Does GD 356 have a terrestrial planetary companion?

Wickramasinghe, Dayal; Farihi, Jay; Tout, Christopher A; Ferrario, Lilia; Stancliffe, Richard J

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Does GD 356 have a terrestrial planetary companion?

Date

2010

Authors

Wickramasinghe, Dayal

Farihi, Jay

Tout, Christopher A

Ferrario, Lilia

Stancliffe, Richard J

Publisher

Blackwell Publishing Ltd

Abstract

GD 356 is unique among magnetic white dwarfs because it shows Zeeman-split Balmer lines in pure emission. The lines originate from a region of nearly uniform field strength (δB/B≈ 0.1) that covers 10 per cent of the stellar surface in which there is a