Title: Solar-like oscillations in the K1 dwarf star alpha Cen B
Authors: Carrier, Fabien ×
Bourban, G #
Issue Date: Jul-2003
Publisher: E d p sciences
Series Title: Astronomy & astrophysics vol:406 issue:1 pages:L23-L26
Abstract: The K1 dwarf alpha Cen B was observed with the CORALIE spectrograph on the 1.2-m Swiss telescope at La Silla in April 2003. Thirteen nights of observations have made it possible to collect 3626 radial velocity measurements with a standard deviation of 1.4 m s(-1) exhibiting a mean noise level in the amplitude spectrum of only 3.75 cm s(-1). Twelve oscillation modes have been identified in the power spectrum between 3 and 4.6 mHz with amplitudes in the range 8.7 to 13.7 cm s(-1) and showing a regularity with a large separation of 161.1 muHz. A preliminary discussion on the physical parameters of the alpha Cen binary system is presented.
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

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