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THE DISCOVERY OF STRONG NEUTRAL ATOMIC CARBON ABSORPTION-LINES IN THE SPECTRUM OF THE DAQZ5 WHITE-DWARF IN THE ULTRA SHORT-PERIOD DWARF NOVA WZ SAGITTAE DURING QUIESCENCE
被引：18
|作者：
SION, EM
LECKENBY, HJ
SZKODY, P
机构：
[1] UNIV WASHINGTON,DEPT ASTRON,SEATTLE,WA 98165
[2] CNRS,OBSERV MIDI PYRENEES,F-31055 TOULOUSE,FRANCE
来源：
关键词：
Stars: accretion;
Stars: dwarf novae;
Stars: white dwarfs;
Ultraviolet: spectra;
D O I：
10.1086/185870
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report the identification of strong neutral carbon absorption features in the photosphere of the white dwarf exposed during the quiescent state of the ultra-short-period dwarf nova WZ Sagittae. On the basis of its carbon in a hydrogen-dominated photosphere with Si II also present, we assign the white dwarf in WZ Sge the spectroscopic classification DAQZ5, compare its line spectrum with other (single) white dwarfs containing photospheric carbon, and briefly discuss the possible implications of our line identifications for accretion physics, convective dredge-up, mixing, and dilution and diffusion theory.
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页码：L41 / L44
页数：4
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