Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998balta...7..141n&link_type=abstract
Baltic Astronomy, v.7, p.141-148.
Astronomy and Astrophysics
Astronomy
5
Stars: White Dwarfs, Oscillations, Individual: Gd 358
Scientific paper
Using numerical models, we investigate the possibilities of observable effects in the frequency distribution of the normal modes of the pulsating DB-type white dwarfs caused by different evolutionary paths. We find the average period spacing of consecutive radial overtones to be much shorter and the periods of the low k modes to be much longer for DB models resulting from the binary evolution than for those arising from evolution of a single star. Then we compare our models to the GD 358 data and conclude that this star either went through extremely long accretion phase, if it has developed from a binary system, or it is the result of evolution of a single star.
Nitta Atsuko
Winget Don E.
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