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| Paper: |
KPD0005+5106: Hottest DO White Dwarf Much Hotter Than Assumed |
| Volume: |
391, Hydrogen-Deficient Stars |
| Page: |
239 |
| Authors: |
Werner, K.; Rauch, T.; Kruk, J.W. |
| Abstract: |
KPD0005+5106 is the hottest known helium-rich white dwarf. We have identified Ne VIII lines in UV and optical spectra and conclude that it is significantly hotter than previously thought, namely Teff = 200 000 K instead of 120 000 K. This is a possible explanation for the observed hard X-ray emission as being of photospheric origin. Concerning its evolutionary state, we suggest that KPD0005+5106 is not a descendant of a PG1159 star but more probably related to the O(He) stars and RCrB stars. |
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