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Alexander Mustill. Profile picture.

Alexander Mustill

Researcher

Alexander Mustill. Profile picture.

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

Author

  • Christopher J. Manser
  • Boris T. Gänsicke
  • Siegfried Eggl
  • Mark Hollands
  • Paula Izquierdo
  • Detlev Koester
  • John D. Landstreet
  • Wladimir Lyra
  • Thomas R. Marsh
  • Farzana Meru
  • Alexander J. Mustill
  • Pablo Rodriguez-Gil
  • Odette Toloza
  • Dimitri Veras
  • David J. Wilson
  • Matthew R. Burleigh
  • Melvyn B. Davies
  • Jay Farihi
  • Nicola Gentile Fusillo
  • Domitilla de Martino
  • Steven G. Parsons
  • Andreas Quirrenbach
  • Roberto Raddi
  • Sabine Reffert
  • Melania Del Santo
  • Matthias R. Schreiber
  • Roberto Silvotti
  • Silvia Toonen
  • Eva Villaver
  • Mark Wyatt
  • Siyi Xu
  • Simon Portegies Zwart

Summary, in English

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, visible through emission lines. We report a stable 123.4-minute periodic variation in the strength and shape of the Ca II emission line profiles originating from the debris disc around the white dwarf SDSS J122859.93+104032.9. We interpret this short-period signal as the signature of a solid-body planetesimal held together by its internal strength.

Department/s

  • Lund Observatory
  • eSSENCE: The e-Science Collaboration

Publishing year

2019-04-01

Language

English

Pages

66-69

Publication/Series

Science

Volume

364

Issue

6435

Document type

Journal article

Publisher

American Association for the Advancement of Science (AAAS)

Topic

  • Astronomy, Astrophysics and Cosmology

Keywords

  • Astronomy
  • Planetary Sciences
  • Astrophysics - Earth and Planetary Astrophysics
  • Astrophysics - Solar and Stellar Astrophysics

Status

Published

Project

  • A unified picture of white dwarf planetary systems
  • IMPACT: Comets, asteroids and the habitability of planets

ISBN/ISSN/Other

  • ISSN: 1095-9203