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A Circumbinary Debris Disk in a Polluted White Dwarf System
J. Farihi, S. G. Parsons, B. T. Gänsicke
Planetary systems commonly survive the evolution of single stars, as evidenced by terrestrial-like planetesimal debris observed orbiting and polluting the surfaces of white dwarfs.…
Binary star influence on post-main-sequence multi-planet stability
Dimitri Veras, Nikolaos Georgakarakos, Ian Dobbs-Dixon +1
Nearly every star known to host planets will become a white dwarf, and nearly 100 planet-hosts are now known to be accompanied by binary stellar companions. Here, we determine how…
The Fate of Exomoons in White Dwarf Planetary Systems
Matthew J. Payne, Dimitri Veras, Boris T. Gaensicke +1
Roughly 1000 white dwarfs are known to be polluted with planetary material, and the progenitors of this material are typically assumed to be asteroids. The dynamical architectures…
Solar Abundances of Rock Forming Elements, Extreme Oxygen and Hydrogen in a Young Polluted White Dwarf
J. Farihi, D. Koester, B. Zuckerman +5
The Teff = 20,800 K white dwarf WD 1536+520 is shown to have broadly solar abundances of the major rock forming elements O, Mg, Al, Si, Ca, and Fe, together with a strong relative…
High-speed photometry of the disintegrating planetesimals at WD1145+017: evidence for rapid dynamical evolution
B. T. Gaensicke, A. Aungwerojwit, T. R. Marsh +11
We obtained high-speed photometry of the disintegrating planetesimals orbiting the white dwarf WD1145+017, spanning a period of four weeks. The light curves show a dramatic evoluti…