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Pushing the ground-based limit: 14-mumag photometric precision with the definitive Whole Earth Telescope asteroseismic data set for the rapidly oscillating Ap star HR 1217

Kurtz, D W; Cameron, C; Cunha, M S; Dolez, N; Vauclair, G; Pallier, E; Ulla, A; Kepler, S O; da Costa, A; Kanaan, A; Fraga, L; Giovannini, O; Wood, M A; Silvestri, Nicole; Kawaler, S D; Riddle, R L; Reed, M D; Watson, T K; Metcalfe, T S; Mukadam, Anjum; Nather, R E; Winget, D E; Nitta, A; Kleinman, S; Guzik, J A; Bradley, P A; Matthews, J M; Sekiguchi, K; Sullivan, D J; Sullivan, T; Shobbrook, R; Jiang, X; Birch, P V; Ashoka, B N; Seetha, S; Girish, V; Joshi, S; Moskalik, P; Zola, S; O'Donoghue, D; Handler, G; Mueller, M; Gonzalez Perez, J M; Solheim, Jesper; Johannessen, F; Bigot, L


� 2005 RAS HR 1217 is one of the best-studied rapidly oscillating Ap (roAp) stars, with a frequency spectrum of alternating even- and odd-l modes that are distorted by the presence of a strong, global magnetic field. Several recent theoretical studies have found that within the observable atmospheres of roAp stars the pulsation modes are magneto-acoustic with significant frequency perturbations that are cyclic with increasing frequency. To test these theories a Whole Earth Telescope extended...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1111/j.1365-2966.2005.08807.x


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