Abstract The Laser Interferometer Space Antenna (LISA) will be a transformative experiment
for gravitational wave astronomy, and, as such, it will offer unique opportunities to address …

Circumstellar disks of planetary debris are now known or suspected to closely orbit
hundreds of white dwarf stars. To date, both data and theory support disks that are entirely …

Context. Heavy metals in the atmospheres of white dwarfs are thought in many cases to be
accreted from a circumstellar debris disk, which was formed by the tidal disruption of a rocky …

The fates of planetary systems provide unassailable insights into their formation and
represent rich cross-disciplinary dynamical laboratories. Mounting observations of post-main …

Most stars become white dwarfs after they have exhausted their nuclear fuel (the Sun will be
one such). Between one-quarter and one-half of white dwarfs have elements heavier than …

Astrophysicists are increasingly taking into account the effects of orbiting companions on
stellar evolution. New discoveries have underlined the role of binary star interactions in a …

Many white dwarf stars show signs of having accreted smaller bodies, implying that they
may host planetary systems. A small number of these systems contain gaseous debris discs …

Evidence is now compelling that elements heavier than helium in many white dwarf
atmospheres have accumulated by accretion from orbiting rocky bodies, often larger than …

The science fiction writer Douglas Adams imagined the greatest computer ever built, Deep
Thought, programmed to answer the deepest question ever asked: the Great Question of …

We present an analysis of 1023 DBZ/DZ (A) and 319 DQ white dwarf stars taken from the
Montreal White Dwarf Database. This represents a significant increase over the previous …