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

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 MartinoSteven 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

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

88 Citeringar (SciVal)

Sammanfattning

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.
Originalspråkengelska
Sidor (från-till)66-69
Antal sidor4
TidskriftScience
Volym364
Utgåva6435
DOI
StatusPublished - 2019 apr. 1

Ämnesklassifikation (UKÄ)

  • Astronomi, astrofysik och kosmologi

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