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 …

The most direct and substantial way to measure the geochemistry of extrasolar objects is to
perform chemical autopsies on their broken-up remains. However, traditional ways of …

Astronomers have discovered thousands of planets outside the Solar System, most of which
orbit stars that will eventually evolve into red giants and then into white dwarfs. During the …

Studies, have shown that the remnants of destroyed planets and debris-disk planetesimals
can survive the volatile evolution of their host stars into white dwarfs,, but few intact planetary …

Oxygen fugacity is a measure of rock oxidation that influences planetary structure and
evolution. Most rocky bodies in the Solar System formed at oxygen fugacities approximately …

The photospheres of some white dwarfs (WDs) are" polluted" by accretion of material from
their surrounding planetary debris. WDs with dust disks are often heavily polluted and high …

We present a spectroscopic survey of 230 white dwarf candidates within 40 pc of the Sun
from the William Herschel Telescope and Gran Telescopio Canarias. All candidates were …

Polluted white dwarfs serve as astrophysical mass spectrometers–their photospheric
abundances are used to infer the composition of planetary objects that accrete onto them …

ABSTRACT A total of 1–3 per cent of white dwarfs are orbited by planetary dusty debris
detectable as infrared emission in excess above the white dwarf flux. In a rare subset of …

ABSTRACT A significant fraction of white dwarfs show metal lines indicative of pollution with
planetary material but the accretion process remains poorly understood. The main aim of …