Hubble Space Telescope ultraviolet spectroscopy of the hottest known helium-rich pre-white dwarf KPD 0005+5106

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Table 4

Abundances in KPD 0005+5106 (β_i) and in the Sun (β_⊙).

Element	log β_i	log β_⊙	log (β_i/β_⊙)	Reference

H	< −1.6	−0.1	< −1.5	(1)
He	−0.01	−0.6	0.6	(1)
C	−2.0	−2.6	0.6	(1)
N	−2.6	−3.2	0.6	(1)
O	−2.4	−2.2	−0.2	(1)
Ne	−2.0	−2.9	0.9	this work
Mg	< −3.2	−3.2	< 0.0	this work
Si	−3.8	−3.2	−0.6	this work
S	−3.1	−3.5	0.4	(1)
Ca	−4.2	−4.2	0.0	(2) and this work^a
Fe	−2.9	−2.9	0.0	(1)

Notes. Abundances by mass fraction. Solar abundances from Asplund et al. (2009).

Reference. (1) Wassermann et al. (2010); (2) Werner et al. (2008).

^(a)

In this work, only an upper limit was determined.

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