HD 48977 frequency analysis
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Date
Authors
Thoul, A.
Degroote, P.
Catala, C.
Aerts, C.C. Conny
Morel, T.
Briquet, M.
Hillen, M.
Raskin, G.
Winckel, H. van
Auvergne, M.
Journal Title
Journal ISSN
Volume Title
Publisher
ViZieR
Abstract
We present the CoRoT light curve of the bright B2.5V star HD 48977 observed during a short run of the mission in 2008, as well as a high-resolution spectrum gathered with the HERMES spectrograph at the Mercator telescope. We use several time series analysis tools to explore the nature of the variations in the light curve. We performed a detailed analysis of the spectrum of the star to determine its fundamental parameters and its element abundances. We find a large number of high-order g-modes, and one rotationally induced frequency. We find stable low-amplitude frequencies in the p-mode regime as well.