A planetesimal orbiting within the debris disc around a white dwarf star
Earth and Planetary Astrophysics
2019-04-05 v1 Solar and Stellar Astrophysics
Abstract
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 123.4min periodic variation in the strength and shape of the CaII emission line profiles originating from the debris disc around the white dwarf SDSSJ122859.93+104032.9. We interpret this short-period signal as the signature of a solid body held together by its internal strength.
Cite
@article{arxiv.1904.02163,
title = {A planetesimal orbiting within the debris disc around a white dwarf star},
author = {Christopher J. Manser and Boris T. Gänsicke and Siegfried Eggl and Mark 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 Rodríguez-Gil and Odette Toloza and Dimitri Veras and David J. Wilson and Matthew R. Burleigh and Melvyn B. Davies and Jay Farihi and Nicola 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 Wyatt and Siyi Xu and Simon Portegies Zwart},
journal= {arXiv preprint arXiv:1904.02163},
year = {2019}
}
Comments
11 Figures, 3 Tables