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2003ApJ...591L.151R - Astrophys. J., 591, L151-L154 (2003/July-2)
Oscillations in Arcturus from WIRE photometry.
RETTER A., BEDDING T.R., BUZASI D.L., KJELDSEN H. and KISS L.L.
Abstract (from CDS):
Observations of the red giant Arcturus (α Boo) obtained with the star tracker on the Wide Field Infrared Explorer (WIRE) satellite during a baseline of 19 successive days in 2000 July-August are analyzed. The amplitude spectrum has a significant excess of power at low frequencies. The highest peak is at ∼4.1 µHz (2.8 days), which is in agreement with previous ground-based radial velocity studies. The variability of Arcturus can be explained by sound waves, but it is not clear whether these are coherent p-mode oscillations or a single mode with a short lifetime.
Abstract Copyright: ∼
Journal keyword(s): Stars: Individual: Constellation Name: α Bootis - Stars: Oscillations
Errata: erratum vol. 596, p. L125 (2003)
Simbad objects: 2
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