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

Journal article

Publication Details

Author(s): Manser CJ, Gansicke BT, Eggl S, Hollands M, Izquierdo P, Koester D, Landstreet JD, Lyra W, Marsh TR, Meru F, Mustill AJ, Rodriguez-Gil P, Toloza O, Veras D, Wilson DJ, Burleigh MR, Davies MB, Farihi J, Fusillo NG, De Martino D, Parsons SG, Quirrenbach A, Raddi R, Reffert S, Del Santo M, Schreiber MR, Silvotti R, Toonen S, Villaver E, Wyatt M, Xu S, Zwart SP
Journal: Science
Publication year: 2019
Volume: 364
Journal issue: 6435
Pages range: 66-69
ISSN: 0036-8075
eISSN: 1095-9203


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.

FAU Authors / FAU Editors

Raddi, Roberto
Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut

External institutions with authors

California Institute of Technology (Caltech)
Christian-Albrechts-Universität zu Kiel
Gemini Observatory North
Instituto de Astrofísica de Canarias (IAC)
Leiden University
Lund University / Lunds universitet
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
Osservatorio Astrofisico di Torino
Ruprecht-Karls-Universität Heidelberg
Universidad Autónoma de Madrid (UAM)
University College London (UCL)
University of Amsterdam
University of Cambridge
University of Leicester
University of Sheffield
University of Valparaíso (UV) / Universidad de Valparaiso
University of Warwick
Western University

How to cite

Manser, C.J., Gansicke, B.T., Eggl, S., Hollands, M., Izquierdo, P., Koester, D.,... Zwart, S.P. (2019). A planetesimal orbiting within the debris disc around a white dwarf star. Science, 364(6435), 66-69. https://dx.doi.org/10.1126/science.aat5330

Manser, Christopher J., et al. "A planetesimal orbiting within the debris disc around a white dwarf star." Science 364.6435 (2019): 66-69.


Last updated on 2019-28-05 at 15:48