• Magnetic Torques Imply Fewer Double Detonations 

      Neunteufel, P.; Yoon, S.C.; Langer, N. (2018-07)
      Binary systems composed of one helium-rich nondegenerate star and one carbon-oxygen white dwarf (He+CO) have long been considered a promising progenitor candidate for a number of astrophysical transients like archetypical ...
    • White dwarf collisions and the meteoritic Ne-E anomaly 

      Isern, J.; Bravo, E. (2018-07)
      The analysis of noble gases in primitive meteorites has shown the existence of anomalous isotopic abundances when compared with the average Solar System values. In particular it has been found that some graphite grains ...
    • The gravitational redshift of Sirius B 

      Joyce, S.R.G.; Barstow, M.A.; Holberg, J.B.; Bond, H.E.; Casewell, S.L.; Burleigh, M.R. (2018-07)
      Previous measurements of the gravitational redshift of Sirius B have resulted in a mass estimate which is significantly larger than the mass measured from the binary orbit. We have obtained new HST observations of ...
    • An Update on Pulsations in Accreting White Dwarfs 

      Szkody, Paula; Mukadam, Anjum (2018-07)
      Since the last white dwarf workshop, there is continuing evidence that long (hrs to days) periodicities are being found in white dwarfs that are undergoing accretion in close binary systems. Pulsation modes remain a ...
    • Mg line profiles for cool WD and their application in the UV 

      Gadéa, F.X.; Leininger, T.; Guillon, G.; Allard, N.F.; Blouin, S.; Dufour, P. (2018-07)
      Since last decade there have been great advances and extremely exciting results in the search and interpretation for cool DZ white dwarfs. In the formation of their spectra, the far wings of alkaline earth metals like ...
    • The Gaia white dwarf population within 100 pc of the Sun 

      Torres, S.; Rebassa-Mansergas, A.; Jiménez-Esteban, F.M.; Cantero, C.; Canals, P.; Skorobogatov, G.; Solano, E. (2018-07)
      The recent Gaia Data Release 2 has provided an unprecedented sample of the local white dwarf population. The high astrometric resolution and the photometry provided by Gaia allows to build a clean magnitude-color diagram ...
    • Numerical simulations of the convective dilution process in helium-rich white dwarfs 

      Rolland, B.; Bergeron, P.; Fontaine, G. (2018-07)
      DB and DBA white dwarfs are generally believed to be the result of a process by which a thin radiative hydrogen atmosphere floating in diffusive equilibrium on top of a helium envelope is eventually completely diluted ...