
• White dwarfs as Physics laboratories: lights and shadows
• Nonlinear dynamical tides in white dwarf binaries
• Evolution of a 3 \msun star from the main sequence to the ZZ Ceti stage: the role played by element diffusion
• A deeper understanding of white dwarf interiors
• On the recent parametric determination of an asteroseismological model for the DBV star KIC 08626021
• White Dwarf cooling Sequences, II: luminosity functions
• Probing the core and envelope structure of DBV white dwarfs
• Heat transport and convective velocities in compositionally-driven convection in neutron star and white dwarf interiors
• Asteroseismology of the Kepler field DBV White Dwarf - It's a hot one!
• Carbon burning in intermediate mass primordial stars
• Asteroseismic constraints on diffusion in WD envelopes
• GD358: three decades of observations for the in-depth asteroseismology of a DBV star
• White dwarf cooling and large extra dimensions
• Probing the structure of Kepler ZZ Ceti stars with full evolutionary models-based asteroseismology
• Time dependent diffusion in pulsating white dwarf stars: Asteroseismology of G117-B15A
• The double-layered chemical structure in DB white dwarfs
• Toward High Precision Seismic Studies of White Dwarf Stars: Parametrization of the Core and Tests of Accuracy
• New DA white dwarf evolutionary models and their pulsational properties
• Magnetic field breakout from white dwarf crystallization dynamos
• An Empirical Measure of the Rate of White Dwarf Cooling in 47 Tucanae
• Asteroseismology of ZZ Ceti stars with full evolutionary white dwarf models. II. The impact of AGB thermal pulses on the asteroseismic inferences of ZZ Ceti stars
• The rate of period change in pulsating DB white dwarf stars
• The Effects of Element Diffusion on the Pulsational Properties of Variable DA White Dwarf Stars
• On the White Dwarf distances to Galactic Globular Clusters
• Evolution of iron core white dwarfs
• The role of dredge-up in double white dwarf mergers
• Multimode pulsation of the ZZ Ceti star GD 154
• Characterizing the pulsations of the ZZ Ceti star KUV 02464+3239
• Discovery of a pre-cataclysmic binary with unusual chromaticity of the eclipsed white dwarf by the GPX Survey
• White dwarf cooling sequences and cosmochronology
• Direct MD simulation of liquid-solid phase equilibria for two-component plasmas
• Searching for new white dwarf pulsators for TESS observations at Konkoly Observatory
• On mode trapping in pulsating DA white dwarf stars
• DQ white-dwarf stars with low C abundance: Possible progenitors
• Seismological Studies of Pulsating DA White Dwarfs Observed with the Kepler Space Telescope and K2 Campaigns 1-8
• MagAO Imaging of Long-period Objects (MILO). II. A Puzzling White Dwarf around the Sun-like Star HD 11112
• Tidally-induced thermonuclear Supernovae
• Seismic test of the mass-radius relationship of hydrogen-atmospheric white dwarf stars
• Slow convection and fast rotation in crystallization-driven white dwarf dynamos