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1994A&A...291L...9K - Astronomy and Astrophysics, volume 291, L9-12 (1994/11-1)
FOS observations of G117-B15A and the blue edge of the ZZ Ceti instability strip.
KOESTER D., ALLARD N.F. and VAUCLAIR G.
Abstract (from CDS):
From an analysis of FOS observations of G117-B15A, one of the hottest members of the ZZ Ceti class, we derive an effective temperature of 12250±125K. Since several other DA near the blue edge of the instability strip must have very similar temperatures according to their UV spectra, it is likely that the blue edge is lower than assumed until now. The spectrum can only be fitted, if we assume a relatively high convective efficiency, corresponding to a mixing-length parameter of about 2.
Abstract Copyright: ∼
Journal keyword(s): stars: oscillations - stars: white dwarfs - stars: individual: G117-B15A
Simbad objects: 5
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