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2012MNRAS.424..333G - Mon. Not. R. Astron. Soc., 424, 333-347 (2012/July-3)
The chemical diversity of exo-terrestrial planetary debris around white dwarfs.
GANSICKE B.T., KOESTER D., FARIHI J., GIRVEN J., PARSONS S.G. and BREEDT E.
Abstract (from CDS):
Based on the detection of all major elements of the circumstellar debris, we calculate accretion rates of ≃ 1.7 {x} 108 to ≃ 1.5 {x} 109 g/s. Finally, we detect additional circumstellar absorption in the Si IV 1394, 1403 Å doublet in PG 0843+516 and SDSS 1228+1040, reminiscent to similar high-ionization lines seen in the HST spectra of white dwarfs in cataclysmic variables. We suspect that these lines originate in hot gas close to the white dwarf, well within the sublimation radius.
Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS
Journal keyword(s): stars: individual: PG 0843+516 - stars: individual: PG 1015+161 - stars: individual: SDSS J122859.93+104032.9 - stars: individual: GALEX J193156.8+011745 - planetary systems - white dwarfs
Simbad objects: 13
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