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Astronomy & Astrophysics manuscript no. 9183 c ESO 2008 January 8, 2008
 

Summary: Astronomy & Astrophysics manuscript no. 9183 c ESO 2008
January 8, 2008
LETTER TO THE EDITOR
The discovery of high-amplitude 10.9-minute oscillations
in the cool magnetic Ap star HD 115226
O. Kochukhov1, T. Ryabchikova2,3, S. Bagnulo4, and G. Lo Curto5
1
Department of Astronomy and Space Physics, Uppsala University, SE-751 20, Uppsala, Sweden
2
Institute of Astronomy, Russian Academy of Sciences, Pyatnitskaya 48, 109017 Moscow, Russia
3
Department of Astronomy, University of Vienna, T¨urkenschanzstraße 17, 1180 Vienna, Austria
4
Armagh Observatory, College Hill, Armagh BT61 9DG, Northern Ireland
5
European Southern Observatory, Alonso de Cordova 3107, Vitacura, Santiago, Casilla 19001 Santiago 19, Chile
Received / Accepted
ABSTRACT
We present the discovery of pulsational variations in the cool magnetic Ap star HD 115226 ­ the first high-amplitude rapidly oscillating
Ap star discovered with time-series spectroscopy. Using high-resolution spectra obtained with the HARPS instrument at the ESO 3.6-

  

Source: Armagh Observatory

 

Collections: Physics