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Amplitude and Frequency Variability of the Pulsating DB White Dwarf Stars KUV 05134+2605 and PG 1654+160 Observed with the Whole Earth Telescope

Handler, G; O'Donoghue, D; Muller, M; Solheim, Jesper; Gonzalez-Perez, J; Johannessen, F; Paparo, M; Szeidl, B; Viraghalmy, G; Silvotti, R; Vauclair, G; Dolez, N; Pallier, E; Chevreton, M; Kurtz, D W; Bromage, G.; Cunha, M S; Ostensen, R; Fraga, L; Kanaan, A; Amorim, A.; Giovannini, O; Kepler, S O; da Costa, A; Anderson, R.; Wood, M A; Silvestri, Nicole; Klumpe, E W; Carlton, R.; Miller, R; McFarland, J; Grauer, A.; Kawaler, S D; Riddle, R L; Reed, M D; Nather, R E; Winget, D E; Hill, J.; Metcalfe, T S; Mukadam, Anjum; Kilic, M; Watson, T K; Kleinman, S; Nitta, A; Guzik, J A; Bradley, P A; Sekiguchi, K; Sullivan, D J; Sullivan, T; Shobbrook, R; Jiang, X; Birch, P V; Ashoka, B N; Seetha, S; Girish, V; Joshi, S; Dorokhova, T.; Dorokhov, N.; Akan, M.; Meistas, E; Janulis, R; Kalytis, R; Alisauskas, D; Anguma, S.; Kalebwe, P C; Moskalik, P; Ogloza, W; Stachowski, G; Pajdosz, G; Zola, S

Description

We have acquired new time series photometry of the two pulsating DB white dwarf stars KUV 05134+2605 and PG1654+160 with the Whole Earth Telescope. Additional single-site photometry is also presented. We use all these data plus all available archival measurements to study the temporal behaviour of the pulsational amplitudes and frequencies of these stars for the first time. We demonstrate that both KUV 05134+2605 and PG 1654+160 pulsate in many modes, the amplitudes of which are variable in...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
URI: http://hdl.handle.net/1885/86704
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1046/j.1365-8711.2003.06373.x

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