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

Bibcode
2019Sci...364...66M
DOI
10.1126/science.aat5330
Manser, C. J.; Gänsicke, Boris T.; Eggl, Siegfried; Hollands, Mark; Izquierdo, P.; Koester, Detlev; Landstreet, John D.; Lyra, Wladimir; Marsh, Thomas R.; Meru, Farzana; Mustill, Alexander J.; Rodríguez-Gil, P.; Toloza, Odette; Veras, Dimitri; Wilson, David J.; Burleigh, Matthew R.; Davies, Melvyn B.; Farihi, Jay; Gentile Fusillo, Nicola; de Martino, Domitilla; Parsons, Steven G.; Quirrenbach, Andreas; Raddi, Roberto; Reffert, Sabine; Del Santo, Melania; Schreiber, Matthias R.; Silvotti, Roberto; Toonen, Silvia; Villaver, Eva; Wyatt, Mark; Xu, Siyi; Portegies Zwart, Simon
Bibliographical reference

Science, Volume 364, Issue 6435, pp. 66-69 (2019).

Advertised on:
4
2019
Journal
Science
Number of authors
32
IAC number of authors
2
Citations
120
Refereed citations
113
Description
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.
Related projects
Representación de la variable cataclísmica SS Cygni (Chris Moran)
Binary Stars
The study of binary stars is essential to stellar astrophysics. A large number of stars form and evolve within binary systems. Therefore, their study is fundamental to understand stellar and galactic evolution. Particularly relevant is that binary systems are still the best source of precise stellar mass and radius measurements. Research lines
Pablo
Rodríguez Gil
In progress
Type
Refereed
Stellar & Interstellar Physics (FEEI)

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