Constraining the Evolution of ZZ Ceti

Mukadam, Anjum; Kepler, S O; Winget, D E; Nather, R E; Kilic, M; Mullally, F; von Hippel, Ted; Kleinman, S; Nitta, A; Guzik, J A; Bradley, P A; Matthews, J M; Sekiguchi, K; Sullivan, D J; Sullivan, T; Shobbrook, R; Birch, P V; Jiang, X; Xu, D W; Joshi, S; Ashoka, B N; Ibbetson, P; Leibowitz, E; Ofek, Eran O; Meistas, E; Janulis, R; Alisauskas, D; Kalytis, R; Handler, G; Kilkenny, D; O'Donoghue, D; Kurtz, D W; Muller, M; Moskalik, P; Ogloza, W; Zola, S; Krzesinski, J; Johannessen, F; Gonzalez-Perez, J; Solheim, Jesper; Silvotti, R; Bernabei, S; Vauclair, G; Dolez, N; Fu, J; Chevreton, M; Mantiega, M; Suarez, O; Ulla, A; Cunha, M S; Metcalfe, T S; Kanaan, A; Fraga, L; Costa, A F M; Giovannini, O; Fontaine, G; Bergeron, P; O'Brien, M S; Sanwal, D; Wood, M A; Ahrens, T J; Silvestri, Nicole; Klumpe, E W; Kawaler, S D; Riddle, R L; Reed, M D; Watson, T K

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Constraining the Evolution of ZZ Ceti

Date

2003

Authors

Mukadam, Anjum

Kepler, S O

Winget, D E

Nather, R E

Kilic, M

Mullally, F

von Hippel, Ted

Kleinman, S

Nitta, A

Guzik, J A

Publisher

IOP Publishing

Abstract

We report our analysis of the stability of pulsation periods in the DAV star (pulsating hydrogen atmosphere white dwarf) ZZ Ceti, also called R548. On the basis of observations that span 31 years, we conclude that the period 213. 13 s observed in ZZ Ceti