• Revisiting the White Dwarf Luminosity Function from the Palomar-Green Survey 

      Bédard, A.; Bergeron, P.; Fontaine, G. (2018-07)
      We present updated atmospheric parameters for all DA, DB, and DO white dwarfs in the complete sample of the Palomar-Green survey. In particular, we perform a spectroscopic analysis of the DO stars using our new set of ...
    • Temperatures and Chemical Abundances of Accreting White Dwarfs in Cataclysmic Binaries 

      Sion, E.M.; Godon, P. (2018-07)
      We present new results on surface temperatures, and chemical abundances of accreting white dwarfs (WD) in cataclysmic and symbiotic binaries. The S-Type symbiotic system RW Hydrae contains an accreting WD with a surface ...
    • 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 ...
    • 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 ...