Beschreibung
This book contains the contributed papers and reviews from IAU Colloquium Number 114 on White Dwarfs held at Dartmouth College in August 1988. All the current fields of research in this area are covered including the evolution of white dwarfs, links to progenitors, luminosity functions of white dwarfs, evolution of white dwarfs in binaries, spectroscopy and atmospheric abundances, diffusion, accretion and convective mixing, the mass-radius relation, gravitational redshifts, masses of white dwarfs, and magnetic white dwarfs. Special emphasis has been placed on the intrinsic properties of single white dwarfs. All the articles are by internationally known authorities and contain the most up-to-date information available at the time of writing.
Autorenporträt
InhaltsangabeMass distribution and luminosity function of white dwarfs.- The luminosity function of white dwarfs in the local disk and halo.- Two new late-type degenerates: Implications for the white dwarf luminosity function.- Pre-white dwarf evolution: Up to planetary nebulae.- Evolution of white dwarfs: Starting from planetary nebulae.- On the structure of pre-white dwarfs.- Transport processes and neutrino emission processes in the interior of white dwarfs.- The effect of Coulomb interactions on the helium flash.- Equations of state of hydrogen-helium and carbon-oxygen mixtures.- Gravitational collapse of mass-accreting white dwarfs.- The temperatures of white dwarfs in accreting binaries.- White dwarf evolution in real time: What pulsating white dwarfs teach us about stellar evolution.- The whole earth telescope.- The effects of time dependant convection on white dwarf radial pulsations.- PG 1707+427: The DOV star with the simplest fourier transform.- Observations of cold degenerate stars.- Two new faint common proper motion pairs.- Cluster analysis of the hot subdwarfs in the PG survey.- An unsuccessful search for white dwarf companions to nearby main sequence stars.- The Bologna/ESO search for double degenerates.- Far ultraviolet observations of hot DA white dwarfs.- Far-ultraviolet spectrophotometry of two do white dwarfs from Voyager.- A spectrophotometric atlas of white dwarfs compiled from the me archives.- Scaleheights of low mass stars from the luminosity function of the local white dwarfs.- ROSAT - an all-sky X-ray and EUV survey of white dwarfs.- Results of a spectrophotometric survey of white dwarf suspects in the solar neighbourhood.- Three double degenerate candidates.- The ccd/transit instrument (CTI) blue objectsurvey.- Low mass hydrogen envelopes and the DB gap.- Diffusion and metal abundances in hot white dwarfs.- Helium abundance in the photospheres of hot DA white dwarfs.- Non-LTE spectral analysis of PG 1159-035.- X-ray emission from hot DA white dwarfs; EXOSAT results, and implications for atmospheric models.- The effect of CNO metal abundances on the soft X-ray emission from HE rich white dwarfs.- Chemical stratification in white dwarf atmospheres and envelopes.- Origin of the DA and non-DA white dwarf stars.- Model atmospheres for very cool hydrogen-rich white dwarfs.- An ultraviolet look at the blue edge of the ZZ ceti instability strip.- Spectroscopic studies and atmospheric parameters OF ZZ Ceti stars.- Finite element analysis of diffusion processes in white dwarfs.- Heavy element abundances predicted by radiative support theory in the atmospheres of hot white dwarfs.- Second-order effects due to rotation in pulsating DR white dwarfs.- Are pulsatiohs a useful probe of the structure of the outer layers of white dwarfs ?.- Cooling of white dwarfs with account of non-equilibrium beta-processes.- Thermonuclear explosion in binaries: White dwarf helium star.- The phase diagram of high density binary mixtures and the luminosity function of single white dwarfs.- A variational approach to understanding white dwarf evolution.- The effect of varying helium and hydrogen layer masses on the pulsation properties of white dwarf models.- Discovery of the sixth dbv star: CBS 114.- Optical frequencies in V471 Tau.- The time dependence of the phases of the harmonics relative to the 1490 sec fundamental in PG1346+082.- A new hydrogen equation of state for low mass stars.- Magnetic fields in white dwarfs.- The magnetic white dwarfs in AM Her variables.- Evidence of complex field structure in the magnetic white dwarf in EXO 033319-2554.2.- Phase correlated spectra of magnetic white dwarfs.- Synthetic spectra of magnetic white dwarfs.- Masses and magnetic fields of white dwarfs in cataclysmic variables.- G117-1115A: how is it evolving?.- Pressure shifts of metal lines in cool white dwarfs.- A new temperature determination for sirius B from IUE: Implications for the observed soft X-ray fluxes.- The detection of ionized helium and c
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