A planetesimal orbiting within the debris disc around a white dwarf star

  title={A planetesimal orbiting within the debris disc around a white dwarf star},
  author={Christopher J. Manser and Boris T. G{\"a}nsicke and Siegfried Eggl and Mark Andrew Hollands and Paula Izquierdo and Detlev Koester and John D. Landstreet and Wladimir Lyra and Thomas R. Marsh and Farzana Meru and Alexander J. Mustill and Pablo Rodr{\'i}guez-Gil and Odette Toloza and Dimitri Veras and David J. Wilson and Matthew R. Burleigh and Melvyn B. Davies and Jay Farihi and Nicola Pietro Gentile Fusillo and Domitilla de Martino and Steven G. Parsons and Andreas Quirrenbach and Roberto Raddi and Sabine Reffert and Melania Del Santo and Matthias R. Schreiber and Roberto Silvotti and Silvia Toonen and Eva Villaver and Mark C. Wyatt and Siyi Xu and Simon F. Portegies Zwart},
  pages={66 - 69}
A low-mass planet around a white dwarf Numerous exoplanets have been detected around Sun-like stars. These stars end their lives as white dwarfs, which should inherit any surviving planetary systems. Manser et al. found periodic shifts in emission lines from a disc of gas orbiting around a white dwarf (see the Perspective by Fossati). They used numerical simulations to show that the most likely explanation for the spectral shifts is a low-mass planet orbiting within the disc. The planet must be… 

A giant planet candidate transiting a white dwarf.

These findings for the WD 1856+534 system indicate that giant planets can be scattered into tight orbits without being tidally disrupted, motivating the search for smaller transiting planets around white dwarfs.

A Jovian analogue orbiting a white dwarf star.

The non-detection of a main-sequence lens star in the microlensing event MOA-2010-BLG-477Lb12 using near-infrared observations from the Keck Observatory is reported, which is evidence that planets around white dwarfs can survive the giant and asymptotic giant phases of their host's evolution, and supports the prediction that more than half ofwhite dwarfs have Jovian planetary companions.

A glance into the end of a planetary system

The detection of a small solid body (planetesimal) orbiting a white dwarf with a period of 123.4 min is reported by using ground-based optical spectroscopy and should enable characterization of the very last stages of the evolution of a planetary system as well as the composition of planetary cores.

Short-term stability of particles in the WD J0914+1914 white dwarf planetary system

Nearly all known white dwarf planetary systems contain detectable rocky debris in the stellar photosphere. A glaring exception is the young and still evolving white dwarf WD J0914+1914, which instead

Orbital relaxation and excitation of planets tidally interacting with white dwarfs

Observational evidence of white dwarf planetary systems is dominated by the remains of exo-asteroids through accreted metals, debris discs, and orbiting planetesimals. However, exo-planets in these

Formation of eccentric gas discs from sublimating or partially disrupted asteroids orbiting white dwarfs

Of the 21 known gaseous debris discs around white dwarfs, a large fraction of them display observational features that are well described by an eccentric distribution of gas. In the absence of

High-eccentricity migration of planetesimals around polluted white dwarfs

Several white dwarfs with atmospheric metal pollution have been found to host small planetary bodies (planetesimals) orbiting near the tidal disruption radius. We study the physical properties and

The dynamical history of the evaporating or disrupted ice giant planet around white dwarf WD J0914+1914

  • D. VerasJ. Fuller
  • Physics, Geology
    Monthly Notices of the Royal Astronomical Society
  • 2020
Robust evidence of an ice giant planet shedding its atmosphere around the white dwarf WD J0914+1914 represents a milestone in exoplanetary science, allowing us to finally supplement our knowledge

The search for planet and planetesimal transits of white dwarfs with the Zwicky Transient Facility

  • K. Bell
  • Physics, Geology
    Proceedings of the International Astronomical Union
  • 2019
Abstract Planetary materials orbiting white dwarf stars reveal the ultimate fate of the planets of the Solar System and all known transiting exoplanets. Observed metal pollution and infrared excesses

Planetary Systems Around White Dwarfs

  • D. Veras
  • Physics, Geology
    Oxford Research Encyclopedia of Planetary Science
  • 2021
White dwarf planetary science is a rapidly growing field of research featuring a diverse set of observations and theoretical explorations. Giant planets, minor planets, and debris discs have all been



A disintegrating minor planet transiting a white dwarf

Observations of a white dwarf being transited by at least one, and probably several, disintegrating planetesimals are reported, providing further evidence that the pollution of white dwarfs by heavy elements might originate from disrupted rocky bodies such as asteroids and minor planets.


Infrared studies have revealed debris likely related to planet formation in orbit around ∼30% of youthful, intermediate mass, main-sequence stars. We present evidence, based on atmospheric pollution

A Gaseous Metal Disk Around a White Dwarf

A metal-rich gas disk around a moderately hot and young white dwarf implies that planetary systems may form around high-mass stars.

Survival of a brown dwarf after engulfment by a red giant star

The discovery of a brown dwarf in a short period orbit around a white dwarf is reported and the properties of both stars can be directly observed and show that the brown dwarf was engulfed by a red giant but that this had little effect on it.

The frequency of planetary debris around young white dwarfs

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 planetary body

Formation of planetary debris discs around white dwarfs – I. Tidal disruption of an extremely eccentric asteroid

25–50 per cent of all white dwarfs (WDs) host observable and dynamically active remnant planetary systems based on the presence of close-in circumstellar dust and gas and photospheric metal

Can Planets Survive Stellar Evolution

We study the survival of gas planets around stars with masses in the range 1-5 M☉, as these stars evolve off the main sequence. We show that planets with masses smaller than one Jupiter mass do not

Flows of gas through a protoplanetary gap

Observations of diffuse CO gas inside the gap, with denser HCO+ gas along gap-crossing filaments are reported, which is sufficient to maintain accretion onto the star at the present rate.

Detectable close-in planets around white dwarfs through late unpacking

Although 25%-50% of white dwarfs (WDs) display evidence for remnant planetary systems, their orbital architectures and overall sizes remain unknown. Vibrant close-in (~1 Solar radius) circumstellar

The occurrence of planets and other substellar bodies around white dwarfs using K2

The majority of stars both host planetary systems and evolve into a white dwarf (WD). To understand their post-main-sequence (PMS) planetary system evolution, we present a search for