GD 424 – a helium-atmosphere white dwarf with a large amount of trace hydrogen in the process of digesting a rocky planetesimal

ABSTRACT The photospheric metal pollution of white dwarfs is now well established as the signature of the accretion of planetary debris. However, the origin of the trace hydrogen detected in many white dwarfs with helium atmospheres is still debated. Here, we report the analysis of GD 424: a metal-p...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2021-03, Vol.501 (3), p.4276-4288
Main Authors: Izquierdo, Paula, Toloza, Odette, Gänsicke, Boris T, Rodríguez-Gil, Pablo, Farihi, Jay, Koester, Detlev, Guo, Jincheng, Redfield, Seth
Format: Article
Language:English
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